研究者詳細 - 廣澤　渉一

AA2618 aluminum alloy is well-known as an age-hardenable aluminum alloy with higher strength at elevated temperatures. In this study, the effect of dynamic precipitation on creep properties of AA2618 forged aluminum alloy was investigated by creep test, tensile test, transmission electron microscopy and differential scanning calorimetry. The differently aged three samples with varied yield stress: i.e. short-, middle- and long-aged samples, were prepared and then crept at 180°C under applied stress of 160–250 MPa. Although yield stress of short-aged sample was the lowest at room temperature and 180°C, the creep rupture time was the longest, and the minimum creep rate was the lowest among the three samples. Such a discrepancy between tensile and creep strength was attributed to dynamic precipitation in short-aged sample, in which newly formed precipitates during creep test compensate the softening induced by the growth and coarsening of existing GPB zones and S′/S phases. Therefore, it was clarified from this study that less stable precipitate microstructure with higher solute concentrations in the α-Al matrix of short-aged sample is good for creep resistance of this alloy system, although the tensile strength is lower than those of middle- and long-aged samples.

In-Situ X-ray Diffraction Analysis of Solution Treatment under High Pressure and Extra Strengthening of Al-11.5mass%Cu Alloy by Aging Treatment

T.Masuda, S.Hirosawa, Z.Horita, T.Shinmei, T.Irifune, Y.Higo, Y.Tange, Y.Ohishi

Journal of the Japan Institute of Metals and Materials 89 ( 9 ) 265 - 270 2025年6月 [査読有り]

DOI Web of Science CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人日本金属学会共著

This study applied solution treatment under high pressure as 2 and 6 GPa to an Al-11.5mass%Cu alloy for increasing the solubility limit of Cu atoms. In-situ high-energy X-ray diffraction (XRD) analysis using a facility at SPring-8 in JASRI (Japan Synchrotron Radiation Research Institute) revealed dissolution behavior of θ-Al2Cu phase during the solution treatment. After the solution treatment under 6 GPa, all the Cu atoms in 11.5 mass% were dissolved in the Al matrix, almost twice as much as the solubility limit under ambient pressure, resulting in the increased Vickers microhardness to 148 HV. Further increase in Vickers microhardness to 206 HV was obtained after aging at 190°C, and the aging behavior was also examined by the in-situ high-energy XRD analysis. In this study, the effect of ultrafine-grained structure produced by severe plastic deformation through high-pressure sliding method was also elucidated.

繰返し重ね接合圧延（ARB）と高圧スライド（HPS）加工によって作製した超微細粒工業用純アルミニウム（A1050）の機械的性質の比較

唐永鵬, 藤井俊樹, 廣澤渉一, 松田健二, 寺田大将, 堀田善治

日本金属学会誌 89 ( 1 ) 114 - 123 2025年1月 [査読有り]

DOI

担当区分：責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://doi.org/10.2320/jinstmet.JD202411

Improvement of formability of silicon-containing recycled wrought aluminum alloy by hot stamping after rapid heating

KAWANA Ryohei, HIROSAWA Shoichi, OOTAKI Mitsuhiro, MAENO Tomoyoshi, SUZUKI Yasushi and YABUKI Yuuji

Materials Research Proceedings 44 368 - 373 2024年9月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： https://mrforum.com/product/9781644903254-39/

Concurrent Improvement of strength, formability and SCC resistance of Al-Zn-Mg-Cu alloy by hot stamping after rapid heating and re-aging on paint baking treatment

HIROSAWA Shoichi, KIM Junmo, MAENO Tomoyosh, SUZUKI Yasushi and YABUKI Yuuji

Materials Research Proceedings 44 227 - 232 2024年9月 [査読有り]

DOI

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： https://mrforum.com/product/9781644903254-25/

Direct CALPHAD coupling phase-field model: Closed-form expression for interface composition satisfying equal diffusion potential condition

Morino, T; Ode, M; Hirosawa, S

PHYSICAL REVIEW E 109 ( 6 ) 2024年6月 [査読有り]

DOI Web of Science PubMed

記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://journals.aps.org/pre/abstract/10.1103/PhysRevE.109.065303

Severe plastic deformation for producing superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review

K.Edalati, A.Q.Ahmed, S.Akrami, K.Ameyama, V.Aptukov , R.N.Asfandiyarov, M.Ashida, V.Astanin, A.Bac … 全著者表示

Journal of Alloys and Compounds 1002 174667 - 150 2024年5月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）単著

その他リンク： https://doi.org/10.1016/j.jallcom.2024.174667

高圧ねじり（HPT）加工と時効処理の併用による高強度Al-Cu-Mg合金の開発

馬鵬程, 増田高大, 廣澤渉一, 堀田善治

軽金属 73 ( 12 ) 585 - 591 2023年12月 [査読有り]

DOI CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人軽金属学会共著

Solution treated Al-Cu-Mg alloys with three different compositions were subjected to high-pressure torsion (HPT) for 1 to 50 turns, and then aged at 423 K. By conducting HPT process, the hardness of the three alloys significantly increased after 50 turns, and the average grain sizes were refined to 130-140 nm. After aging treatment, the hardness was further increased to 271 HV, 288 HV and 273 HV in the peak aging condition for the Al-4Cu-1.5Mg, Al-4Cu- 3Mg and Al-5Cu-3Mg (in mass%) alloys, respectively. The contribution of several strengthening mechanisms was quantitatively evaluated in terms of grain boundary hardening, dislocation hardening, solid solution hardening and cluster/precipitation hardening. It is shown from the quantitative evaluation that simultaneous strengthening due to grain refinement and nanoscale precipitates is successfully achieved by combined application of HPT process and subsequent aging treatment.

Quantitative estimation of coarsening behavior of L12 domains in Ni-Al-V alloys by a first-principles calculation

Xu Hengxin, Hirosawa Shoichi, Tanimura Makoto

Vacuum 216 112397 2023年10月 [査読有り]

DOI Web of Science

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.sciencedirect.com/science/article/pii/S0042207X23005948

Comparison of mechanical properties in ultrafine grained commercial-purity aluminum (A1050) processed by accumulative roll bonding (ARB) and high-pressure sliding (HPS)

Tang Yongpeng, Fujii Toshiki, Hirosawa Shoichi, Matsuda Kenji, Terada Daisuke, Horita Zenji

Materials Transactions 64 ( 8 ) 1902 - 1911 2023年8月 [査読有り]

DOI CiNii Research

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人日本金属学会共著

This study presents that A1050 commercial-purity aluminum increases the tensile strength and ductility using the processes of accumulative roll bonding (ARB) and high-pressure sliding (HPS). Both processes yield a similar tensile strength exceeding 240 MPa after processing by ARB for 10 cycles and by HPS for the sliding distance of 15 mm, respectively. The stress-strain behavior is evaluated through microstructure observations and measurements of strain hardening rates. Significant grain refinement with well-defined grain boundaries is responsible for the strength increase. The grain refinement also leads to an increase in strain hardening rate and thus an increase in the ductility.

その他リンク： https://doi.org/10.2320/matertrans.MT-MF2022047

Hydrogen embrittlement mechanism of ultrafine-grained iron with different grain sizes

Mitomi Satoshi, Iwaoka Hideaki, Hirosawa Shoichi

ISIJ International 63 ( 6 ) 1096 - 1106 2023年6月 [査読有り]

DOI CiNii Research

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本鉄鋼協会共著

To investigate the effect of grain sizes on hydrogen embrittlement of 4N-purity iron, miniature tensile tests were conducted after hydrogen charging for the ultrafine-grained specimens produced by high-pressure torsion and subsequent annealing. Hydrogen embrittlement indexes defined from reduction of area were increased with decreasing grain size, and shear-type fracture occurred with fine dimples on the fracture surface of the diagonally raptured tensile specimen with a smaller grain size. The formation and growth of microvoids at triple junctions of grain boundaries ahead of propagated cracks were responsible for such earlier shear-type fracture because necking between adjacent microvoids more likely and extensively occurred. In the specimens with larger grain sizes or without hydrogen charging, on the other hand, local coalescence and growth of microvoids were predominant due to longer distances between triple junctions, resulting in void coalescence-type fracture with coarser dimple patterns. Therefore, hydrogen atoms introduced by hydrogen charging are considered to enhance the formation of deformation-induced vacancies in ultrafine-grained iron, resulting in shear-type fracture with finer dimple patterns.

その他リンク： https://www.jstage.jst.go.jp/article/isijinternational/63/6/63_ISIJINT-2022-562/_article/-char/en

Improvement of battery performance by applying iron-containing recycled aluminum to current collector-free anode of lithium-ion batteries

Kenta Kayanuma, Shoichi Hirosawa

Scripta Materialia 234 ( 0 ) 115504 2023年5月 [査読有り]

DOI

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）単著

その他リンク： https://www.sciencedirect.com/science/article/pii/S1359646223002282

Elucidation of diffusion blocking effect during anomalous structural change of L12 + D022 → L12 in Ni3Al1−xVx (0.4 < x < 0.55) alloys by a first-principles calculation

Hengxin Xu, Shota Nozaki, Shoichi Hirosawa, Tetsushin On, Hideaki Iwaoka

Computational Materials Science 221 112072 2023年2月 [査読有り]

DOI Web of Science

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.sciencedirect.com/science/article/pii/S0927025623000666?dgcid=coauthor

Development of high-strength Al–Cu–Mg alloy by combined application of high-pressure torsion and aging treatment

Ma Pengcheng, Masuda Takahiro, Hirosawa Shoichi, Horita Zenji

Materials Transactions 64 ( 2 ) 514 - 521 2023年2月 [査読有り]

DOI Web of Science CiNii Research

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人日本金属学会共著

Solution treated Al–Cu–Mg alloys with three different compositions were subjected to high-pressure torsion (HPT) for 1 to 50 turns, and then aged at 423 K. By conducting HPT process, the hardness of the three alloys significantly increased after 50 turns, and the average grain sizes were refined to 130–140 nm. After aging treatment, the hardness was further increased to 271 HV, 288 HV and 273 HV in the peak aging condition for the Al–4Cu–1.5Mg, Al–4Cu–3Mg and Al–5Cu–3Mg (in mass%) alloys, respectively. The contribution of several strengthening mechanisms was quantitatively evaluated in terms of grain boundary hardening, dislocation hardening, solid solution hardening and cluster/precipitation hardening. It is shown from the quantitative evaluation that simultaneous strengthening due to grain refinement and nanoscale precipitates is successfully achieved by combined application of HPT process and subsequent aging treatment.

その他リンク： https://www.jstage.jst.go.jp/article/matertrans/64/2/64_MT-LA2022049/_article

異なる結晶粒径をもつ超微細粒鉄の水素脆化機構

三富智, 岩岡秀明 , 廣澤渉一

鉄と鋼 108 ( 11 ) 864 - 876 2022年10月 [査読有り]

DOI Web of Science CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本鉄鋼協会共著

To investigate the effect of grain sizes on hydrogen embrittlement of 4N-purity iron, miniature tensile tests were conducted after hydrogen charging for ultrafine-grained specimens produced by high-pressure torsion and subsequent annealing. Hydrogen embrittlement indexes defined from reduction of area were increased with decreasing grain size, and shear-type fracture was occurred with fine dimples on the fracture surface of the specimen with a smaller grain size. The formation and growth of microvoids at triple junctions of grain boundaries ahead of propagated cracks were responsible for such earlier shear-type fracture because necking between adjacent microvoids is more likely and extensively occurred. In the specimens with larger grain sizes or without hydrogen charging, on the other hand, local coalescence and growth of microvoids were predominant due to longer distances between triple junctions, resulting in void coalescence-type fracture with coarser dimple patterns. Therefore, hydrogen atoms introduced by hydrogen charging are considered to enhance the formation of deformation-induced vacancies in ultrafine-grained iron, resulting in shear-type fracture with finer dimple patterns.

その他リンク： https://www.jstage.jst.go.jp/article/tetsutohagane/108/11/108_TETSU-2022-053/_article/-char/ja/

Homogeneous Strain Introduction Using Reciprocation Technique in High-Pressure Sliding

Masuda Takahiro, Fujimitsu Kazushige, Sumikawa Kosei, Kajita Takahiro, Tang Yongpeng, Hirosawa Shoi … 全著者表示

Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. 52 ( 9 ) 3860 - 3870 2021年9月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Continuous high-pressure torsion of pure Al and Al-2 wt% Fe alloy using multi-wires

Masuda Takahiro, Hirosawa Shoichi, Horita Zenji

J. Mater. Sci. 56 ( 14 ) 8679 - 8688 2021年2月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Springer Science+Buisiness Media 共著

その他リンク： https://link.springer.com/article/10.1007/s10853-020-05484-8

Microstructure evolution and mechanical properties of Al-Cu-Li alloys with different rolling schedules and subsequent artificial ageing heat treatment

Liu Dan-yang, Li Jin-feng, Liu Tian-le, Ma Yun-long, Iwaoka Hideaki, Hirosawa Shoichi, Zhang Kai, Z … 全著者表示

Materials Characterization 170 110676-1 - 110676-11 2020年12月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

その他リンク： https://www.sciencedirect.com/science/article/pii/S1044580320321471

Considerable improvement in elastic moduli and the underlying mechanism of Al-Cu-Zn alloy subjected to aging treatments

Kasama Ryota, Iwaoka Hideaki, Umeda Yuto, Tang Yongpeng, Hirosawa Shoichi, Watanabe Hiroyuki, Fujit … 全著者表示

Materialia 14 100911-1 - 100911-8 2020年12月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

その他リンク： https://www.sciencedirect.com/science/article/pii/S2589152920303276

Precipitate microstructures, mechanical properties and corrosion resistance of Al-1.0 wt%Cu-2.5 wt%Li alloys with different micro-alloyed elements addition

D. Liu, Y. Ma, J. Li, R. Zhang, H. Iwaoka and S. Hirosawa

Materials characterization 167 110528 2020年7月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

The evolution of precipitate microstructures of the Al-1.0wt%Cu-2.5wt%Li alloys with different micro-alloyed elements addition was investigated during ageing at 175 °C together with the mechanical properties and corrosion resistance. It was found that the Al-Cu-Li alloy with Zn addition possesses not only higher yield strength but also improved intergranular corrosion resistance, compared with the alloy with Mg addition. The corresponding precipitate microstructures were greatly affected by Zn or Mg micro-alloyed element addition, for example, with Zn addition the δ′-Al3Li, T1-Al2CuLi and θ′-Al2Cu (and θ″) phases were formed within grains, whereas the coarse TB-Al7Cu4Li phase and the T1 phases appeared at grain boundaries (GBs). In contrast, the Al-Cu-Li alloy with Mg addition possessed the δ′, T1 and S′-Al2CuMg phases within grains, while the coarse Alsingle bondCu phase and T1 phases were present at GBs. The alloy with combined Zn + Mg addition exhibited a duplex microstructure of the two alloys, resulting in lower mechanical strengths but the intermediate corrosion resistance. Therefore, the increased amount of Zn-containing coarsened TB phase at GBs was found to improve the corrosion resistance of the alloy with Zn addition, due to the smaller potential difference between the GB precipitates and the adjacent zones.

その他リンク： https://doi.org/10.1016/j.matchar.2020.110528

Achieving highly strengthened Al–Cu–Mg alloy by grain refinement and grain boundary segregation

T. Masuda, X. Sauvage, S. Hirosawa and Z. Horita

Materials Science and Engineering A 793 139668 2020年7月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

An age-hardenable Al–Cu–Mg alloy (A2024) was processed by high-pressure torsion (HPT) for producing an ultrafine-grained structure. The alloy was further aged for extra strengthening. The tensile strength then reached a value as high as ~1 GPa. The microstructures were analyzed by transmission electron microscopy and atom probe tomography. The mechanism for the high strength was clarified in terms of solid-solution hardening, cluster hardening, work hardening, dispersion hardening and grain boundary hardening. It is shown that the segregation of solute atoms at grain boundaries including subgrain boundaries plays a significant role for the enhancement of the tensile strength.

その他リンク： https://doi.org/10.1016/j.msea.2020.139668

Development of thermally stable powder metallurgy Al–Mn alloy extrusions and prediction of their terminal strength after prolonged service periods at high temperatures

N. Maki, H. Iwaoka and S. Hirosawa

Materials Science and Engineering: A 793 139813 2020年6月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

The demand for thermally stable aluminum alloys is increasing, but mechanical strength of most of existing alloys inevitably decreases when exposed to high temperature environments. In this study, newly developed powder metallurgy (P/M) Al–Mn alloy extrusions were subjected to full annealing treatment and temperature-accelerated test, to simulate decrease in hardness after prolonged service periods at high temperatures, and were found to possess higher thermal stability than a conventional ingot metallurgy (I/M) 3000 series Al–Mn alloy extrusion. Such improvement of high temperature strength was attributed to the increased volume fractions of thermally stable Al6Mn phase, and quantitatively explained according to the underlying strengthening mechanisms, by which their terminal strength after prolonged and thus practically unmeasurable periods could be predicted. Prediction of the microstructures and the corresponding Vickers hardness was also achieved by combining phase-field simulation and classical micromechanics approach, confirming that the utilized simulation model could enable to predict the terminal strength of the developed P/M alloy extrusions.

その他リンク： https://www.sciencedirect.com/science/article/pii/S0921509320308868

Effect of Scan Strategy on Mechanical Properties of AlSi12 Lattice Fabricated by Selective Laser Melting

Sairaiji Masahiko, Yoshizaki Hiroshi, Iwaoka Hideaki, Hirosawa Shoichi, Maruo Shoji

JOURNAL OF LASER MICRO NANOENGINEERING 15 ( 1 ) 7 - 11 2020年6月 [査読有り]

DOI Web of Science

記述言語：日本語掲載種別：研究論文（学術雑誌）共著

その他リンク： http://www.jlps.gr.jp/jlmn/uploads/19-015z.pdf

First-principles calculation of elastic properties of Cu-Zn intermetallic compounds for improving the stiffness of aluminum alloys

H.Iwaoka, S.Hirosawa

Computational Materials Science 174 109479 2019年12月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

In this study, we computed the elastic properties of Cu-Zn binary intermetallic compounds, CuZn, Cu5Zn8 and CuZn4, by first-principles calculation and discussed the capability of the improvement in stiffness of aluminum alloys by aging treatment. The disordered CuZn4 with random atom distribution was emulated for the first time by virtual crystal approximation (VCA) model and special quasirandom structure (SQS) model with symmetry-based projection (SBP) technique. From the present calculation results, it was found that Young’s modulus of polycrystalline aggregate of CuZn4 is almost comparable to the highest counterpart of Cu5Zn8 with lower elastic anisotropy, but the expected volume fraction of CuZn4 is much higher than that of Cu5Zn8 after aging treatment. According to the rule of mixtures for the aluminum matrix and differently oriented intermetallic compounds, therefore, CuZn4 was rationally recommended as the most suitable intermetallic compound for improving the stiffness of Al-Cu-Zn alloys.

その他リンク： https://doi.org/10.1016/j.commatsci.2019.109479

Microstructures and the Mechanical Properties of the Al–Li–Cu Alloy Strengthened by the Combined Use of Accumulative Roll Bonding and Aging

Yongpeng Tang, Shoichi Hirosawa, Seiji Saikawa, Kenji Matsuda, Seungwon Lee, Zenji Horita, Dai … 全著者表示

Advanced Science 2019年6月

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Wiley Online Library 共著

その他リンク： https://doi.org/10.1002/adem.201900561

Development of High-Strength Bolt Material of Al–Mg–Si Alloy by ECAP and Various Aging Treatments

Tomoyasu Obata, Yongpeng Tang, Hideaki Iwaoka, Shoichi Hirosawa, Keiki Mouri, Masahiko Shimoda

MATERIALS TRANSACTIONS Vol.60 ( 8 ) 1680 - 1687 2019年6月

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：J-STAGE 共著

その他リンク： https://doi.org/10.2320/matertrans.L-M2019825

Effect of pre-aging on artificial age-hardening behavior of Al-Mg-Si alloys with Mg + Si = 1.5 mass%

S. Tsukamoto, S. Nakamura, K. Fujiwara, S. Hirosawa, Y. Koshino, and Y. Aruga

Proc. of the 16th International Conference on Aluminum Alloys (ICAA16) 404577 1 - 6 2018年6月 [査読有り]

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： http://www.icaa-conference.net/ICAA16/Papers/Phase%20Transformations/404577%20Tsukamoto_final.pdf

ECAP加工と各種時効処理によるAl-Mg-Si系合金製高力ボルト素材の開発

小畑智靖，唐永鵬，岩岡秀明，廣澤渉一，毛利啓己，下田政彦

軽金属 68 ( 2 ) 65 - 72 2018年2月 [査読有り]

DOI CiNii Research

担当区分：責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　軽金属学会共著

Strengthening of A2024 alloy by high-pressure torsion and subsequent aging

I.F.Mohamed, T.Masuda, S.Lee, K.Edalati, Z.Horita, S.Hirosawa, K.Matsuda, D.Terada, M.Z.Omar

Materials Science and Engineering A 704 112 - 118 2017年7月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

その他リンク： https://www.sciencedirect.com/science/article/pii/S0921509317309887

Concurrent strengthening of ultrafine-grained age-hardenable Al-Mg alloy by means of high-pressure torsion and spinodal decomposition

Y.Tang, W.Goto, S.Hirosawa, Z.Horita, S.Lee, K.Matsuda and D.Terada

Acta Materialia 131 57 - 64 2017年6月 [査読有り]

DOI Web of Science J-GLOBAL

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD 共著

その他リンク： http://www.sciencedirect.com/science/article/pii/S1359645417302859

Al-Mg二元合金の熱力学的解析とスピノーダル線を含む状態図の決定

古後翔佑、岩岡秀明、廣澤渉一

軽金属 67 ( 5 ) 173 - 178 2017年5月 [査読有り]

DOI CiNii Research

担当区分：責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　軽金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/jilm/67/5/67_670509/_pdf

Three strategies to achieve concurrent strengthening by ultrafine-grained and precipitation hardenings for severly deformed age-hardenable aluminum alloys

S.Hirosawa, Y.Tang, Z.Horita, K.Matsuda, S.Lee and D.Terada

Proc. of 9th Pacific Rim Inter. Conf. on Advanced Materials and Processing (PRICM9) 251 - 253 2016年8月 [査読有り]

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：The Japan Inst. of Metals and Materials 共著

Aging Behavior of Al 6061 Alloy Processed by High-Pressure Torsion and Subsequent Aging

I.F.Mohamed, S.Lee, K.Edalati, Z.Horita, S.Hirosawa, K.Matsuda, D.Terada

Metallurgical and Materials Transactions A 46 ( 6 ) 2664 - 2673 2015年3月 [査読有り]

DOI Web of Science J-GLOBAL

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SPRINGER 共著

会議: Bulk Metallic Glasses 11 Symposium
開催地: TMS Annual Meeting & Exhibit, San Diego, CA
日付: FEB 16-20, 2014

実験的に得られる超微細粒Al-　Mg-Si合金の時効硬化挙動を、各強化機構の寄与を定量的しながら明らかにした

Comparative and complementary characterization of precipitate microstructures in Al-Mg-Si(-Li) alloys by transmission electron microscopy, energy dispersive X-ray spectroscopy and atom probe tomography

Yuki Koshino, Masaya Kozuka, Shoichi Hirosawa, Yasuhiro Aruga

Journal of Alloys and Compounds 622 765 - 770 2015年2月 [査読有り]

DOI Web of Science J-GLOBAL

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier 共著

タイトル：透過型電子顕微鏡,エネルギー分散X線分光分析そして原子プローブトモグラフィーによるAl‐Mg‐Si(‐Li)合金中の析出物の微細構造に関する比較論的および補完的キャラクタリゼーション

自動車ボディパネル用Al-Mg-Si合金のベークハード性を高める手法として、Liの微量添加が有効であることを見出し、その機構をTEM,EDS,APTを用いて原子レベルで明らかにした

その他リンク： http://www.sciencedirect.com/science/article/pii/S0925838814026371?via%3Dihub

3D/4Dイメージング応用技術の最前線」3次元アトムプローブによるアルミニウム合金中のナノ組織解析

廣澤渉一、小椋智、芹澤愛

軽金属 64 ( 11 ) 542 - 550 2014年11月

DOI J-GLOBAL

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　軽金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/jilm/64/11/64_542/_article/-char/ja/

Mechanical properties and microstructure of 6061 aluminum alloy severely deformed by ARB process and subsequently aged at low temperatures

D.Terada, Y.Kaneda, Z.Horita, K.Matsuda, S.Hirosawa, N.Tsuji

6th International Conference on Nanomaterials by Severe Plastic Deformation 63 012088 2014年7月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IOP publishing 共著

会議：6th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2014
開催地：Metz, France
日付：Jun 30-Jul 4, 2014

6061Al-Mg-Si合金超微細粒材に低温の時効処理を施した際の微視的組織ならびに引張特性を明らかにした

TEM observation of HPT-processed Cu-added excess Mg-type Al-Mg-Si alloys

S.Maruno, K.Watanabe, K.Matsuda, S.Saikawa, S.Hirosawa, Z.Horita, S.Lee, D.Terada

Materials Science Forum 794-796 ( Pt2 ) 811 - 814 2014年6月

DOI Web of Science J-GLOBAL

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：TRANS TECH PUBLICATIONS LTD 共著

会議: 14th International Conference on Aluminium Alloys (ICAA)
開催地: Trondheim, NORWAY
日付: JUN 15-19, 2014

Mg過剰型Al-Mg-Si合金超微細粒材にCuを微量添加して時効処理した時の微視的組織をTEM観察によって明らかにした

Thermodynamic assessment and determination of spinodal lines for Al-Zn binary system

S.Kogo, S.Hirosawa

ALUMINIUM ALLOYS 2014 - ICAA14(Materials Science Forum) 794-796 ( Pt.2 ) 634 - 639 2014年6月 [査読有り]

DOI Web of Science J-GLOBAL

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：TRANS TECH PUBLICATIONS LTD 共著

会議: 14th International Conference on Aluminium Alloys (ICAA)
開催地: Trondheim, NORWAY
日付: JUN 15-19, 2014

タイトル（和）：Al‐Zn二元系のスピノダル線に関する熱力学評価,及び決定

Al-Zn二元合金の準安定スピノーダル線を熱力学アセスメントの手法で初めて明らかにした

Effects of Cu or Li addition and multi-step aging conditions on the bake-hardenability of an Al-Mg-Si alloy

Y.Koshino, S.Hirosawa, Y.Aruga, H.Shishido, K.Matsumoto

Materials Science Forum 794-796 ( Pt.2 ) 1152 - 1156 2014年6月 [査読有り]

DOI J-GLOBAL

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

会議: 14th International Conference on Aluminium Alloys (ICAA)
開催地: Trondheim, NORWAY
日付: JUN 15-19, 2014

タイトル（和）：Al‐Mg‐Si合金の焼付硬化性に対してCu,又はLiの添加,及び多工程時効条件がもたらす影響

自動車ボディパネル用Al-Mg-Si合金のベークハード性を高める手法として、CuおよびLiの微量添加が有効であることを見出した

Softening by severe plastic deformation and hardening by annealing of aluminum-zinc alloy: Significance of elemental and spinodal decompositions

A.Alhamidi, K.Edalati, Z.Horita, S.Hirosawa, K.Matsuda, D.Terada

Materials Science Engineering A 610 17 - 27 2014年5月 [査読有り]

DOI Web of Science J-GLOBAL

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER 共著

タイトル（和）：アルミニウム‐亜鉛合金の重塑性変形による軟化と焼鈍による硬化:元素とスピノーダル分解の重要性

超微細粒Al-Zn合金の特異な性質として、巨大ひずみ加工による軟化、ならびに熱処理による硬化を初めて見出した

その他リンク： http://www.sciencedirect.com/science/article/pii/S0921509314006273?via%3Dihub

Aging Behavior of Ultrafine-Grained Al-Mg-Si-X (X=Cu, Ag, Pt, Pd) alloys Produced by High-Pressure Torsion

D. Akama, S. Lee, Z. Horita, K. Matsuda and S. Hirosawa

Materials Transactions 55 ( 4 ) 640 - 645 2014年4月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Japan Institute of Metals 共著

Cu, Ag, Pt, Pdを微量添加した超微細粒Al-Mg-Si系合金の時効硬化挙動について系統的に明らかにした

Effect of HPT one age-hardening behavior in Cu-added excess Mg-type Al-Mg-Si alloys

S.Maruno, S.Saikawa, S.Hirosawa, T.Hamaoka, Z.Horita, S.Lee, D.Terada, K.Matsuda

Advanced Materials Research 992 487 - 490 2013年12月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

会議: 8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013
開催地: Las Vegas, NV
日付: DEC 2-6, 2013

Mg過剰型Al-Mg-Si合金超微細粒材にCuを微量添加して時効処理した時の挙動を明らかにした

HPT加工後に時効した過剰Mg型Al-Mg-Si合金の時効挙動と組織観察

渡邊克己、丸野瞬、松田健二、李昇原、堀田善治、寺田大将、才川清二、廣澤渉一

軽金属 63 ( 11 ) 406 - 412 2013年11月 [査読有り]

DOI CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　軽金属学会共著

過剰Mg型Al-Mg-Si合金超微細粒材に時効処理を施した時の微視的組織変化を透過型電子顕微鏡により明らかにした

その他リンク： https://www.jstage.jst.go.jp/article/jilm/63/11/63_406/_article/-char/ja/

Methods for Designing Concurrently Strengthened Severely Deformed Age-Hardenable Aluminum Alloys by Ultrafine-Grained and Precipitation Hardenings

Shoichi Hirosawa, Takumi Hamaoka, Zenji Horita, Seungwon Lee, Kenji Matsuda and Daisuke Terada

Metallurgical and Materials Transactions A 44 ( 8 ) 3921 - 3933 2013年8月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

時効硬化型アルミニウム合金の強化機構の並立を図るための指導原理を提案し、従来材を大きく超える強度をもつ新規アルミニウム合金を開発した

その他リンク： http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s11661-013-1730-y

HPT加工により結晶粒を超微細化したAl-Mg-Si-X (X=Cu, Ag, Pt, Pd）合金の時効挙動

赤間大地、李昇原、堀田善治、松田健二、廣澤渉一

軽金属 62 ( 11 ) 448 - 453 2012年11月 [査読有り]

DOI CiNii Research J-GLOBAL

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：軽金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/jilm/62/11/62_448/_article/-char/ja/

Development of age-hardening technology for ultrafine-grained Al-Li-Cu alloys fabricated by high-pressure torsion

H.Motoshima, S.Hirosawa, S.Lee, Z.Horita, K.Matsuda, D.Terada

Proc. of 13th International Conference on Aluminum Alloys (ICAA13) 939 - 944 2012年6月 [査読有り]

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Microstructural change and mechanical properties with isochronal aging in Al-Ni-Gd metallic glasses

H.Kato, S.Hirosawa, K.Matsuda, G.J.Shiflet

Proc. of 13th International Conference on Aluminum Alloys (ICAA13) 1235 - 1240 2012年6月 [査読有り]

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Age-hardnening of an Al-Li-Cu-Mg (2091) processed by high-pressure torsion

S.Lee, Z.Horita, S.Hirosawa, K.Matsuda

Materials Science and Engineering A 546 82 - 89 2012年6月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Experimental and Computational Studies of Competitive Precipitation Behavior Observed in Microstructures with High Dislocation Density and Ultra-fine Grains

T.Masuda, S.Hirosawa, Z.Horita and K.Matsuda

Mater. Sci. Forum 706-709 1787 - 1792 2012年1月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Al-Zn-Mg合金のPFZ形成および機械的性質に及ぼすSn添加ならびにAg,Sn複合添加の影響

小椋智、廣澤渉一、廣瀬明夫、里達雄

軽金属 61 ( 7 ) 316 - 321 2011年7月 [査読有り]

DOI CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　軽金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/jilm/61/7/61_7_316/_article/-char/ja/

高転位密度および超微細粒組織をもつAl-Mg-Si合金で観察される競合析出現象の実験的ならびに計算科学的研究

増田哲也、廣澤渉一、堀田善治、松田健二

日本金属学会誌 75 ( 5 ) 283 - 290 2011年5月 [査読有り]

DOI Web of Science CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人　日本金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/jinstmet/75/5/75_5_283/_article/-char/ja/

Effect of Microalloying Tin and Combined Addition of Silver and Tin on the Formation of Precipitate Free Zones and Mechanical Properties in Al-Zn-Mg Alloys

Tomo Ogura, Shoichi Hirosawa, Akio Hirose and Tatsuo Sato

Materials Transactions 52 ( 5 ) 900 - 905 2011年5月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Effect of Amount of Pre-strain on Bake-hardening Response of an Al-Mg-Si Alloy

T. Masuda, Y. Takaki, S. Hirosawa

Proc. of 12th Int. Conf. on Aluminum Alloys 1065 - 1070 2010年9月 [査読有り]

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： http://www.icaa-conference.net/ICAA12/pdf/3B-11.pdf

Effect of Ultrasound Treatment on Age-Hardening Response in an Al-Mg-Si Alloy

S. Hirosawa, J. Kamibeppu, M. Iqbal,H. Hosoda, T. Sato

Proc. of 12th Int.Conf. on Aluminum Alloys 1938 - 1943 2010年9月 [査読有り]

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： http://www.icaa-conference.net/ICAA12/pdf/P056.pdf

Creep Deformation Mechanism of Al-Mn Alloy Sheets with a Wide Range of Grain Size

S. Hirosawa, S. Yokawa, A. Sakai, M. Ando, A. Niikura, Y. Suzuki

Proc. of 12th Int. Conf. on Aluminum Alloys 1567 - 1572 2010年9月 [査読有り]

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： http://www.icaa-conference.net/ICAA12/pdf/4B-01.pdf

Aging behavior of Al-Li-Cu-Mg alloy processed by high-pressure torsion

S.Lee, D.Akama, Z.Horita, T.Masuda, S.Hirosawa and K.Matsuda

Materials Science Forum 654-656 1243 - 1246 2010年6月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Al-0.6%Mg-1.0%Si合金のベークハード挙動に及ぼす予ひずみ付与および予備時効処理の複合効果

増田哲也，高木康夫，櫻井健夫，廣澤渉一

軽金属 60 ( 4 ) 183 - 189 2010年4月 [査読有り]

DOI CiNii Research

担当区分：責任著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　軽金属学会共著

Combined effect of pre-straining and pre-aging on bake-hardening behavior of an Al-0.6mass%Mg-1.0mass%Si alloy

T.Masuda, Y.Takaki, T.Sakurai and S.Hirosawa

Materials Transactions 51 ( 2 ) 325 - 332 2010年2月 [査読有り]

DOI Web of Science

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.jstage.jst.go.jp/article/matertrans/51/2/51_L-M2009831/_article#:~:text=On%20the%20other%20hand%2C%20by%20combining%20with%20pre-aging,enhanced%20precipitation%20of%20%CE%B2%E2%80%B3%20phase%20in%20the%20matrix.

Atom probe tomography of nanoscale microstructures within precipitate free zones in Al-Zn-Mg(-Ag) alloys

T.Ogura, S.Hirosawa, A.Cerezo and T.Sato

Acta Materialia 58 5714 - 5723 2010年 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Aging behavior of Al-Mg-Si alloys processed by high-pressure torsion

D.Akama, Z.Horita, K.Matsuda and S.Hirosawa

Materials Science Forum 667-669 259 - 264 2010年 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Interactions between Fermi surfaces and Brillouin zone boundaries and phase stability of embedded metallic nanoparticles

Y.Nagai, T.Toyama, Z.Tang, K.Inoue, T.Chiba, M.Hasegawa, S. Hirosawa, T.Sato

Physical Review B, Condenced Matter and Materials Physics 79 ( 20 ) 2014051 - 2014054 2009年5月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Determining the composition of small features in atom probe: bcc Cu-rich precipitates in an Fe-rich matrix

A.Morley, G.Sha, S. Hirosawa, A.Cerezo, G.D.W.Smith

Ultramicroscopy 109 535 - 540 2009年 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Al-3.0%Mg-1.0%Cu合金の時効硬化およびナノ析出組織に及ぼすAg添加の影響

廣澤渉一、大村知也、里　達雄、鈴木義和

古河スカイレビュー ( 4 ) 34 - 42 2008年4月 [査読有り]

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.uacj.co.jp/review/furukawasky/004/abst05.htm

Three-dimensional atom probe characterization of nanoclusters responsible for multistep aging behavior of an Al-Mg-Si alloy

Ai Serizawa, Shoichi Hirosawa and Tatsuo Sato

Metallurgical and Materials Transactions A 39A 243 - 251 2008年2月 [査読有り]

DOI Web of Science

記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://link.springer.com/article/10.1007/s11661-007-9438-5

Quantitative estimation of microstructural dependence of creep characteristics for 3003 aluminum alloy sheets

S. Hirosawa, M. Ando, A. Niikura and Y. Suzuki

Aluminum alloys, Their physical and mechanical properties, Wiley-VCH GmbH & Co.KGaA 2 1532 - 1538 2008年 [査読有り]

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

3DAPを用いたAl-Zn合金における溶質集合体のナノスケール解析

小宮良樹、廣澤　渉一、里　達雄

まてりあ 46 ( 12 ) 815 2007年12月 [査読有り]

DOI CiNii Research J-GLOBAL

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人　日本金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/materia1994/46/12/46_12_815/_article/-char/ja/

原子炉圧力容器低合金鋼で形成するナノクラスタの3DAP解析

廣澤渉一、A. Cerezo、G. D. W. Smith

まてりあ 46 ( 12 ) 814 2007年12月 [査読有り]

DOI CiNii Research

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人　日本金属学会共著

その他リンク： https://www.jstage.jst.go.jp/article/materia1994/46/12/46_12_814/_article/-char/ja/

Improvement of strength and ductility by controlling PFZ with microalloying elements in Al-Zn-Mg alloys

T. Ogura, S. Hirosawa and T. Sato

Materials Science Forum 561-565 235 - 238 2007年11月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： https://www.scientific.net/MSF.561-565.235#:~:text=Improvement%20of%20Strength%20and%20Ductility%20by%20Controlling%20PFZ,been%20investigated%20using%20TEM%2C%20tensile%20test%20and%20nanoindentation.

First-principles calculation of interaction energies between solutes and/or vacancies for predicting atomistic behaviors of microalloying elements in aluminum alloys

S.Hirosawa, F.Nakamura and T.Sato

Materials Science Forum 561-565 283 - 286 2007年11月 [査読有り]

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： https://www.scientific.net/MSF.561-565.283

Al-3mass%Mg-1mass%Cu合金の時効硬化およびナノ析出組織に及ぼすAg添加の影響

廣澤渉一、大村知也、里　達雄、鈴木義和

軽金属 56 ( 11 ) 673 - 679 2006年11月 [査読有り]

DOI

記述言語：日本語掲載種別：研究論文（学術雑誌）共著

3DAPによるAl-Zn合金の室温時効における溶質集合体のナノスケール解析

小宮良樹、廣澤　渉一、里　達雄

軽金属 56 ( 11 ) 662 - 666 2006年11月 [査読有り]

DOI CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：軽金属学会共著

Al-Zn-Mg(-Ag)合金の耐力および伸びに及ぼす粒界近傍の析出組織の影響

小椋　智、廣澤　渉一、里　達雄

軽金属 56 ( 11 ) 644 - 650 2006年11月 [査読有り]

DOI CiNii Research

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：軽金属学会共著

HRTEM observation and 3DAP analysis of nano-scale microstructures in melt-spun Al-Ni-Gd metallic glasses

S.Hirosawa, G.J.Shiflet,T.Sato and K.Matsuda

Proc. 16th Int. Microscopy Congress 800 2006年9月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

札幌、北海道

Quantitative Correlation between Strength, Ductility and Precipitate Microstructures with PFZ in Al-Zn-Mg(-Ag, Cu) Alloys

T.Ogura, S.Hirosawa, A.Cerezo and T.Sato

Materials Science Forum 519-521 431 - 436 2006年7月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Vancouver, Canada

その他リンク： https://www.scientific.net/MSF.519-521.431

Thermal ageing effect of pressure vessel steel

G.Sha,A.Morley,A.Cerezo,G.D.W.Smith, S.Hirosawa, D.Ellis and T.Williams

Proceedings of The Joint 19th International Vacuum Nanoelectronics Conference and 50th International Field Emission Symposium 93 - 94 2006年7月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Guilin, China

その他リンク： https://ieeexplore.ieee.org/document/4134475

Characterization of segregation and precipitation at grain boundaries in thermally aged pressure vessel steels

G.Sha, S.Hirosawa, A.Morley, A.Cerezo, G.D.W.Smith, D.Ellis and T.Williams

Proceedings of The Joint 19th International Vacuum Nanoelectronics Conference and 50th International Field Emission Symposium 523 - 524 2006年7月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Guilin, China

その他リンク： https://ieeexplore.ieee.org/document/4134690

Formability and Bake-hardenability of Al-Mg-Cu Alloy Sheets by Asymmetric Warm Rolling

Y.Suzuki、T.Omura, S.Hirosawa and T.Sato

Materials Science Forum 519-521 1505 - 1510 2006年7月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Vancouver. Canada

その他リンク： https://www.scientific.net/MSF.519-521.1505#:~:text=The%20Al-Mg-Cu%20alloy%20sheets%20by%20AWR%20have%20been,to%20that%20of%20the%20identical%20alloy%20by%20CR.

3DAP Characterization and Thermal Stability of Nano-Scale Clusters in Al-Mg-Si Alloys

A.Serizawa, S.Hirosawa and T.Sato

Materials Science Forum 519-521 245 - 250 2006年7月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Vancouver. Canada

その他リンク： https://www.scientific.net/MSF.519-521.245

Improvement of Bake-Hardening Response of Al-Mg-Cu Alloys by means of Nanocluster Assist Processing (NCAP) Technique

S.Hirosawa, T.Omura、Y.Suzuki and T.Sato

Materials Science Forum 519-521 215 - 220 2006年7月

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Vancouver, Canada

3DAP Analysis and Computer Simulation of Nanocluster Formation in the Initial Aging Stage of Al-Zn Alloys

Y.Komiya, S.Hirosawa and T.Sato

Materials Science Forum 519-521 437 - 442 2006年7月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Vancouver, Canada

その他リンク： https://www.semanticscholar.org/paper/3DAP-Analysis-and-Computer-Simulation-of-Formation-Komiya-Hirosawa/7e13314a6d832b6d1a4454ec05bf1a076d01dad7

Comparison of the number densities of nanosized Cu-rich precipitates in ferritic alloys measured using EELS and EDX mapping, HREM and 3DAP

S. Lozano-perez, G. Sfa, J.M. Titchmarsh, M.L. Jenkins, S. Hirosawa, A. Cerezo and G.D.W. Smith

Journal of Materials Science 41 2559 - 2565 2006年 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://link.springer.com/article/10.1007/s10853-006-7768-0

Nano-scale clusters formed in the early stage of phase decomposition of Al-Mg-Si alloys

S.Hirosawa, T.Sato

Materials Science Forum ( 475-479 ) 357 - 360 2005年11月

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

PRICM5, 北京（中国）

Control of nano-precipitates in age-hardenable aluminum alloys and their mechanical properties

T.Sato, S.Hirosawa

Materials Science Forum ( 475-479 ) 337 - 342 2005年11月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

PRICM5, 北京（中国）

Experimental and computational investigation of formation of precipitate free zones in an Al-Cu alloy

S.Hirosawa, Y.Oguri and T.Sato

Materials Transactions 46 ( 6 ) 1230 - 1234 2005年6月 [査読有り]

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.jstage.jst.go.jp/article/matertrans/46/6/46_6_1230/_article

3-D atomic-scale experimental and modelling studies of the early stages of precipitation

A.Cerezo, S.Hirosawa, G.Sha and G.D.W.Smith

Proc. of Int. Conf. on Solid-to-Solid Phase Transformations in Inorganic Materials 2005 (PTM05) 251 - 262 2005年5月 [査読有り]

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

その他リンク： https://ora.ox.ac.uk/objects/uuid:f3dd56b4-0c1b-4652-accd-f3445d2ca4a7

Full-potential KKR calculations for point-defect interaction energies in Al, based on the generalized-gradient approximation: two-body and many-body interactions

F.Nakamura, T.Hoshino, S.Tanaka, K.Hirose, S.Hirosawa and T.Sato

Trans. Materials Research Society of Japan 30 ( 3 ) 873 - 876 2005年 [査読有り]

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Materials Research Society of Japan 共著

その他リンク： https://www.mrs-j.org/pub/tmrsj/vol30_no3/vol30_no3_873.pdf

Bake-Hardenability of Al-Mg-Cu-X (Ag,Zn,Si) Alloy Sheets

Y.Suzuki, A.Hibino, T.Muramatsu, S.Hirosawa and T.Sato

Proc. of 9th Int. Conf. on Aluminum Alloys 258 - 263 2004年8月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Brisbane, Australia

その他リンク： http://www.icaa-conference.net/ICAA9/data/papers/GP%2024.pdf

Quantitative Analysis of the Vicinity of Grain Boundaries with Precipitate Free Zone in Al-Zn-Mg (-Ag) Alloys

T.Ogura, S.Hirosawa and T.Sato

Proc. of 9th Int. Conf. on Aluminum Alloys 1061 - 1066 2004年8月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Brisbane, Australia

その他リンク： http://www.icaa-conference.net/ICAA9/data/papers/GP%20158.pdf

Formation mechanisms of precipitate free zones in age-hardenable Al alloys

S.Hirosawa, Y.Oguri, T.Ogura and T.Sato

Proc. of 9th Int. Conf. on Aluminum Alloys 666 - 671 2004年8月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Brisbane, Australia

その他リンク： http://www.icaa-conference.net/ICAA9/data/papers/GP%2091.pdf

Effects of Si and Ge addition on the Al3Zr precipitates in an Al-0. 6mass%Zr Alloy

F. Nakamura, S.Hirosawa and T. Sato

Proc. of 9th Int. Conf. on Aluminum Alloys 582 - 587 2004年8月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Brisbane, Australia

その他リンク： http://www.icaa-conference.net/ICAA9/data/papers/GP%2077.pdf

Nano-cluster Controlled Precipitation in Al-Cu and Al-Mg-Si Alloys Containing Microalloying Elements

T.Sato, K.Hirose, S.Hirosawa

Proc. of 9th Int. Conf. on Aluminum Alloys 956 - 962 2004年8月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Brisbane, Australia

その他リンク： http://www.icaa-conference.net/ICAA9/data/papers/GP%20139.pdf

Quantitative characterization of precipitate free zones in Al-Zn-Mg(-Ag) alloys by microchemical analysis and nanoindentation measurement

T.Ogura, S.Hirosawa and T.Sato

Sci. Tech. Adv. Mater. 5 491 - 496 2004年 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.sciencedirect.com/science/article/abs/pii/S1468699604000580

Combined atomic-scale modelling and experimental studies of nucleation in the solid state

A.Cerezo, S.Hirosawa, I.Rozdilsky and G.D.W.Smith

Phil. Trans. R. Soc. Lond. A361 463 - 477 2003年12月 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://royalsocietypublishing.org/doi/10.1098/rsta.2002.1139

Roles of Microalloying Elements on the Cluster Formation in the Initial Stage of Phase Decomposition of Al-Based Alloys

T.Sato, S.Hirosawa, K.Hirose and T.Maeguchi

Metallurgical and Materials Transactions A 34 2745 - 2755 2003年 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://link.springer.com/article/10.1007/s11661-003-0176-z

Effects of quenched-in excess vacancies and microalloying elements on phase decomposition of Al-Cu alloys

K.Hirose, S.Hirosawa and T.Sato

Materials Science Forum 396-402 795 - 800 2002年7月

DOI

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

ICAA8, Cambridge (UK)

その他リンク： https://www.scientific.net/MSF.396-402.795

Atomistic behavior of microalloying elements in phase decomposition of Al based alloys

S.Hirosawa, T.Sato

Materials Science Forum 396-402 649 - 654 2002年7月

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

ICAA8, Cambridge (UK)

その他リンク： https://www.scientific.net/MSF.396-402.649

Atomistic behavior of microalloying elements in thermally aged Fe-C-Ni-Mn-Si-Mo-Cu alloys - II. Monte Carlo computer simulation

S.Hirosawa, A.Cerezo, G.D.W.Smith, T.Williams and D.Ellis

Proc. of the 10th meeting of Int. Group of Radiation Damage Mechanism 2002年5月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

淡路島（兵庫）

Atomistic behavior of microalloying elements in thermally aged Fe-C-Ni-Mn-Si-Mo-Cu alloys - I. Experimental investigation

S.Hirosawa, A.Cerezo, G.D.W.Smith, T.Williams and D.Ellis

Proc. of the 10th meeting of Int. Group of Radiation Damage Mechanism 2002年5月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

淡路島（兵庫）

3DAP analysis and Monte Carlo simulation of microstructure evolution in thermally aged Fe-C-Ni-Mn-Si-Mo alloys

S.Hirosawa, A.Cerezo, G.D.W.Smith, T.Williams and D.Ellis

Proc. of Workshop on dose rate effects in reactor pressure vessel materials 2001年11月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Lake Taho (USA)

3DAP analysis of microstructure evolution in thermally aged Fe-C-Ni-Mn-Si-Mo-Cu alloys

S.Hirosawa, A.Cerezo, G.D.W.Smith, T.Williams and D.Ellis

Proc. of the 47th Int. Field Emission Symposium 2001年7月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

ベルリン（ドイツ）

Monte Carlo computer simulation of the atomistic behavior of microalloying elements in Al-Li alloys

S.Hirosawa, T.Sato

Modelling and Simulation in Materals Science and Engineering 9 129 - 141 2001年5月 [査読有り]

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://iopscience.iop.org/article/10.1088/0965-0393/9/3/301

Microstructure evolution and role of microalloying elements during thermal ageing of Fe-Cu-Ni based alloys - II. Application of Monte Carlo computer simulation

S.Hirosawa, A.Cerezo, G.D.W.Smith, T.Williams and D.Ellis

Proc. of the 9th meeting of Int. Group on Radiation Damage Mechanisms in Pressure Vessel Steels 2000年9月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

ルーベン（ベルギー）

Microstructure evolution and role of microalloying elements during thermal ageing of Fe-Cu-Ni based alloys - I. Experimental investigation using 3DAP

S.Hirosawa, A.Cerezo, G.D.W.Smith, T.Williams and D.Ellis

Proc. of the 9th meeting of Int. Group on Radiation Damage Mechanisms in Pressure Vessel Steels 2000年9月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

ルーベン（ベルギー）

Computer simulation of the effects of trace-additional Cu and Mg elements on the delta' phase precipitation in an Al-Li alloy

J.Yokota, S.Hirosawa, T.Sato, A.Kamio

Light Metals Review 7 24 - 29 2000年 [査読有り]

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Classification of the role of microalloying elements in phase decomposition of Al based alloys

S.Hirosawa, T.Sato, A.Kamio, H.M.Flower

Acta Materialia 48 1797 - 1806 2000年 [査読有り]

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

Role of microalloying elements in phase decomposition of Al based alloys

S.Hirosawa, T.Sato, A.Kamio

Proc. of Int. Conf. on Solid-Solid Phase Transformations (JIMIC-3) 12 161 - 164 1999年5月 [査読有り]

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

京都

Al-Li合金のδ’相に及ぼすCuおよびMg微量添加の影響の計算機シュミレーション

横田純一、廣澤渉一、里　達雄、神尾彰彦

軽金属 49 ( 2 ) 51 - 56 1999年2月 [査読有り]

DOI

記述言語：日本語掲載種別：研究論文（学術雑誌）共著

Comparison between resistivity changes and Monte Carlo simulation for GP zone formation in Al-Cu alloys containing additional elements

S.Hirosawa, T.Sato, J.Yokota and A.Kamio

Materials Transactions, JIM 39 ( 1 ) 139 - 146 1998年 [査読有り]

DOI

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Effects of Mg addition on the kinetics of low-temperature precipitation in Al-Li-Cu-Ag-Zr alloys

S.Hirosawa, T.Sato, A.Kamio

Materials Science and Engineering A 242 195 - 201 1998年 [査読有り]

DOI

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）共著

その他リンク： https://www.sciencedirect.com/science/article/pii/S0921509397005303

Effects of additional elements and quenching conditions on the T1 phase precipitation in Al-1.3%Li-5.5%Cu-0.13%Zr alloys

S. Hirosawa, T.Sato, A.Kamio, K.Kobayashi and T.Sakamoto

Light Metals Review 4 14 - 20 1997年 [査読有り]

記述言語：英語掲載種別：研究論文（学術雑誌）共著

Low-temperature precipitation of Al-Li-Cu alloys containing additional elements

S.Hirosawa, T.Sato, A.Kamio, K.Kobayashi and T.Sakamoto

Materials Science Forum 217-222 839 - 844 1996年7月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

ICAA5, Grenoble (France)

その他リンク： https://www.osti.gov/etdeweb/biblio/402749

Al-1.3%Li-5.5%Cu-0.13%Zr系合金におけるT1相の粒内析出に及ぼす微量添加元素および焼入れ条件の影響

廣澤渉一、里　達雄、神尾彰彦、小林一徳、坂本敏正

軽金属 46 ( 3 ) 119 - 125 1996年 [査読有り]

DOI

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）共著

Kinetics of low-temperature precipitation in Al-Li-Cu alloys containing additional elements

S.Hirosawa, T.Sato, A.Kamio, K.Kobayashi and T.Sakamoto

Int. Symp. on Advanced Materials and Technology for the 21st Century 31 1995年12月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

日本金属学会第117回秋期大会（ホノルル、ハワイ）

Effects of Mg addition on precipitation hardening of Al-Li-Cu-Zr alloys containing Ag

S.Hirosawa, T.Sato, A.Kamio, K.Kobayashi and T.Sakamoto

Proc. of the 4th Int. Conf. on Aluminum Alloys 2 199 - 204 1994年9月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）共著

Atlanta (USA)

その他リンク： http://www.icaa-conference.net/ICAA4/Volume%202/199.pdf

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