UMEZAWA Osamu

Affiliation

Faculty of Engineering, Division of Systems Research

Job Title

Professor

Research Fields, Keywords

極低温特性, Microstructure of Metals and Alloys, Fracture, 疲労, Deformation

Mail Address

E-mail address

Related SDGs




ORCID  https://orcid.org/0000-0003-0380-1885

The Best Research Achievement in the last 5 years 【 display / non-display

Education 【 display / non-display

  •  
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    1986.3

    Waseda University   Metallurgical Engineering   Graduated

Degree 【 display / non-display

  • Doctor of Engineering - Waseda University

Campus Career 【 display / non-display

  • 2017.4
     
     

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Systems Research   Professor  

  • 2006.4
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    2017.3

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Materials Science and Chemical Engineering   Professor  

  • 2001.11
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    2006.3

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Systems Research   Associate Professor  

  • 2019.4
     
     

    Concurrently   Yokohama National UniversityInstitute of Advanced Sciences   Center for Creation of Symbiosis Society with Risk   Professor  

  • 2019.4
    -
    2023.3

    Concurrently   Yokohama National UniversityFaculty of Engineering   Dean  

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External Career 【 display / non-display

  • 2022.4
     
     

     

  • 2019.1
    -
    2023.12

    Vysoká Škola Báňská - Technical University of Ostrava   Senior researcher  

  • 2001.4
    -
    2001.10

    National Institute for Materials Science   Senior Researcher  

  • 1996.4
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    2001.3

    National Institute for Metals, Sience and Technology Agency   Senior Researcher  

  • 1993.10
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    1995.3

    University of Cambridge   Department of Materials Science and Metallurgy   Visiting Fellow  

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Academic Society Affiliations 【 display / non-display

  • 2008.6
     
     
     

    日本熱処理技術協会

  • 2001.12
     
     
     

    Ecomaterials Forum

  • 1998.7
     
     
     

    Japan Institute for Light Metals

  • 1986.1
     
     
     

    Japan Institute for Metals

  • 1986.1
     
     
     

    The Iron and Steel Institute of Japan

Research Areas 【 display / non-display

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Material processing and microstructure control

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Mechanics of materials and materials

  • Environmental Science/Agriculture Science / Environmental load reduction and remediation

 

Research Career 【 display / non-display

  • Deformation and Fracture of Steels

    Project Year:

  • Deformation and Farcture of Titanium Alloys

    Grant-in-Aid for Scientific Research  

    Project Year:

  • Process and Materials Design in alloys

    The Other Research Programs  

    Project Year:

  • 表面硬化部材の疲労き裂形成

    Project Year:

Books 【 display / non-display

  • 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

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    Language:Japanese Book type:Scholarly book

  • Handbook of Ecomaterials

    Yoshikazu Shinohara and Osamu Umezawa( Role: Contributor)

    Springer International Publishing  ( ISBN:978-3-319-68254-9

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    Responsible for pages:961-966   Language:English Book type:Scholarly book

  • Handbook of Ecomaterials

    Osamu Umezawa, Yoshikazu Shinohara, and Kohmei Halada( Role: Contributor)

    Springer International Publishing  ( ISBN:978-3-319-68255-6

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    Responsible for pages:2261-2280   Language:English Book type:Scholarly book

  • Standard Microstructures Group 1: Carbon steel & cast irons

    Materials Technology Education Association( Role: Supervisor (editorial))

    Yamamoto Scientific Tool Laboratory 

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    Language:English Book type:Scholarly book

  • 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

    Amazon

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    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。

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Thesis for a degree 【 display / non-display

  • 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]

    DOI

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    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

  • Effects of vanadium addition on strain distribution, crack initiation and propagation during low-cycle fatigue test in ferrite and martensite dual-phase steel

    Norimitsu Koga, Akihiro Kaseya, Osamu Umezawa, Hiroshi Nakata, Shunsuke Toyoda

    ISIJ International   62 ( 10 )   2022.10

    DOI

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    Language:English   Publishing type:Research paper (scientific journal)   Single Work  

  • 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”

    Shuto Takayasu, Osamu Umezawa, Kazuya Hashimoto

    WEAR   502-503   204397   2022.8  [Reviewed]

    DOI

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Single Work  

  • Statistical Analysis of Influential Factors on the Stability of Retained Austenite in Low Alloy TRIP Steel

    Koga Norimitsu, Yamashita Takayuki, Ogawa Keisuke, Umezawa Osamu

    MATERIALS TRANSACTIONS   63 ( 5 )   693 - 702   2022.5  [Reviewed]

    DOI CiNii Research

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:公益社団法人 日本金属学会   Joint Work  

  • Deformation structure around a crack in γ’-Fe4N layer of nitrided extra-low carbon steel subjected to cyclic tensile test

    Norimitsu Koga, Kento Tanahara, Osamu Umezawa

    Metallurgical and Materials Transactions A   53 ( 4 )   1150 - 1155   2022.4  [Reviewed]

    DOI

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    Language:English   Publishing type:Research paper (scientific journal)   Joint Work  

  • Effects of crystallographic texture on subsurface fatigue crack generation in Ti-Fe-O alloy at low temperature

    Osamu Umezawa, Weibo Li

    ISIJ International   62 ( 3 )   593 - 601   2022.3  [Reviewed]

    DOI CiNii Research

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人 日本鉄鋼協会   Joint Work  

    <p>Subsurface microcracks developed in a groove-rolled and cold-swaged Ti–Fe–O alloy were characterized to clarify the generation of subsurface fatigue crack. In addition, the effects of crystallographic texture on subsurface crack initiation and growth were discussed. A considerable number of microcracks were detected in the <i>β</i> grains, <i>α</i> grains, and at the <i>α</i>-<i>β</i> interface. The microcracks in the <i>β</i> grains grew negligibly into the neighboring <i>α</i> grains along the basal plane. This was because these grains were oriented with their c-axis almost perpendicular to the loading axis. The {10 <span style="text-decoration: overline;">1</span>0}<sub><i>α</i></sub> fiber texture prevents the formation of basal facet and its growth on the basal plane. The stress concentration around the microcrack in the <i>β</i> grains could assist the growth of the microcrack into neighboring <i>α</i> grains along the prismatic plane (which is inclined to the loading axis at a suitable angle) or occasionally at a {10 <span style="text-decoration: overline;">1</span>0}<sub><i>α</i></sub> twist boundary. The {10 <span style="text-decoration: overline;">1</span>0}<sub><i>α</i></sub> fiber texture assisted microcrack growth, and thereby, formed aligned facets and yield longer microcrack length. The combination of the shear stress and opening stress on {10 <span style="text-decoration: overline;">1</span>0}<sub><i>α</i></sub> results in a Mode II or III microcrack and causes microcrack growth on the prismatic plane in the neighboring grain.</p>

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Review Papers 【 display / non-display

  • 高強度合金における高サイクル疲労き裂の形成とひずみ不整合との関わり

    梅澤修

    山陽特殊製鋼技報   28 ( 1 )   3 - 12   2021.6  [Reviewed]  [Invited]

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)   Single Work  

  • Review of the mechanical properties of high-strength alloys at cryogenic temperatures

    Osamu Umezawa

    Materials Performance and Characterization   10 ( 2 )   3 - 15   2021.3  [Reviewed]  [Invited]

    DOI

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    Language:English   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Single Work  

  • Microstructure and Phase Transformation in Heat Treatment of Steels

    UMEZAWA Osamu

    PLASTOS   4 ( 38 )   65 - 69   2021.2  [Reviewed]  [Invited]

    DOI CiNii Research

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Japan Society for Technology of Plasticity   Single Work  

  • 鉄鋼材料の熱処理で出現する組織:その歴史を振り返る

    梅澤 修, 守谷英明

    熱処理   58 ( 6 )   294 - 300   2018.12  [Reviewed]  [Invited]

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Joint Work  

  • 鉄鋼材料の疲労特性と熱処理

    梅澤 修

    MECHANICAL SURFACE TECH   43   38 - 40   2018.4

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)   Single Work  

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Industrial Property Rights 【 display / non-display

  • 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

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    Applicant:横浜国立大学

    Application no:2011-215240  Date applied:2011.9.29

    Country of applicant:Domestic  

  • 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

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    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  

  • Al-Si系合金の製法

    梅澤 修

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    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  

  • 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

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    Applicant:物質・材料研究機構

    Application no:2002-379104  Date applied:2002.12.27

    Country of applicant:Domestic  

  • 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

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    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  

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Awards 【 display / non-display

  • 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

  • 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

  • 里見賞

    2019.10   公益財団法人里見奨学会   極低炭素鋼表面の窒化化合物層組織の微細化と疲労き裂形成に及ぼす影響

    Individual or group name of awards:梅澤修

  • Best Structural Materials Paper

    2019.7   International Cryogenic Materials Conference  

    Individual or group name of awards:Norimitsu Koga, Weisi Zhang, Osamu Umezawa, Valentin Tschan, Jan Sas, Klaus-Peter Weiss

  • 論文賞

    2018.5   日本熱処理技術協会   ガス窒化処理したSCM435鋼の回転曲げ疲労強度に及ぼす表面化合物相の影響

    Individual or group name of awards:平岡 泰,石田暁丈,梅澤 修

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 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)

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    Grant type:Competitive

  • 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

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    Grant type:Competitive

Other external funds procured 【 display / non-display

  • 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

  • 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

  • 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

  • 疲労変形によりBCC鉄中の粒界近傍に形成するひずみ不整合とき裂発生モデルの解析

    2014.6 - 2016.5

    Private Foundations  鉄鋼研究振興助成

  • 炭酸カルシウムスケール付着を抑制する鋼の表面改質技術の開発

    2013.9 - 2016.2

    NEDO平成25年度地熱発電技術研究開発

    Investigator(s):盛田元彰

Presentations 【 display / non-display

  • A Subsurface fatigue crack generation model in near alpha titanium at low temperature

    Osamu Umezawa, Weibo Li

    Thermec 2018 

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    Event date: 2018.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue: Paris  

  • Growth of ecomaterials and eco-efficiency in major metallic structural materials

    Osamu Umezawa, Yoshikazu Shinohara, Kohmei Halada

    13th International Conference on Ecomaterials 2017 (ICEM13) 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Bangkok, Thailand  

  • 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— 

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    Event date: 2013.3

    Language:The in addition, foreign language   Presentation type:Oral presentation (invited, special)  

    Venue:東京  

  • Subsurface Crack Generation Under Rolling Contact Fatigue in Steels

    The First Symposium on Ecomaterials and Processing Technology 

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    Event date: 2012.10

    Language:The in addition, foreign language   Presentation type:Oral presentation (invited, special)  

  • Crack Growth Modeling Under Rolling Contact Fatigue

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    Event date: 2012.9

    Language:The in addition, foreign language   Presentation type:Oral presentation (general)  

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Preferred joint research theme 【 display / non-display

  • 多結晶金属の不均一変形とき裂発生モデリング

  • 不均一変形材料の疲労破壊

  • 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

  • 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 

  • 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 

  • 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 

  • 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 

  • 社会技術イノベーションのための材料技術研究の推進−YNU研究教育総合連携方式の開発−

    Cooperative Research within an affiliated university or institute  

    Project Year: 2011.4  -  2016.3 

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Charge of on-campus class subject 【 display / non-display

  • 2022   Fatigue of Metallic Materials

    Graduate school of Engineering Science

  • 2022   Steel: microstructure and metallurgy

    College of Engineering Science

  • 2022   Microstructure Control Studio

    Graduate school of Engineering Science

  • 2022   Advanced Materials Engineering

    Graduate school of Engineering Science

  • 2022   Leading-edge Materials Engineering

    Graduate school of Engineering Science

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Charge of off-campus class subject 【 display / non-display

  • 材料学特論II

    Institution:東海大学

  • 基礎結晶科学

    Institution:横浜市立大学

  • 材料設計と評価技術の最前線

    Institution:東京工業大学

  • 金属工学特別講義第一

    Institution:東京工業大学

  • 鉄と鋼の材料技術

    Institution:放送大学

 

Committee Memberships 【 display / non-display

  • 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

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    Committee type:Government 

  • 人事委員会

    2022.4  委員

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    Committee type:Other 

  • 神奈川工業技術開発大賞選考委員会

    2022.4 - 2022.12  委員

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    Committee type:Municipal 

  • 日本熱処理技術協会

    2021.6 - 2024.6  副会長

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    Committee type:Academic society 

  • 日本金属学会

    2020.5 - 2022.4  代議員

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    Committee type:Academic society 

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Social Contribution(Extension lecture) 【 display / non-display

  • 28th IFHTSE Congress

    2023.11

  • 15th International Conference on Ecomaterials

    2022.11

  • 9th New Methods of Damage and Failure Analysis of Structural Parts

    2022.9

  • "

    2022.3

  • "

    2021.3

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