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2010 Fiscal Year Annual Research Report

バルクナノメタルの材料設計

Planned Research

Project AreaBulk Nanostructured Metals -New Metallurgy of Novel Structural Materials
Project/Area Number 22102002
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Research InstitutionKyoto University

Principal Investigator

辻 伸泰  京都大学, 工学研究科, 教授 (30263213)

Co-Investigator(Kenkyū-buntansha) 宝野 和博  独立行政法人物資・材料研究機構, 磁性材料センター, フェロー (60229151)
波多 聡  九州大学, 総合理工学研究科(研究院), 准教授 (60264107)
戸高 義一  豊橋技術科学大学, 工学部, 准教授 (50345956)
上路 林太郎  香川大学, 工学部, 准教授 (80380145)
寺田 大将  京都大学, 工学研究科, 助教 (80432524)
柴田 曉伸  京都大学, 工学研究科, 助教 (60451994)
Keywords構造用金属材料 / 巨大ひずみ加工 / 超微細粒 / 相変態 / 結晶粒界 / 先端電子顕微鏡法 / 転位 / 双晶
Research Abstract

強度と延性・靭性の両立といった、従来の常識を打ち破る優れた特性を示すバルクナノメタルの最適材料設計概念を確立することが、本AO1(ア)計画研究班の目的である。本研究では、種々のプロセスにより作成されたバルクナノメタルの組織・構造をその特性と関連づけながら明らかにするとともに、粒界・界面だらけの材料であるバルクナノメタルからの相変態・析出現象や非平衡組織形成機構の解明を行う。初年度にあたる平成22(2010)年度は,実験装置の導入・作製などにより研究環境を整えると共に,バルクナノメタルの材料設計に通じる幅広い課題に対し、精力的に多くの実験研究を行った.具体的には、TEM内ナノ領域結晶方位解析システムを導入し、バルクナノメタルのナノスケール方位マッピングを可能とする環境を整えた。また、バルクナノメタル中の小角粒界における三次元転位組織の観察に初めて成功した。これらの先端的解析手法も用いながら、バルクナノメタルオーステナイト相からのマルテンサイト変態挙動の解明、バルクナノメタルにおける変形誘起室温粒成長などの特異な変形挙動を明らかにした。また、純チタンのHPT加工に伴う高圧相の安定化の詳細を明らかにするとともに、超微細粒組織を有する高マンガン鋼のεマルテンサイト変態挙動を初めて解明した。

  • Research Products

    (32 results)

All 2011 2010

All Journal Article (21 results) (of which Peer Reviewed: 21 results) Presentation (10 results) Book (1 results)

  • [Journal Article] Formation of Bimodal Grain Structures in High Purity Al by Reversal High Pressure Torsion2011

    • Author(s)
      Dmitry Orlov, Yoshikazu Todaka, Minoru Umemoto, Nobuhiro Tsuji
    • Journal Title

      Scripta Mater.

      Volume: 64 Pages: 498-501

    • Peer Reviewed
  • [Journal Article] Dynamic Deformation Behavior of Ultrafine Grained Iron Produced by Accumulative Roll Bonding and Annealing2011

    • Author(s)
      Y.Okitsu, N.Takata, N.Tsuji
    • Journal Title

      Scripta Mater.

      Volume: 64 Pages: 896-899

    • Peer Reviewed
  • [Journal Article] Development of Highly Cube Texture Nickel Superconductor Substrate Tapes by Accumulative roll Bonding (ARB)2011

    • Author(s)
      P.P.Bhattacharjee, N.Tsuji
    • Journal Title

      Int.J.Mater.Res.

      Volume: 102 Pages: 173-182

    • Peer Reviewed
  • [Journal Article] Fabrication of high strength Cu-NbC composite conductor by high pressure torsion2011

    • Author(s)
      B.D.Long, M.Umemoto, Y.Todaka, R.Othman, H.Zuhailawati
    • Journal Title

      Materials Science and Engineering A

      Volume: 528 Pages: 1750-1756

    • Peer Reviewed
  • [Journal Article] Anomalous Property Evolution during Annealing in HPTed SUS 304 Austenitic Stainless Steel2011

    • Author(s)
      I.Shuro, M.Umemoto, Y.Todaka, H.H.Kuo, H.Wang
    • Journal Title

      Materials Science Forum

      Volume: 667-669 Pages: 589-592

    • Peer Reviewed
  • [Journal Article] Stress-induced Martensitic Transformation Behaviors at Various Temperatures and their TRIP Effects in SUS304 Metastable Austenitic Stainless Steel2011

    • Author(s)
      N.Tsuchida, Y.Morimoto, T.Tonan, Y.Shibata, K.Fukaura, R.Ueji
    • Journal Title

      ISIJ International

      Volume: 51 Pages: 124-129

    • Peer Reviewed
  • [Journal Article] Change in Microstructures and Mechanical Properties during Deep Wire Drawing of Copper2010

    • Author(s)
      K.Hanazaki, N.Shigeiri, N.Tsuji
    • Journal Title

      Mater.Sci.Eng.A

      Volume: 527 Pages: 5699-5707

    • Peer Reviewed
  • [Journal Article] New Routes for Fabricating Ultrafine Grained Microstructures in Bulky Steels without Very High Strains2010

    • Author(s)
      N.Tsuji
    • Journal Title

      Adv.Eng.Mater.

      Volume: 12 Pages: 701-707

    • Peer Reviewed
  • [Journal Article] Change in Electrical Resistivity of Commercial Purity Aluminum Severely Plastic Deformed2010

    • Author(s)
      Y.Miyajima, S.Komatsu, M.Mitsuhara, S.Hata, H.Nakashima, N.Tsuji
    • Journal Title

      Phil.Mag.

      Volume: 90 Pages: 4475-4488

    • Peer Reviewed
  • [Journal Article] Mechanical Properties and Crash Worthiness of Ultrafine Grained Multi-Phase Steel Sheets2010

    • Author(s)
      Yoshitaka Okitsu, Tadashi Naito, Naoki Takaki, Tomoaki Sugiura, Nobuhiro Tsuji
    • Journal Title

      SAE Int.J.Mater.Manuf.

      Volume: 3 Pages: 237-245

    • Peer Reviewed
  • [Journal Article] Quantification of Internal Dislocation Density Using Scanning Transmission Electron Microscopy in Ultrafine Grained Pure Aluminum Fabricated by Severe Plastic Deformation2010

    • Author(s)
      Y.Miyajima, M.Mitsuhara, S.Hata, H.Nakashima, N.Tsuji
    • Journal Title

      Mater.Sci.Eng.A

      Volume: 528 Pages: 776-779

    • Peer Reviewed
  • [Journal Article] Cu/Zr Nanoscaled Multi-Stacks Fabricated by Accumulative Roll Bonding2010

    • Author(s)
      Y.F.Sun, N.Tsuji, H.Fujii, F.S.Li
    • Journal Title

      J.Alloys Comp.

      Volume: 504 Pages: S443-S447

    • Peer Reviewed
  • [Journal Article] Effect of Al additions on the age hardening response of the Mg-2.4Zn-0.1Ag-0.1Ca (at.%) alloy-TEM and 3DAP study2010

    • Author(s)
      C.L.Mendis, K.Oh-ishi, K.Hono
    • Journal Title

      Mat.Sci.Eng.A

      Volume: 527 Pages: 973-979

    • Peer Reviewed
  • [Journal Article] Effect of Zr addition on the mechanical properties of as-extruded Mg-Zn-Ca-Zr alloys2010

    • Author(s)
      T.Honma, C.L.Mendis, K.Hono, S.Kamado
    • Journal Title

      Mat.Sci.Eng.A

      Volume: 527 Pages: 2356-2362

    • Peer Reviewed
  • [Journal Article] Effect of Ga addition on the microstructure and magnetic properties of hydrogenation-disproportionation-desorption-recombination processed Nd-Fe-B powder2010

    • Author(s)
      H.Sepehri-Amin, W.F.Li, T.Ohkubo, T.Nishiuchi, S.Hirosawa, K.Hono
    • Journal Title

      Acta Mater.

      Volume: 58 Pages: 1309-1316

    • Peer Reviewed
  • [Journal Article] Towards the development of heat treatable high strength wrought Mg alloys2010

    • Author(s)
      K.Hono, C.L.Mendis, T.T.Sasaki, K.Oh-ishi
    • Journal Title

      Scripta Mater.

      Volume: 63 Pages: 710-715

    • Peer Reviewed
  • [Journal Article] Coercivity enhancement of HDDR-processed Nd-Fe-B permanent magnet by rapid hot-press consolidation process2010

    • Author(s)
      N.Nozawa, H.Sepehri-Amin, T.Ohkubo, K.Hono, T.Nishiuchi, S.Hirosaw
    • Journal Title

      J.Mag.Mag.Mater

      Volume: 323 Pages: 115-121

    • Peer Reviewed
  • [Journal Article] Microstructure and strain distribution in freestanding Si membrane strained by SixNy deposition2010

    • Author(s)
      H.Gao, K.Ikeda, S.Hata, H.Nakashima, D.Wang, H.Nakashima
    • Journal Title

      Materials Science and Engineering A

      Volume: 527 Pages: 6633-6637

    • Peer Reviewed
  • [Journal Article] Measurement of strain in freestanding Si/SixNy membrane by convergent beam electron diffraction and finite element method2010

    • Author(s)
      H.Gao, K.Ikeda, S.Hata, Hi.Nakashima, D.Wang, H.Nakashima
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 49 Pages: 090208

    • Peer Reviewed
  • [Journal Article] Ordering transformations in Ni75Mo15Mn10 alloy2010

    • Author(s)
      U.D.Kulkarni, S.Hata, M.Mitsuhara, K.Ikeda
    • Journal Title

      Transactions of The Indian Institute of Metals

      Volume: 63 Pages: 819-822

    • Peer Reviewed
  • [Journal Article] Effect of Si content on fracture behaviour change by strain rate in Si steels2010

    • Author(s)
      T.Mizuguchi, R.Oouchi, R.Ueji, Y.Tanaka, K.Shinagawa
    • Journal Title

      Mater.Sci.Forum

      Volume: 654-656 Pages: 1303-1306

    • Peer Reviewed
  • [Presentation] Strength and Electrical Conductivity of Ultrafine Grained Cu Fabricated by Giant Straining Processes2010

    • Author(s)
      N.Tsuji
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM 2010)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2010-11-20
  • [Presentation] Ways to Manage Both Strength and SDuctility in Nanostructured Steels2010

    • Author(s)
      N.Tsuji
    • Organizer
      International Conference on Advanced Steels 2010 (ICAS 2010
    • Place of Presentation
      Guilin, China
    • Year and Date
      2010-11-10
  • [Presentation] Enhancement of precipitation hardening of magnesium alloys by microalloying2010

    • Author(s)
      K.Hono, C.L.Mendis, K.Oh-ishi, J.Jayaraj
    • Organizer
      2010 Fall conference of the Korean Institute of Metals and Materials
    • Place of Presentation
      Changwon, Korea
    • Year and Date
      2010-11-04
  • [Presentation] Recrystallization or Not? : Formation Mechanism of Ultrafine Grains in Aluminum during Severe Plastic Deformation said Subsequent Anneal2010

    • Author(s)
      N.Tsuji
    • Organizer
      The 12th International Conference on Aluminum Alloys (ICAA 12)
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      2010-09-06
  • [Presentation] Advances in laser assisted 3D atom probe and its applications to light metals2010

    • Author(s)
      K.Hono
    • Organizer
      The 12th International Conference on Aluminum Alloys (ICAA 12)
    • Place of Presentation
      Yokohama, Japan
    • Year and Date
      2010-09-06
  • [Presentation] Nanostructure Formation during Deep Wire-Drawing of Copper2010

    • Author(s)
      N.Tsuji
    • Organizer
      The 7th Pacific Rim Int.Conf.on Advanced Materials Processing (PRICM 7)
    • Place of Presentation
      Cairns, Austral
    • Year and Date
      2010-08-02
  • [Presentation] Characterization of substructure evolution in ferrous lenticular martensite2010

    • Author(s)
      A.Shibata
    • Organizer
      The 7th Pacific Rim Int.Conf.on Advanced Materials Processing (PRICM 7
    • Place of Presentation
      Cairns, Australia
    • Year and Date
      2010-08-02
  • [Presentation] Role of Grain Boundaries in Mechanical Properties of Bulk Nanostructured Metals2010

    • Author(s)
      N.Tsuji
    • Organizer
      The 13th Int.Conf.on Intergranular and Interphase Boundaries in Materials (iib 2010)(JIMIC-7)
    • Place of Presentation
      Toba, Japan
    • Year and Date
      2010-06-28
  • [Presentation] Advances in laser assisted atom probe and its applications to the interface characterization of permanent magnets2010

    • Author(s)
      K.Hono, T.Ohkubo
    • Organizer
      The 13th Int.Conf.on Intergranular and Interphase Boundaries in Materials (iib 2010) (JIMIC-7)
    • Place of Presentation
      Toba, Japan
    • Year and Date
      2010-06-28
  • [Presentation] Usefulness of EBSD Analysis for Nanostructured Metals Fabricated by Severe Plastic Deformation2010

    • Author(s)
      N.Tsuji
    • Organizer
      EBSD 2011
    • Place of Presentation
      Duesseldorf, Germany
    • Year and Date
      2010-03-29
  • [Book] Automobiles : Performance Evaluation, Safety Assessment and Energy Consumption2010

    • Author(s)
      Yoshitaka Okitsu, Tadashi Naito, Nobuhiro Tsuji
    • Total Pages
      700
    • Publisher
      NOVA Publishers, N.Y

URL: 

Published: 2013-06-26  

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