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Affiliation |
Faculty of Engineering, Division of Systems Research |
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Job Title |
Professor |
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Research Fields, Keywords |
極低温特性, Microstructure of Metals and Alloys, Fracture, 疲労, Deformation |
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Mail Address |
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Related SDGs |
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UMEZAWA Osamu
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ORCID
The Best Research Achievement in Research Career 【 display / non-display 】
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【Published Thesis】 Microstructural evolution in Ti-37 mol%Nb alloy under uniaxial compression at high temperatures(Journal of Alloys and Compounds) 2021.08
【Published Thesis】 ISIJ International 2022.03
【Published Thesis】 Influence of dispersed β phase on local deformation pattern in mill-annealed Ti-Fe-O alloy under dwell fatigue loading(International Journal of Fatigue) 2021.11
The Best Research Achievement in the last 5 years 【 display / non-display 】
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【Published Thesis】 Fracture toughness and martensitic transformation in type 316LN austenitic stainless steel extra-thick plates at 4.2 K(Materials Science and Engineering A) 2023.01
【Published Thesis】 Tribofilm properties and microcrack morphologies for a carburized SCM420 steel under high-pressure rolling sliding contact fatigue with lubricants containing high sulfur- and phosphorus- additives”(WEAR) 2022.08
【Published Thesis】 ISIJ International 2022.03
【Published Thesis】 Influence of dispersed β phase on local deformation pattern in mill-annealed Ti-Fe-O alloy under dwell fatigue loading(International Journal of Fatigue) 2021.11
【Published Thesis】 Microstructural evolution in Ti-37 mol%Nb alloy under uniaxial compression at high temperatures(Journal of Alloys and Compounds) 2021.08
Education 【 display / non-display 】
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-1986.3
Waseda University Metallurgical Engineering Graduated
Degree 【 display / non-display 】
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Doctor of Engineering - Waseda University
Campus Career 【 display / non-display 】
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2017.4
Duty Yokohama National UniversityFaculty of Engineering Division of Systems Research Professor
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2006.4-2017.3
Duty Yokohama National UniversityFaculty of Engineering Division of Materials Science and Chemical Engineering Professor
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2001.11-2006.3
Duty Yokohama National UniversityFaculty of Engineering Division of Systems Research Associate Professor
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2023.4
Concurrently Yokohama National UniversityInstitute for Multidisciplinary Sciences Professor
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2019.4
Concurrently Yokohama National UniversityInstitute of Advanced Sciences Center for Creation of Symbiosis Society with Risk Professor
External Career 【 display / non-display 】
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2022.4
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2019.1-2023.12
Vysoká Škola Báňská - Technical University of Ostrava Senior researcher
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2001.4-2001.10
National Institute for Materials Science Senior Researcher
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1996.4-2001.3
National Institute for Metals, Sience and Technology Agency Senior Researcher
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1993.10-1995.3
University of Cambridge Department of Materials Science and Metallurgy Visiting Fellow
Academic Society Affiliations 【 display / non-display 】
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2008.6
日本熱処理技術協会
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2001.12
Ecomaterials Forum
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1998.7
Japan Institute for Light Metals
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1986.1
Japan Institute for Metals
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1986.1
The Iron and Steel Institute of Japan
Research Areas 【 display / non-display 】
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Nanotechnology/Materials / Structural materials and functional materials
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Nanotechnology/Materials / Material processing and microstructure control
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Mechanics of materials and materials
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Environmental Science/Agriculture Science / Environmental load reduction and remediation
Research Career 【 display / non-display 】
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Deformation and Fracture of Steels
Project Year：
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Deformation and Farcture of Titanium Alloys
Grant-in-Aid for Scientific Research
Project Year：
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Process and Materials Design in alloys
The Other Research Programs
Project Year：
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表面硬化部材の疲労き裂形成
Project Year：
Books 【 display / non-display 】
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金属組織観察のための検鏡試料の作り方
梅澤修（ Role： Supervisor (editorial)）
大河出版 （ ISBN:978-4-88661-818-4 ）
Language：Japanese Book type：Scholarly book
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Handbook of Ecomaterials
Yoshikazu Shinohara and Osamu Umezawa（ Role： Contributor）
Springer International Publishing （ ISBN:978-3-319-68254-9 ）
Responsible for pages：961-966 Language：English Book type：Scholarly book
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Handbook of Ecomaterials
Osamu Umezawa, Yoshikazu Shinohara, and Kohmei Halada（ Role： Contributor）
Springer International Publishing （ ISBN:978-3-319-68255-6 ）
Responsible for pages：2261-2280 Language：English Book type：Scholarly book
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Standard Microstructures Group 1: Carbon steel & cast irons
Materials Technology Education Association（ Role： Supervisor (editorial)）
Yamamoto Scientific Tool Laboratory
Language：English Book type：Scholarly book
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改訂版 金属組織の現出と試料作製の基本
材料技術教育研究会 (編集) （ Role： Contributor , 全編の編集と校正、および11章のEBSD分析および三次元化に必要な試料調整ついて解説した。）
大河出版 （ ISBN:9784886618177 ）
Total pages：303 Language：Japanese Book type：Scholarly book
編集代表者として全体の取りまとめと、11章「機器分析用研磨面作成の留意点」の11.4節「SEM-EBSD解析のための試料作製について」と11.5節「シリアルセクショニング法による三次元画像再構築」pp.285-290を分担執筆した。
Thesis for a degree 【 display / non-display 】
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高強度非磁性金属材料の極低温高サイクル疲労破壊の研究
梅澤 修
1992.10
Doctoral Thesis Single Work [Reviewed]
早稲田大学大学院理工学研究科 第1835号, 文部省 乙第901号
高強度非磁性金属材料であるチタン合金とオーステナイト鋼の高サイクル疲労をはじめとした極低温特性を評価するとともに、極低温高サイクル疲労破壊において顕在化する内部き裂発生に着目し、電子顕微鏡を用いて転位組織の発達と微小き裂および破面形成過程を詳細に解析し、高強度材料における不均一変形と組織依存によるき裂形成の基本的なモデルを提示した。
Papers 【 display / non-display 】
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Sato Yuya, Tachibana Shunichi, Nishiyama Takeshi, Madanbashi Rikiya, Umezawa Osamu, Tagawa Tetsuya
Tetsu-to-Hagane 110 ( 11 ) 871 - 879 2024.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Iron and Steel Institute of Japan Joint Work
<p>The effect of the manganese content of 7 % nickel-added steel on cryogenic toughness was investigated. When Charpy absorbed energy was investigated in the steels with wide range manganese content from 0.05 % to 2.16 %, the absorbed energy at −196 °C increased with a decrease of manganese content. The two steels with manganese contents of 0.2 % and 0.8 % were selected for use in a more detailed investigation regarding the dependence of toughness at −196 ℃ on the intermediate heat treatment temperature, fracture behaviors and the retained austenite. Although the 0.2 % manganese steel stably exhibited a high absorbed energy at −196 ℃ at all intermediate heat treatment temperatures examined in this work, it was necessary to select an appropriate intermediate heat treatment temperature for the 0.8 % manganese steel in order to achieve high absorbed energy at −196 ℃. The total amount of the retained austenite and the size and the nickel content locally segregated into an identical retained austenite were quantified by using XRD and SEM/EDS, and the characteristics of the retained austenite in the steels with low manganese alloy designs were investigated. The cleavage-type brittle fracture that appeared in some specimens was discussed from the viewpoint of the stability of retained austenite.</p>
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Strength and fracture toughness of type 304 and 316 austenitic stainless steels at 4.2 K
Takeru Sakurai, Osamu Umezawa, Yoshinori Ono
IOP Conference Series: Materials Science and Engineering 1302 012002 2024.7 [Reviewed]
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Single Work
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High-cycle fatigue strength of 22Cr-12Ni austenitic stainless steel at 77 K
Muhammad Edgar Bratasena, Tetsuya Kato, Osamu Umezawa, Yoshinori Ono, Masayuki Komatsu
IOP Conference Series: Materials Science and Engineering 1302 012001 2024.7 [Reviewed]
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Single Work
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{001}<101> texture evolution by preferential dynamic grain growth in Ti-37 mol%Nb alloy under plane strain compression at high temperatures
Umezawa Osamu, Hayakawa Yujiro, Schindler Ivo, Fukutomi Hiroshi
MATERIALS TRANSACTIONS 65 ( 3 ) 282 - 291 2024.3 [Reviewed]
Authorship：Lead author, Corresponding 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>{001}〈101〉 texture evolution in Ti–37 mol%Nb (Nb–46.5 mass%Ti) alloy was determined under plane strain compression at the temperatures of 800°C, 950°C, and 1100°C, in which preferential dynamic grain growth (PDGG) took place. At lower temperature and higher strain rate such as 800°C–10<sup>−2</sup>/s, almost no grain growth occurred in the transverse direction (TD), and the α-fiber + near {111}〈110〉 in the γ-fiber texture was developed, which was a stable orientation as deformation texture. At higher temperature and lower strain rate such as 1100°C–10<sup>−3</sup>/s, the grain growth along the TD remarkably appeared by grain boundary bulging, and an extremely high pole density of the texture near the α-fiber, especially the rotated cube {001}〈101〉, evolved. A planar dislocation structure with pile-ups appeared and individual dislocations were uniformly distributed in the grains. The rotated cube texture fulfills the conditions of the deformation stability and the low Taylor factor in accordance with the PDGG mechanism. The essential aspect of the mechanism is the preferential growth of grains with a stable orientation for deformation and a low Taylor factor in the given deformation mode.</p>
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High-strength and high-toughness austenitic stainless steels based on type 316LN at 4.2 K
Takeru Sakurai, Osamu Umezawa,
Cryogenics 136 103762 2023.12 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
Review Papers 【 display / non-display 】
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鋼の焼入性と合金元素〜合金鋼の焼入焼戻を知る基礎知識〜
梅澤修
熱処理技術セミナー（2024年度第3回） 1 - 8 2024.12
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Lecture material (seminar, tutorial, course, lecture, etc.) Single Work
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Crack generation in rolling-sliding contact fatigue for high strength martensitic steels
63 ( 11 ) 2024.11 [Reviewed] [Invited]
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
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鋼の焼入性と合金元素
梅澤修
熱処理技術セミナー（2023年度第3回） 1 - 8 2023.11
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Lecture material (seminar, tutorial, course, lecture, etc.) Single Work
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鋼の焼入焼戻しにおける合金元素の役割をみてみよう
梅澤修
金属 93 ( 6 ) 452 - 458 2023.6
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Single Work
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鋼の焼入性と合金元素
梅澤修
熱処理技術セミナー（2022年度第3回） 1 - 8 2022.11
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Lecture material (seminar, tutorial, course, lecture, etc.) Single Work
Industrial Property Rights 【 display / non-display 】
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チタン合金およびチタンからなる基体とその表面処理方法
梅澤 修
Applicant：横浜国立大学
Application no：2011-215240 Date applied：2011.9.29
Country of applicant：Domestic
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鋳物用アルミニウム合金
大澤嘉昭，高森 晋，皆川和己，垣澤英樹，梅澤 修，原田幸明
Applicant：物質・材料研究機構
Application no：2007-058303 Date applied：2007.3.8
Patent/Registration no：4551995 Date issued：2010.7.23
Country of applicant：Domestic
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Al-Si系合金の製法
梅澤 修
Applicant：よこはまティエルオー
Application no：2003-378043 Date applied：2003.11.7
Patent/Registration no：4103959 Date issued：2008.4.4
Country of applicant：Domestic
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アルミニウム系鋳造合金の凝固結晶組織を制御する方法
大澤嘉昭，高森 晋，皆川和己，垣澤英樹，梅澤 修，原田幸明
Applicant：物質・材料研究機構
Application no：2002-379104 Date applied：2002.12.27
Country of applicant：Domestic
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高燐鋼板製造装置及び高燐鋼板製造方法
中嶋 宏，高谷英明，梅澤 修，平田耕一
Applicant：三菱重工業
Application no：2001-280468 Date applied：2001.9.14
Patent/Registration no：3549000 Date issued：2004.4.30
Country of applicant：Domestic
Awards 【 display / non-display 】
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日本金属学会 論文賞
2023.9 日本金属学会 Preferential dynamic grain growth mechanism enabling the control of microstructure and texture by high temperature deformation: experimental evidence and applicability
Individual or group name of awards：福富洋志, 岡安和人, 小貫祐介, 長谷川誠, 小林郁夫, Bohumir Strnadel, 梅澤修
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International Science and Technology Awards 2022
2022.11 International Society for Science Network
Individual or group name of awards：Osamu Umezawa
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IAAM Scientist Medal
2022.10 Advanced Materials World Congress
Individual or group name of awards：Osamu Umezawa
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学術功績賞（林賞）
2020.6 一般社団法人 日本熱処理技術協会 ひずみ不整に起因するき裂形成機構と組織学的要因との関係解明
Individual or group name of awards：梅澤 修
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High Quality Paper Award
2019.11 The 25th Small Engine Technology Conference (SETC2019) Influence of Surface Compound Layer on Fatigue Strength of Nitrided Chromium Molybdenum Steel
Individual or group name of awards：Tsuyoshi Kubota, Osamu Umezawa
Grant-in-Aid for Scientific Research 【 display / non-display 】
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浸窒処理を用いた表面硬化部材の疲労き裂形成と硬化層組織との関係
2024.4 - 2027.3
Grant-in-Aid for Scientific Research(C)
Investigator(s)：梅澤修
Authorship：Principal investigator Grant type：Competitive
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極低温用構造材料厚肉材の高強度化と耐き裂形成に優れる金属組織制御法の開発
2021.4 - 2024.3
科学研究費補助金 Grant-in-Aid for Scientific Research(C)
Grant type：Competitive
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転位の集団運動とひずみ不整合に着目した内部疲労き裂形成の解明
2016.4 - 2019.3
科学研究費補助金 Grant-in-Aid for Scientific Research(C)
Investigator(s)：梅澤 修
Grant type：Competitive
Other external funds procured 【 display / non-display 】
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極限環境対応構造材料研究拠点
2022.10 - 2031.3
Ministry of Education, Culture, Sports, Science and Technology データ創出・活用型 マテリアル研究開発プロジェクト
Authorship：Coinvestigator(s)
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水素ガスを使った加圧ガス冷却式真空浸炭炉の開発
2021.10 - 2024.3
Ministry of Economy, Trade and Industry 令和3年度戦略的基盤技術高度化支援事業
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破壊に強い延性二相チタン合金の組織設計原理の確立
2020.4 - 2023.3
Private Foundations 研究プロジェクト
Authorship：Coinvestigator(s)
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鋼中炭素の存在状態評価と微小球反発硬さ試験法の適用開発
2019.4 - 2020.3
Private Foundations 単年度研究助成
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原型炉超伝導TFコイルに向けた極低温用構造材料の高強度化に関する研究開発
2018.11 - 2020.3
Other Ministries 委託研究
Investigator(s)：梅澤 修
Presentations 【 display / non-display 】
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A Subsurface fatigue crack generation model in near alpha titanium at low temperature
Osamu Umezawa, Weibo Li
Thermec 2018
Event date： 2018.7
Language：English Presentation type：Oral presentation (general)
Venue： Paris
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Growth of ecomaterials and eco-efficiency in major metallic structural materials
Osamu Umezawa, Yoshikazu Shinohara, Kohmei Halada
13th International Conference on Ecomaterials 2017 (ICEM13)
Event date： 2017.11
Language：English Presentation type：Oral presentation (invited, special)
Venue：Bangkok, Thailand
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グリーンモノづくりの課題とアジアの役割
第11回エコマテリアル国際会議プレシンポジウム—日本発のモノづくり：東南アジア（ベトナム）展開への期待—
Event date： 2013.3
Language：The in addition, foreign language Presentation type：Oral presentation (invited, special)
Venue：東京
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Subsurface Crack Generation Under Rolling Contact Fatigue in Steels
The First Symposium on Ecomaterials and Processing Technology
Event date： 2012.10
Language：The in addition, foreign language Presentation type：Oral presentation (invited, special)
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Crack Growth Modeling Under Rolling Contact Fatigue
Event date： 2012.9
Language：The in addition, foreign language Presentation type：Oral presentation (general)
Preferred joint research theme 【 display / non-display 】
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多結晶金属の不均一変形とき裂発生モデリング
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不均一変形材料の疲労破壊
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軽量・難加工金属の高付加価値化成形
Past of Collaboration and Commissioned Research 【 display / non-display 】
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極限環境対応構造材料研究拠点
Offer organization: 東北大学 Funded Research on Investiment
Project Year： 2022.10 - 2025.3
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破壊に強い延性二相チタン合金の組織設計原理の確立
Offer organization: 日本鉄鋼協会 Cooperative Research within Japan
Project Year： 2020.4 - 2023.3
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表面硬化部材の疲労損傷研究部会
Cooperative Research within Japan
Project Year： 2019.4 - 2022.3
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表面硬化部材の疲労損傷研究部会
Cooperative Research within Japan
Project Year： 2017.3 - 2019.3
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鉄鋼のミクロ組織要素と特性の量子線解析研究会
Offer organization: 日本鉄鋼協会 Others
Project Year： 2017.2 - 2020.1
Charge of on-campus class subject 【 display / non-display 】
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2024 International Internships in Materials Engineering
Graduate school of Engineering Science
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2024 Sub-research exercise in Materials Engineering
Graduate school of Engineering Science
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2024 Advanced Study in Materials Engineering
Graduate school of Engineering Science
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2024 Off-Campus Exercise in Materials Engineering
Graduate school of Engineering Science
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2024 Teaching Practice in Materials Engineering
Graduate school of Engineering Science
Charge of off-campus class subject 【 display / non-display 】
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材料学特論II
Institution：東海大学
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基礎結晶科学
Institution：横浜市立大学
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材料設計と評価技術の最前線
Institution：東京工業大学
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金属工学特別講義第一
Institution：東京工業大学
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鉄と鋼の材料技術
Institution：放送大学
Committee Memberships 【 display / non-display 】
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International Scientific Advisory Board of Materials and Technologies for Sustainable Development
2023.10
Committee type：Other
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International Scientific Advisory Board
2023.7
Committee type：Other
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Net Zero Initiative Scientific Advisory Board
2023.4 - 2026.3
Committee type：Other
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液化水素関連材料評価基盤の整備運営委員会
2022.4 委員長
Committee type：Government
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神奈川工業技術開発大賞選考委員会
2022.4 委員
Committee type：Municipal
Social Contribution(Extension lecture) 【 display / non-display 】
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28th IFHTSE Congress
2023.11
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15th International Conference on Ecomaterials
2022.11
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9th New Methods of Damage and Failure Analysis of Structural Parts
2022.9
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2022.3
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2021.3