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2008 Fiscal Year Final Research Report

Mechanics of high-density lattice defect materials

Research Project

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Project/Area Number 18062002
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

KATO Masaharu  Tokyo Institute of Technology, 大学院・総合理工学研究科, 教授 (50161120)

Co-Investigator(Kenkyū-buntansha) ONAKA Susumu  東京工業大学, 大学院・総合理工学研究科, 教授 (40194576)
HIGASHIDA Kenji  九州大学, 工学研究院, 教授 (70156561)
TOMOTA Yo  茨城大学, 大学院・理工学研究科, 教授 (90007782)
TSUJI Nobuhiro  大阪大学, 大学院・工学研究科, 准教授 (30263213)
Project Period (FY) 2006 – 2008
Keywords強化機構 / ひずみ速度依存性 / 破壊靭性 / 転位 / 結晶粒微細化 / 中性子回折 / ECAP加工 / ARB加工
Research Abstract

巨大ひずみ加工により創製された格子欠陥を高密度に含む超微細粒金属材料の塑性変形, 疲労, 破壊などの力学特性を実験的, 理論的に研究し, そのメカニクスを解明した.結晶粒の微細化に 伴う強度の上昇と高いひずみ速度依存性の発現は, 結晶粒界からの転位の発生とその熱活性化運動過程によって合理的に説明できた. さらに, 疲労軟化挙動や脆性-延性遷移温度の低下についても, 結晶粒微細化効果を通じて合理的に説明することができた.

  • Research Products

    (31 results)

All 2009 2008 2007 2006

All Journal Article (20 results) (of which Peer Reviewed: 20 results) Presentation (10 results) Book (1 results)

  • [Journal Article] Thermally Activated Dislocation Depinning at a Grain Boundary in Nanocrystalline and Ultrafine-grained Materials2009

    • Author(s)
      M. Kato
    • Journal Title

      Mat. Sci. Eng. A (印刷中)

    • Peer Reviewed
  • [Journal Article] Brittle-ductile Transition in Low Carbon Steel Deformed by the Accumulative Roll Bonding Process2009

    • Author(s)
      M. Tanaka, K. Higashida, T. Shimokawa and T. Morikawa
    • Journal Title

      Mater. Trans. 50

      Pages: 56-63

    • Peer Reviewed
  • [Journal Article] Temperature and Strain Rate Dependence of Flow Stress in Severely Deformed Copper by Accumulative Roll Bonding2009

    • Author(s)
      T. Kunimine, N. Takata, N. Tsuji, T. Fujii, M. Kato and S. Onaka
    • Journal Title

      Mater. Trans. 50

      Pages: 64-69

    • Peer Reviewed
  • [Journal Article] Cyclic Deformation Behavior of Ultra-Fine Grained Copper Produced by Equal Channel Angular Pressing2009

    • Author(s)
      Y. Furukawa, T. Fujii, S. Onaka and M. Kato
    • Journal Title

      Mater. Trans. 50

      Pages: 70-75

    • Peer Reviewed
  • [Journal Article] High Tensile Strength of Ferritic Steel Subjected to Severe Drawing2009

    • Author(s)
      T. Suzuki, Y. Tomota, A. Moriai and H. Tashiro
    • Journal Title

      Mater. Trans. 50

      Pages: 51-55

    • Peer Reviewed
  • [Journal Article] Fracture Toughness Enhanced by Grain Boundary Shielding in Submicron-grained Low Carbon Steel2008

    • Author(s)
      M. Tanaka and K. Higashida
    • Journal Title

      Mater. Trans. 49

      Pages: 58-63

    • Peer Reviewed
  • [Journal Article] A Dislocation Bow-Out Model for Yield Stress of Ultra-Fine Grained Crystals2008

    • Author(s)
      M. Kato, T. Fujii and S. Onaka
    • Journal Title

      Mater. Trans. 49

      Pages: 1278-1283

    • Peer Reviewed
  • [Journal Article] Tensile Behavior of Fine-Grained Steels2008

    • Author(s)
      Y. Tomota, A. Narui and N. Tsuchida
    • Journal Title

      ISIJ Int. 48

      Pages: 1107-1112

    • Peer Reviewed
  • [Journal Article] Fracture Toughness Enhanced by Severe Plastic Deformation in Low Carbon Steel2008

    • Author(s)
      M. Tanaka, N. Fujimoto, T. Yokote and K. Higashida
    • Journal Title

      Mater. Sci. Forum 584-586

      Pages: 637-642

    • Peer Reviewed
  • [Journal Article] Crystallography and Mechanical Properties of Ultrafine TRIP-aided Mutli-phase Steels2007

    • Author(s)
      M. Wakita, Y. Adachi and Y. Tomota
    • Journal Title

      Material Science Forum 539-543

      Pages: 4351-4356

    • Peer Reviewed
  • [Journal Article] Unique Mechanical Properties of Nano-Structured Metals2007

    • Author(s)
      N. Tsuji
    • Journal Title

      J. of Nanoscience and Nanotechnology 7

      Pages: 3765-3770

    • Peer Reviewed
  • [Journal Article] Nanostructured Bulk Copper Fabricated by Accumulative Roll Bonding2007

    • Author(s)
      N. Takata, S-H Lee, C-Y Lim, S-S Kim and N. Tsuji
    • Journal Title

      J. of Nanoscience and Nanotechnology 7

      Pages: 3985-3989

    • Peer Reviewed
  • [Journal Article] Microstructure and Mechanical Properties of Commercial Purity Titanium Severely Deformed by ARB Process2007

    • Author(s)
      D. Tedara, S. Inoue and N. Tsuji
    • Journal Title

      J. Mater. Sci. 42

      Pages: 1673-1681

    • Peer Reviewed
  • [Journal Article] Through-thickness Characterization of Microstructure and Texture in High Purity Aluminum Processed to High Strains by Accumulative Roll-bonding2007

    • Author(s)
      N. Kamikawa, N. Tsuji, X. Huang and N. Hansen
    • Journal Title

      Mater. Trans. 48

      Pages: 2043-2048

    • Peer Reviewed
  • [Journal Article] Neutron Diffraction Profile Analysis to Determine Dislocation Density and Grain Size for Drawn Steel Wire2007

    • Author(s)
      S. Ryufuku, Y. Tomota, Y. Shiota, T. Shiratori, H. Suzuki and A. Moriai
    • Journal Title

      Material Science Forum 539-543

      Pages: 2281-2286

    • Peer Reviewed
  • [Journal Article] Hardening by Annealing and Softening by Deformation in Nanostructured Metals2006

    • Author(s)
      X. Huang, N. Hansen and N. Tsuji
    • Journal Title

      Science 312

      Pages: 249-251

    • Peer Reviewed
  • [Journal Article] Quantification of Annealed Microstructures in ARB Processed Aluminum2006

    • Author(s)
      N. Kamikawa, N. Tsuji, X. Huang and N. Hansen
    • Journal Title

      Acta Materialia 54

      Pages: 3055-3066

    • Peer Reviewed
  • [Journal Article] Microstructure Homogeneity in Various Metallic Materials Heavily Deformed by Accumulative Roll-Bonding2006

    • Author(s)
      B. L. Li, N. Tsuji and N. Kamikawa
    • Journal Title

      Mater. Sci. Eng. A 423

      Pages: 331-342

    • Peer Reviewed
  • [Journal Article] Severe Local Strain and the Plastic Deformation of Guinier-Preston Zones in the Al-Ag System Revealed by 3D Electron Tomography2006

    • Author(s)
      K. Inoke, K. Kaneko, M. Weyland, P. A. Midgley, K. Higashida and Z. Horita
    • Journal Title

      Acta Materialia 54

      Pages: 2957-2963

    • Peer Reviewed
  • [Journal Article] The Role of Deformation Twinning in the Formation of a Fine-grained Structure in Cold-rolled 310 Steels2006

    • Author(s)
      T. Morikawa and K. Higashida
    • Journal Title

      J. Mater. Sci. 41

      Pages: 2581-2585

    • Peer Reviewed
  • [Presentation] Temperature and Strain Rate Dependence of Flow Stress in Severely Deformed Copper by Accumulative Roll Bonding2008

    • Author(s)
      T. Kunimine, N. Takata, N. Tsuji, T. Fujii, M. Kato and S. Onaka
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-23
  • [Presentation] Cyclic Deformation Behavior of Ultra-Fine Grained Copper Produced by Equal Channel Angular Pressing2008

    • Author(s)
      Y. Furukawa, T. Fujii, S. Onaka and M. Kato
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-23
  • [Presentation] Brittle-to-ductile Transition in Severely Deformed Ferrite Steel2008

    • Author(s)
      S. Horiuchi, M. Tanaka, T. Yokote and K. Higashida
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-23
  • [Presentation] Thermal Activation Process during Dislocation Bow Out at a Grain Boundary in Nanocrystals and Ultra-fine-Grained Materials2008

    • Author(s)
      M. Kato
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-22
  • [Presentation] The Effect of Severe Plastic Deformation of the Brittle-ductile Transition in Low Carbon Steel2008

    • Author(s)
      K. Higashida, M. Tanaka, S. Horiuchi and T. Shimokawa
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-22
  • [Presentation] High Tensile Strength of Ferritic Steel Subjected to Severe Drawing2008

    • Author(s)
      Y. Tomota, T. Suzuki, A. Moriai and H. Tashiro
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-22
  • [Presentation] Reason of Limited Tensile Elongation and Ways to Manage Both High Strength and Large Ductility on Nanostructures Metals Fabricated by Giant Straining Processes2008

    • Author(s)
      N. Tsuji
    • Organizer
      International Symposium on Giant Straining Process for Advanced Materials (GSAM-2008)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2008-11-22
  • [Presentation] Fracture Toughness Enhanced by Severe Plastic Deformation in Low Carbon Steel2008

    • Author(s)
      M. Tanaka, N. Fujimoto, T. Yokote and K. Higashida
    • Organizer
      The 4th International Conference on Nanomaterials by Severe Plastic Deformation (NanoSPD4)
    • Place of Presentation
      Goslar, Germany
    • Year and Date
      2008-08-18
  • [Presentation] Unique Mechanical Properties of Nanostructured Bulk Metals Fabricated by Severe Plastic Deformation2007

    • Author(s)
      N. Tsuji, X. Huang, N. Hansen, N. Kamikawa and D. Terada
    • Organizer
      The Sixth Pacific Rim International Conference on Advanced Materials and Processing
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      20071105-09
  • [Presentation] Recrystallization Behaviors of Highly Strained Metallic Materials2007

    • Author(s)
      N. Tsuji, N. Kamikawa, N. Takata and N. Shigeiri
    • Organizer
      Int. Conf. on Recrystallization & Grain Growth
    • Place of Presentation
      韓国・済州島
    • Year and Date
      2007-06-12
  • [Book] Severe Plastic Deformation : Towards Bulk Production of Nanostructured Materials2006

    • Author(s)
      N. Tsuji
    • Total Pages
      545-565
    • Publisher
      NOVA Science Publishers

URL: 

Published: 2010-06-10   Modified: 2016-04-21  

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