Papers - HASEGAWA Makoto
about 72-
Thirathipviwat, P; Kotake, T; Suzuki, T; Hasegawa, M; Matsumoto, K; Sato, S
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 927 2025.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Sohei Harada, Takashi Yamaguchi, Pramote Thirathipviwat, Makoto Hasegawa
Journal of Alloys and Compounds 1003 2024.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
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Thirathipviwat, P; Hasegawa, M; Onuki, Y; Sato, S; Mishin, OV
MATERIALS CHARACTERIZATION 212 2024.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Thirathipviwat, P; Nozawa, S; Furusawa, M; Onuki, Y; Hasegawa, M; Matsumoto, K; Sato, S
MATERIALS LETTERS 349 2023.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Pramote Thirathipviwat, Yusuke Onuki, Jithin Vishnu, Praveenkumar Kesavan, Ansheed Raheem, Geetha M … Show more authors
Pramote Thirathipviwat, Yusuke Onuki, Jithin Vishnu, Praveenkumar Kesavan, Ansheed Raheem, Geetha Manivasagam, Karthik V Shankar, Makoto Hasegawa, Shigeo Sato Hide authors
Materials Letters 339 134105 2023.5 [Reviewed]
DOI Web of Science CiNii Research
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work
A newly developed single BCC phase 30Nb5Ta30Ti15V20Zr refractory high entropy alloy (RHEA) has been designed for low density, high mechanical properties, and superior fretting wear resistance. In this study, we focus on the study of the fretting wear resistance in a comparison with Ti6Al4V alloy. The 30Nb5Ta30Ti15V20Zr demonstrated the better fretting wear resistance with low friction coefficient and wear loss. The phase constituent, crystal structure and mutual interaction of complex composition in 30Nb5Ta30Ti15V20Zr contribute to improving the fretting wear resistance. The superior fretting wear resistance increases candidacy potential of the 30Nb5Ta30Ti15V20Zr RHEA for structural applications, especially under fretting conditions.
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Furuya Yuki, Konuma Seiji, Hasegawa Makoto
Surface and Coatings Technology 458 2023.3
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Science SA Joint Work
In this study, the aerosol deposition process was used to deposit the alpha-Al2O3 coating on Mo substrate under various conditions, i.e., particle size, type of carrier gas, gas flow rate and a nozzle-substrate distance. The formation behaviors of the alpha-Al2O3 coating in terms of deposition rate, microstructure and texture were studied in a correlation with the kinetic energy of the particles forming the coating. The fully dense and crystalline alpha-Al2O3 coatings were observed with the average grain size of 20 nm, significantly smaller than the particle sizes of 0.14 and 1.0 mu m. The coating layers under all conditions were examined with a fiber texture with the (0001) plane tilted about 15 degrees away from the coating plane. The microstructure and texture formation were resulted by fragmentation and plastic deformation of the particles during the deposition. The deposition formation of the particle collisions with the coating was simulated by the finite element analysis with the fragmentation model. The model suggested that the particles fracture at the boundary of the maximum shear strain generated by the particle impact. The deposit is formed by the lower part of the fracture particle. The strain energy in the deposited area of retained particles is considered to be equivalent to the kinetic energy, which includes the effects of the particle characteristics and physical properties. The result indicated that the changes of the deposition rate and texture formation can be well explained as a function of the strain energy. Regardless of the strain energy, the density of the alpha-Al2O3 coatings was almost the same as that of the bulk alpha-Al2O3 material. It was found that the high strain energy can lead to both high deposition rate and high indentation hardness.
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Hasegawa Makoto, Shibuya Toshiki, Iuchi Atsuhisa, Mizuno Taisuke
MATERIALS TRANSACTIONS 63 ( 11 ) 1567 - 1575 2022.11 [Reviewed]
DOI Web of Science CiNii Research
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本金属学会 Joint Work
<p>Optimal deposition parameters for the aerosol deposition of a β-SiAlON coating and the microstructure change of an EBC after heat exposure in air are investigated. Dense and crystalline SiAlON coating having developed texture, where the (0001) plane is declined approximately 10° from the coating plane is formed. The deposition rate increases with the gas flow rate when the rate is ranging from 12 to 16 L/min. Further increase of the gas flow rate decreases the deposition rate. Regarding the 15 µm thick mullite coating deposited on SiAlON substrate heat exposed at 1573 K over 30 h, delamination of the coating occurs due to the oxidation of SiAlON. 30 µm thick mullite coating prevents the oxidation. As for the EBC deposited on Si–SiC substrate, delamination occurs at Si–SiC/SiAlON interface by the oxidation of SiC during heat exposure at 1573 K. At the bonded region during heat exposure, SiAlON prevents the mullite coating to become (SiO<sub>2</sub>+mullite) two-phase state by supping Al to the mullite. Residual Si at the substrate moves to SiAlON and mullite coating under heat exposure at 1673 K. Structure of EBC is maintained by using SiC substrate in which the Si will not move to the coating during exposure.</p><p> </p><p>This Paper was Originally Published in Japanese in J. Japan Thermal Spray Soc. <b>57</b> (2020) 88–96.</p>
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Koide Noriatsu, Marumo Tomoki, Arai Yutaro, Hasegawa Makoto, Nishimura Toshiyuki, Inoue Ryo
JOURNAL OF MATERIALS SCIENCE 57 ( 42 ) 19785 - 19798 2022.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Thirathipviwat Pramote, Nozawa Sega, Furusawa Moe, Onuki Yusuke, Hasegawa Makoto, Matsumoto Katsush … Show more authors
Thirathipviwat Pramote, Nozawa Sega, Furusawa Moe, Onuki Yusuke, Hasegawa Makoto, Matsumoto Katsushi, Sato Shigeo Hide authors
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 855 2022.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Marumo Tomoki, Koide Noriatsu, Arai Yutaro, Nishimura Toshiyuki, Hasegawa Makoto, Inoue Ryo
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 42 ( 13 ) 5208 - 5219 2022.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Furuya Yuki, Tanaka Makoto, Kitaoka Satoshi, Hasegawa Makoto
SURFACE & COATINGS TECHNOLOGY 443 128616 2022.8 [Reviewed]
DOI Web of Science CiNii Research
Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Science SA Joint Work
Understanding coating by aerosol deposition requires knowledge of the kinetic energy of particles colliding with the substrate. In this study, the velocity of alpha-Al2O3 particles in a He or N2 carrier gas was derived from the maximum impact pressure on the substrate by the Rankine-Hugoniot relations, referred to as the impact-pressure method. The impact pressure distribution was measured using a pressure-sensitive film to provide the twodimensional particle velocity. From the pressure distribution, it was found that the particle in the gas flow from the center of the nozzle and from near the edge of the nozzle have almost the same impact velocity. A correction factor was required to determine the correct impact pressure from the pressure-sensitive film. The correction factor, determined based on the Knudsen number and the measured impact pressure, was in the range between 1.9 and 4.0.
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Fukutomi Hiroshi, Okayasu Kazuto, Onuki Yusuke, Hasegawa Makoto, Kobayashi Equo, Strnadel Bohumir, … Show more authors
Fukutomi Hiroshi, Okayasu Kazuto, Onuki Yusuke, Hasegawa Makoto, Kobayashi Equo, Strnadel Bohumir, Umezawa Osamu Hide authors
MATERIALS TRANSACTIONS 63 ( 2 ) 148 - 156 2022.2 [Reviewed]
DOI Web of Science CiNii Research
Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本金属学会 Joint Work
<p>The relationship between the mechanism of high temperature deformation and the evolution behavior of microstructure and the texture during deformation, which has been found in various solid solution alloys, is clarified. It is shown that the preferential dynamic grain growth (PDGG) mechanism proposed by the authors can explain the behavior of microstructure change as well as texture change of all studied alloys without contradiction. The essential aspect of the PDGG mechanism is the preferential growth of crystal grains with the orientation stable for deformation and with low Taylor factor in the given deformation mode. It is concluded that the Taylor factor corresponds to dislocation density and stored energy during the high temperature deformation of solid solution alloys when viscous glide of dislocations is the rate controlling process. The possibility of the occurrence of the PDGG mechanism in materials other than solid solution alloys is also discussed.</p>
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Fukutomi Hiroshi, Suzuki Shigeru, Nakajima Itaru, Okayasu Kazuto, Hasegawa Makoto, Onuki Yusuke
Tetsu-to-Hagane 107 ( 4 ) 312 - 320 2021.4 [Reviewed]
DOI Web of Science CiNii Research
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Iron and Steel Institute of Japan Joint Work
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Formation mechanism of texture in alpha-alumina coatings produced by aerosol deposition
Hasegawa Makoto, Komuro Masahiro, Kimura Kyonosuke, Hashimoto Soma, Tanaka Makoto, Kitaoka Satoshi, … Show more authors
Hasegawa Makoto, Komuro Masahiro, Kimura Kyonosuke, Hashimoto Soma, Tanaka Makoto, Kitaoka Satoshi, Kagawa Yutaka Hide authors
Journal of the Ceramic Society of Japan 129 ( 1 ) 7 - 16 2021.1 [Reviewed]
DOI Web of Science CiNii Research
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本セラミックス協会 Joint Work
<p>To investigate the texture formation mechanism in aerosol deposition (AD), coatings were deposited under various conditions using pure α-Al<sub>2</sub>O<sub>3</sub> powder particles. The deposition rate increased with increasing gas flow rate when the gas flow rate was in the range from 6 to 30 L/min. Furthermore, the deposition rate increased with increasing substrate heating temperature. No large difference in the microstructure of the α-Al<sub>2</sub>O<sub>3</sub> coating was observed. The formed α-Al<sub>2</sub>O<sub>3</sub> coatings was fully dense and crystalline. X-ray diffraction analysis of the coating surfaces revealed specific textures. A texture with (0001) planes tilted approximately 15° from the coating plane was detected in the as-deposited specimen at a nozzle angle of 90°. Whether the nozzle angle was 90 and 60°, almost the same texture was formed indicating that the shear force does not contribute to texture formation. Texture formation was due to plastic deformation of the α-Al<sub>2</sub>O<sub>3</sub> powder during collisions with the substrate. This is thought to be due to activation of basal and pyramidal slip systems. When the substrate was heated during AD, the texture changed to a (0001) fiber texture where the (0001) planes were parallel to the coating surface. The change in texture during substrate heating can be explained by a change in the critical resolved shear stress for the slip systems. The authors have previously reported that (0001) fiber texture has formed when the specimen was heat treated after the coating was deposited at room temperature. However, the mechanism of (0001) fiber texture formation by heat treatment is different form this research. During heat treatment, the texture is formed by the preferential growth of grains having (0001) plane at the surface of the coating.</p>
Other Link： https://ci.nii.ac.jp/naid/130007965513
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エアロゾルデポジション法により作製したモデル環境バリアコーティングの大気熱曝露による組織変化
長谷川誠，渋屋俊貴，井内敦久，水野泰輔
溶射技術 40 ( 1 ) 58 - 67 2020.8
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：産報出版（株） Joint Work
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Formation of Mullite Coating by Aerosol Deposition and Microstructural Change after Heat Exposure
T. Shibuya, T. Mizuno, A. Iuchi, M. Hasegawa
MATERIALS TRANSACTIONS 61 ( 3 ) 540 - 547 2020.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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轟 直人, 趙 研, 圓谷 貴夫, 寺西 亮, 寺本 武司, 永井 崇, 長岡 亨, 長谷川 誠, 本間 智之
まてりあ 59 ( 8 ) 434 - 434 2020
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本金属学会 Joint Work
Other Link： https://ci.nii.ac.jp/naid/130007883141
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HASEGAWA Makoto, SHIBUYA Toshiki, IUCHI Atsuhisa, MIZUNO Taisuke
Journal of Japan Thermal Spray Society 57 ( 2 ) 88 - 96 2020
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Thermal Spray Society Joint Work
Optimal deposition parameters for the aerosol deposition of a β-SiAlON coating and the microstructure change of an EBC after heat exposure in air are investigated. Dense and crystalline SiAlON coating having developed texture, where the (0001) plane is declined approximately 10° from the coating plane is formed. The deposition rate increases with the gas flow rate when the rate is ranging from 12 to 16 L/min. Further increase of the gas flow rate decreases the deposition rate. Regarding the 15 μm thick mullite coating deposited on SiAlON substrate heat exposed at 1573 K over 30 h, delamination of the coating occurs due to the oxidation of SiAlON. 30 μm thick mullite coating prevents the oxidation. As for the EBC deposited on Si-SiC substrate, delamination occurs at Si-SiC/SiAlON interface by the oxidation of SiC during heat exposure at 1573 K. At the bonded region during heat exposure, SiAlON prevent the mullite coating to become (SiO<SUB>2</SUB>+mullite) two-phase state by supplying Al to the mullite. Residual Si at the substrate move to SiAlON and mullite coating under heat exposure at 1673 K. Structure of EBC is maintained by using SiC substrate in which the Si will not move to the coating during exposure
Other Link： https://ci.nii.ac.jp/naid/130007871520
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Texture Evolution of Nickel Coatings Fabricated by Aerosol Deposition
Hasegawa Makoto, Kimura Kyonosuke, Aoki Koichiro, Komuro Masahiro
MATERIALS TRANSACTIONS 60 ( 11 ) 2305 - 2310 2019.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人 日本金属学会 Joint Work
<p>In order to understand the evolution of texture during the aerosol deposition (AD) method, coatings were deposited under various conditions using pure nickel powder particles. These particles are thought to undergo plastic deformation during deposition. X-ray diffraction analyses of the surfaces of the coatings obtained revealed specific textures. A {101} fiber texture was observed in as-deposited specimens. Texture development was observed with increasing gas flow rate. The strain in the nickel coating was estimated to be about 1.0–1.4 in true strain. This strain is thought to be induced by the nickel particles impacting the substrate during deposition.</p>
Other Link： https://ci.nii.ac.jp/naid/130007733050
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Fukutomi Hiroshi, Park Hyung-Gyun, Kim Kwon-Hoo, Okayasu Kazuto, Hasegawa Makoto, Umezawa Osamu
Journal of the Japan Institute of Metals and Materials 83 ( 8 ) 264 - 272 2019.8 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Institute of Metals and Materials Joint Work
<p>The effects of pre-existent textures on the evolution behaviors of microstructure and texture at high-temperature plane strain compression deformation of AZ31B magnesium alloy have been studied. Deformation is conducted at 723 K with a strain rate of 5.0 × 10<sup>−2</sup> s<sup>−1</sup>, up to −1.3 in true strain. When non-basal slip systems are the primary slip systems, {11<span style="text-decoration: overline;">2</span>0}<10<span style="text-decoration: overline;">1</span>0> texture develops. In this case, repeated change in microstructure and texture which was found in the previous work appeared with increasing strain. Namely, replacement of {11<span style="text-decoration: overline;">2</span>0}<10<span style="text-decoration: overline;">1</span>0> texture with {10<span style="text-decoration: overline;">1</span>0}<11<span style="text-decoration: overline;">2</span>0> texture and the reverse phenomenon occurs. While the {11<span style="text-decoration: overline;">2</span>0}<10<span style="text-decoration: overline;">1</span>0> oriented grains are small and with wavy shaped grain boundaries, the {10<span style="text-decoration: overline;">1</span>0}<11<span style="text-decoration: overline;">2</span>0> oriented grains are large and with rather straight grain boundaries. The mechanism of repeated change in microstructure and texture is discussed on the basis of preferential dynamic grain growth mechanism proposed by the authors.</p>
Other Link： https://ci.nii.ac.jp/naid/130007665756
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Microstructural Change and Fracture Behavior under Different Heat Exposure Conditions on Thermal Barrier Coatings Deposited on TiAl Intermetallic Compound
M. Hasegawa, K. Hirata, I. Dlouhý
Key Engineering Materials 810 27 - 33 2019.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Effect of Heat Treatment at (β+γ) Two Phase Region on Fracture Toughness in TiAl Intermetallic Compound
M. Hasegawa, I. Tomohiro, I. Dlouhý
Key Engineering Materials 810 21 - 26 2019.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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High-temperature creep of a CoNiCrAlY bond coat alloy
F. Dobeš, P. Dymáček, M. Iwashita, M. Hasegawa
Materials Science and Engineering A 759 272 - 277 2019.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Formation of Mullite Coating by Aerosol Deposition and Microstructure Change after Heat Exposure
Shibuya Toshiki, Mizuno Taisuke, Iuchi Atsuhisa, Hasegawa Makoto
Journal of the Japan Institute of Metals and Materials 83 ( 6 ) 186 - 192 2019.6 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Institute of Metals and Materials Joint Work
<p>In this study, the optimal parameters for aerosol deposition (AD) of mullite coating and the microstructure change of mullite coating after heat exposure in an air were investigated. Mullite, which is one of the component materials for environmental barrier coatings was deposited on glass, Al<sub>2</sub>O<sub>3</sub> and Si by AD method. In order to produce a homogeneous mullite coating, the angle of the gas flow direction from the nozzle to the substrate plane should be 60°. Deposition rate increased with increasing gas flow rate, when the gas flow rate was in the range from 18 to 36 L/min. Further increase of the gas flow rate resulted in the formation of heterogeneous coating. The mullite coating formed by the optimized parameters was almost dense and crystalline. The chemical composition of the mullite coating was almost the same as the composition of the mullite raw powder used for the deposition. The coating was composed of mullite single phase. Delamination was not observed at the interface between the Si substrate and the mullite coating. Since the interface showed undulation, it was considered that the substrate and the coating were bonded due to the anchor effect. Heat exposure was carried out at 1573 K in a specimen in which the mullite coating was deposited on the Si substrate. When the specimen was heat exposed for 10 h, coating at the surface side and the coatings at the central part and near the interface between the substrate and the coating were composed of (Al<sub>2</sub>O<sub>3</sub> + mullite) and (SiO<sub>2</sub> + mullite) two-phase state, respectively. Further heat exposure formed an altered layer near the interface. The layer was composed of (SiO<sub>2</sub> + mullite) two-phase state containing more than 80 mol% of SiO<sub>2</sub>. The thickness of the layer increased with increasing heat exposure time. Formation of the altered layer was due to the diffusion of Al present in the mullite coating to the coating surface and the diffusion of Si into the coating from the Si substrate.</p>
Other Link： https://ci.nii.ac.jp/naid/130007631015
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Microstructure evolution under high temperature deformation of CoNiCrAlY bond coat alloy
M. Hasegawa, M. Iwashita, Y. Kubota, P. Dymáček, F. Dobeš
Materials Science and Engineering A 756 237 - 247 2019.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Fracture toughness of a lamellar orientation-controlled TiAl-based alloy processed by either one-step or two-step compression at high temperature
K. Sakurai, L. Stratil, I. Dlouhy, H. Fukutomi
Materials Science and Engineering A 721 303 - 310 2018 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Fracture Toughness of Massively Transformed and Subsequently Heat Treated TiAl Intermetallic Compound
K. Sakurai, M. Hasegawa, I. Dlouhy
Key Engineering Materials 741 25 - 30 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Crack Resistance Characterization in TiAl Intermetallics Showing Enhanced Toughness
I. Dlouhy, L. Stratil, H. Fukutomi, M. Hasegawa
Key Engineering Materials 741 13 - 18 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Structural stabilization of EBC with thermal energy reflection at high temperatures
M. Tanaka, S. Kitaoka, M. Yoshida, O. Sakurada, M. Hasegawa, K. Nishioka and Y. Kagawa
Journal of the European Ceramics Society 37 ( 13 ) 4155 - 4161 2017 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Park Hyung-Gyun,Kim Kwon-Hoo,OKAYASU Kazuyo,HASEGAWA Makoto,FUKUTOMI Hiroshi
Journal of Japan Institute of Metals 80 ( 10 ) 612 - 619 2016.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jinstmet/80/10/80_J2016011/_article/-char/ja/
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Texture development of α-Al2O3 ceramic coatings by aerosol deposition
M. Hasegawa, K. Akiyama, Y. Oki, M. Tanaka, S. Kitaoka and Y. Kagawa
Materials Transactions 57 ( 10 ) 1714 - 1719 2016.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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Effects of heat exposure time and temperature on the delamination behavior of air plasma-sprayed thermal barrier coatings under shear loading
M. Hasegawa, T. Endo and H. Fukutomi
Materials Transactions 57 ( 7 ) 1138 - 1146 2016.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN INST METALS Joint Work
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Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam
P. Gavendová, J. Čížek, J. Čupera, M. Hasegawa, I. Dlouhý
Procedia Materials Science 12 89 - 94 2016.4 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：ELSEVIER Joint Work
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Delamination property of modeled air plasma sprayed-thermal barrier coatings under shear loading: effect of difference in chemical composition of bond coat
M. Hasegawa, S. Yamaoka
Procedia Materials Science ( 12 ) 83 - 88 2016.4 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：ELSEVIER Joint Work
In order to understand the effect of the difference in chemical composition and microstructure of bond coat (BC) layer on delamination properties, pushout tests were performed on modeled air plasma-sprayed thermal barrier coatings (APS-TBCs). Nickel-platinum-aluminides (Ni-Pt-Al), hafnium modified nickel-platinum-aluminides (Ni-Pt-Al-Hf) and NiCoCrAlY alloys were used as BC alloy. Hafnium and aluminum oxide were formed in needle like shape when the Ni-Pt-Al-Hf alloy was used. Vickers hardness of BC alloy decreased up to 50 hours heat exposure and then increased with increasing heat exposure time. Interfacial delamination toughness increased and then decreased with the increase in heat exposure time. (C) 2016 Published by Elsevier Ltd.
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Microstructural control of Ti-46Al-7Nb-0.7Cr-0.2Ni-0.1Si alloy by heat treatment
M. Hasegawa, T. Nomura, H. Haga, I. Dlouhy, H. Fukutomi
International Journal of Materials Research 105 ( 11 ) 1075 - 1083 2014.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：CARL HANSER VERLAG Joint Work
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HASEGAWA Makoto,OKI Yosuke
Journal of Japan Institute of Metals 78 ( 5 ) 195 - 200 2014.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jinstmet/78/5/78_J2013066/_article/-char/ja/
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The Role of Microstructure in Fracture Resistance Control of TiAl Based Intermetallics
I. Dlouhy, H. Haga, Z.Chlup, H. Hadaraba, M. Hasegawa and H. Fukutomi
Proceedings of the grant workshop on New Methods of Damage and Failure Analysis of Structural Parts 193 - 201 2012
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Effect of Microstructure Change on The Crack Formation of Heat Treated Ti-Al Intermetallic Compound
M. Hasegawa, T. Nomura, H. Haga, I. Dlouhy and H. Fukutomi
Proceedings of the grant workshop on New Methods of Damage and Failure Analysis of Structural Parts 185 - 192 2012
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Analysis of Microstructure Formation Process in Cu-Al Alloy During High Temperature Deformation Based on Texture Measurement
Masahiko Kinoshita, Makoto Hasegawa, Kazuto Okayasu, HIroshi Fukutomi
Journal of Japan Institute of Copper 51 ( 1 ) 296 - 301 2012 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Copper Joint Work
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Manufacturing of A1050-A6061 functionally graded porous aluminum
HANGAI Yoshihiko,OBA Yutaro,KOYAMA Shinji,HASEGAWA Makoto,UTSUNOMIYA Takao
Journal of the Japan Society of Mechanical Engineers 77 ( 779 ) 1021 - 1024 2011 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society of Mechanical Engineers Joint Work
Other Link： https://www.jstage.jst.go.jp/article/kikaia/77/779/77_779_1021/_article/-char/ja/
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UTSUNOMIYA Takao,ISHII Nobuyuki,HANGAI Yoshihiko,KOYAMA Shinji,HASEGAWA Makoto,KUWAZURU Osamu,YOSHI … Show more authors
UTSUNOMIYA Takao,ISHII Nobuyuki,HANGAI Yoshihiko,KOYAMA Shinji,HASEGAWA Makoto,KUWAZURU Osamu,YOSHIKAWA Nobuhiro Hide authors
Journal of the Japan Society of Mechanical Engineers 77 ( 779 ) 1013 - 1016 2011 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society of Mechanical Engineers Joint Work
Other Link： https://www.jstage.jst.go.jp/article/kikaia/77/779/77_779_1013/_article/-char/ja/
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Effect of microstructure change on cracking behavior in heat treated Ti-Al-V alloy
Hasegawa, Makoto; Nomura, Takuya; Fukutomi, Hiroshi
Journal of Japan Institute of Metals 74 ( 7 ) 481 - 483 2010.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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HASEGAWA Makoto,HIROSAKI Yurika,FUKUTOMI Hiroshi
Journal of Japan Institute of Metals 74 ( 7 ) 475 - 480 2010.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jinstmet/74/7/74_7_475/_article/-char/ja/
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Manufactureing of functionally graded porous aluminum of dissimilar aluminum alloy
HANCAI Yoshihiko,KOYAMA Shinji,UTSUNOMIYA Takao,HASEGAWA Makoto
Journal of Japan Institute of Metals 74 ( 4 ) 285 - 287 2010.4 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jinstmet/74/4/74_4_285/_article/-char/ja/
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Y. Hangai, Y. Ozeki, S. Kawano, T. Utsunomiya, O. Kuwazuru, M. Hasegawa, S. Koyama and N. Yoshikawa
Materials Transactions 51 ( 3 ) 548 - 552 2010.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/matertrans/51/3/51_MBW200921/_article
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HANCAI Yoshihiko,KOYAMA Shinji,UTSUNOMIYA Takao,HASEGAWA Makoto
Journal of Japan Institute of Metals 74 ( 2 ) 131 - 133 2010.2 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/jinstmet/74/2/74_2_131/_article/-char/ja/
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Effect of Tool Rotating Rate on Foaming Properties of Porous Aluminum Fabricated by using Friction Stir Processing
Y. Hangai,T. Utsunomiya and M. Hasegawa
Journal of Materials Processing Technology 210 ( 2 ) 288 - 292 2010.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Fabrication of Aluminum Foam/Dense Steel Composite by Friction Stir Welding
Y. Hangai, S. Koyama, M. Hasegawa and T. Utsunomiya
Metallurgical and Materials Transactions A 41 ( 9 ) 2184 - 2186 2010 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER Joint Work
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Interfacial Fracture Toughness in Air Plasma-Sprayed Thermal Barrier Coating Systems under Shear Loading Condition
M. Hasegawa and H. Fukutomi
Proceedings of the grant workshop on New Methods of Damage and Failure Analysis of Structural Parts 199 - 205 2010
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Effect of Microstructure Change of APS-TBCs on the Interfacial Mechanical Property Under Shear Loading
M. Hasegawa and H. Fukutomi
Proceedings of the 34th International Conference & Exposition on Advanced Ceramics & Composites 67 - 73 2010 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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The effect of microstructure change of bond coat layer in air plasma-sprayed thermal barrier coating system on interfacial mechanical property under shear loading
M,Hasegawa,T.Endo,H.Fukutomi
J. Japan Inst. Metals 73 ( 10 ) 802 - 808 2009.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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Lamellar Orientation Control in TiAl Base Alloy by a Two-step Compression Process at High Temperature
M. Hasegawa, H. Fukutomi
Materials Science and Engineering A 508 ( 1-2 ) 106 - 113 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Texture Development of Ca3Co4O9 Thermoelectric Oxide by High Temperature Plastic Deformation and Its Contribution to the Improvement in Electric Conductivity
H. Fukutomi, Y. Konno, K. Okayasu, M. Hasegawa and H. Nakatsugawa
Materials Science and Engineering A 527 ( 1-2 ) 61 - 64 2009 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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The Influence of Oxide Interphases on the Toughness of the Interface Between α-Al2O3 and Ni(Al) Intermetallic
M. Hasegawa, N. Cao, Y Kagawa, M. Rühle and A.G. Evans
Journal of The American Ceramic Society 91 ( 11 ) 3603 - 3607 2008 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY Joint Work
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Compressive Creep Property of Orientation Controlled Ti-43mol%Al Intermetallic Compound with Lamellar Microstructure
M. Hasegawa, Y. Hirosaki and H. Fukutomi
Proceedings of the grant workshop on New Methods of Damage and Failure Analysis of Structural Parts 201 - 206 2008
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Fracture Behavior and Interfacial Fracture Toughness in Air Plasma Sprayed Thermal Barrier Coating Systems
M. Hasegawa, T. Endo and H. Fukutomi
Proceedings of the grant workshop on New Methods of Damage and Failure Analysis of Structural Parts 207 - 213 2008
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Detection of Micro-Damage Evolution of Air-Plasma-Sprayed Thermal Barrier Coating through TGO Stress Measurement
M. Tanaka, M. Hasegawa and Y. Kagawa
Materials Transactions 47 ( 10 ) 2512 - 2517 2006.10 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：JAPAN INST METALS Joint Work
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Crack Growth and Delamination of Air Plasma-Sprayed Y2O3-ZrO2 TBC after Formation of TGO Layer
M. Hasegawa, Y. F. Liu and Y. Kagawa
Proceedings of the 30th Annual Cocoa Beach Conference & Exposition on Advanced Ceramics & Composites 2006 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Microstructural and Mechanical Properties Changes of a NiCoCrAlY Bond Coat with Heat Exposure Time in Air Plasma-Sprayed Y2O3-ZrO2 TBC Systems
M. Hasegawa, Y. Kagawa
International Journal of Applied Ceramic Technology 3 ( 4 ) 293 - 301 2006 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：BLACKWELL PUBLISHING Joint Work
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Decohesion Behavior in Copper-Sapphire Interface under Mode I Cyclic Loading
M. Hasegawa and Y. Kagawa
Materials Science and Engineering A 417 ( 1-2 ) 158 - 165 2006 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Measurement of Residual Stress in Air Plasma-Sprayed Y2O3-ZrO2 Thermal Barrier Coating System using Micro-Raman Spectroscopy
M. Tanaka, M, Hasegawa, A.F. Dericioglu and Y. Kagawa
Materials Science and Engineering A 419 262 - 268 2006 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Shinmi, A., Hasegawa, M., Kagawa, Y., Kawamura, M.,Suemitsu, T.
Journal of the Japan Institute of Metals 2005 ( 1 ) 67 - 72 2005.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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Atomistic Study of Crack Propagation near the Cu (111)/Al2O3 (0001) Interface
S.V. Dmitriev, N. Yoshikawa, M. Hasegawa, M. Kohyama, S. Tanaka, Y. Kagawa
Proceedings of the 28th Annual Cocoa Beach Conference & Exposition on Advanced Ceramics & Composites 231 - 236 2004 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Formation Mechanism of Texture during Dynamic Recrystallization in γ-TiAl, Nickel and Copper Examined by Microstructure Observation and Grain Boundary Analysis Based on Local Orientation Measurements
M. Hasegawa, M. Yamamoto, H. Fukutomi
Acta Materialia 51 3939 - 3950 2003 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Effect of Metal Layer Thickness on the Decohesion of High Purity Copper-Sapphire Interfaces
M. Hasegawa, S.J. Zhu, Y. Kagawa and A.G. Evans
Acta Materialia 51 ( 17 ) 5113 - 5121 2003 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work
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Microstructure Evolution of Polycrystalline Pure Nickel during Static Recrystallization
M. Hasegawa, H. Fukutomi
MATERIALS TRANSACTIONS 43 ( 9 ) 2243 - 2248 2002.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/matertrans/43/9/43_9_2243/_article
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Microstructural Study on Dynamic Recrystallization and Texture Formation in Pure Nickel
M. Hasegawa, H. Fukutomi
MATERIALS TRANSACTIONS 43 ( 05 ) 1183 - 1190 2002.5 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
Other Link： https://www.jstage.jst.go.jp/article/matertrans/43/5/43_5_1183/_article
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Formation Mechanism of Microstructure during Static Recrystallization of Pure Nickel
M. Hasegawa, H. Fukutomi
Journal of the Japan Institute of Metals 2002 ( 01 ) 40 - 45 2002.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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Orientation Distribution in Dynamically Recrystallized Nickel
H. Fukutomi, M. Hasegawa, K. Okayasu
Mater. Sci. Forum 408-4 889 - 894 2002 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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M. Hasegawa, H. Fukutomi
Journal of the Japan Institute of Metals 65 ( 11 ) 1014 - 1022 2001.11 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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Texture Formation during Dynamic Recrystallization of Pure Nickel
H. Fukutomi,M. Hasegawa,M.Yamamoto
Journal of the Japan Institute of Metals 65 ( 02 ) 71 - 77 2001.2 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Institute of Metals Joint Work
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Mechanisms of Dynamic Recrystallization in Metals and Intermetallic Compounds
H. Fukutomi, M. Hasegawa
Proceedings of the 2001 International Symposium on Advanced Engineering 408-4 36 - 41 2001 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work