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Ab-initio Lattice Instability Analysis for Atomic Database of Interfacial Designing in Precipitation Strengthening Superalloys

Research Project

Project/Area Number 19760069
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Materials/Mechanics of materials
Research InstitutionKobe University

Principal Investigator

YASHIRO Kisaragi  Kobe University, 大学院・工学研究科, 准教授 (50311775)

Research Collaborator NISHIMURA Masaomi  信州大学, 工学部, 助教
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,590,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywords析出強化超合金 / 整合界面 / 格子不安定解析 / 第一原理計算 / データベース / レアメタル
Research Abstract

第一原理計算による格子不安定性解析を,平成19年度はX族元素(Ni,Pd,Pt)ならびにXI族元素(Cu,Ag,Au),平成20年度はIV族(Ti,Zr,Hf),VI族(Cr,Mo,W)について行い,[001]方向短軸引張・圧縮,静水圧引張・圧縮など様々な変形モードにおける不安定ひずみを算出した.これまで解析した元素を含めて,格子不安定となるひずみにおける臨界応力σ_<33>を,無負荷平衡状態での弾性係数C_<33>で無次元化して整理すると,臨界ひずみε_<33>に対してσ_<33>/C_<33>が一直線上に分布することが分かった.この直線の傾きは[001]単軸引張では0.379,単軸圧縮では0.637であった.静水圧引張解析の場合,同じように格子不安定となるときの平均応力σmを引張前の体積弾性率B_0で無次元化すると,体積ひずみε_vに対してσm/B_0が直線となり,その傾きは0.389であった.この直線関係の物理的意味はまだ定かではないが,合金強度評価のめやすとなる可能性がある.

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (26 results)

All 2009 2008 2007 Other

All Journal Article (17 results) (of which Peer Reviewed: 12 results) Presentation (7 results) Remarks (2 results)

  • [Journal Article] NiとAlの不安定原子の違い2009

    • Author(s)
      西村正臣, 屋代如月, 冨田佳宏
    • Journal Title

      材料 58

      Pages: 76-81

    • NAID

      130002085584

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 単元系アモルファスにおける不安定原子の役割2008

    • Author(s)
      屋代如月, 西村正臣, 冨田佳宏
    • Journal Title

      材料 57

      Pages: 755-760

    • NAID

      130002085602

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 単軸引張下のナノ多結晶体およびアモルファス金属の不安定挙動 : 局所格子不安定解析2008

    • Author(s)
      屋代如月, 西村正臣, 冨田佳宏
    • Journal Title

      材料 57

      Pages: 112-118

    • NAID

      130002085734

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Computational study on misfit dislocation in Ni-based superalloys by quasicontinuum method2008

    • Author(s)
      J. R. P. Djuansjah, K. Yashiro, Y. Tomita
    • Journal Title

      Materials Transactions 49

      Pages: 2507-2514

    • NAID

      10024402961

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Local Lattice Instability Analysis on Nano-polycrystalline and Amorphous Metals : Role of Unstable Atoms under Tension, Compression and Shear2008

    • Author(s)
      K. Yashiro, M. Nishimura, M. Higuchi, Y. Tomita
    • Journal Title

      Proc. of ICHMM-2008, J. Fan and H. Chen edited, DEStech Publications, Inc.

      Pages: 308-311

    • Related Report
      2008 Final Research Report
  • [Journal Article] Discrete Dislocation Dynamics Study on Interaction between Prismatic Dislocation Loop and Interfacial Network Dislocations2008

    • Author(s)
      K. Yashiro, M. Konishi, Y. Tomita
    • Journal Title

      Computational Materials Science 43

      Pages: 481-488

    • NAID

      120001384814

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 単軸引張下のナノ多結晶体およびアモルファス金属の不安定挙動 : 局所格子不安定解析2008

    • Author(s)
      屋代如月
    • Journal Title

      材料 57

      Pages: 112-118

    • NAID

      130002085734

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Discrete Dislocation Dynamics Study on Interaction between Prismatic Dislocation Loop and Interfacial Network Dislocations2008

    • Author(s)
      Kisaragi Yashiro
    • Journal Title

      Computational Materials Science 43

      Pages: 481-488

    • NAID

      120001384814

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 単元系アモルファスにおける不安定原子の役割2008

    • Author(s)
      屋代如月
    • Journal Title

      材料 57

      Pages: 755-760

    • NAID

      130002085602

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 単軸引張下のナノ多結晶体およびアモルファス金属の不安定挙動:局所格子不安定解析2008

    • Author(s)
      屋代 如月
    • Journal Title

      材料 57

      Pages: 112-118

    • NAID

      130002085734

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ni/Ni3Al界面ミスフィット転位の構造および運動 : 分子動力学による検討2007

    • Author(s)
      屋代如月, J. R. Pangestu, 冨田佳宏
    • Journal Title

      材料 56

      Pages: 439-444

    • NAID

      130002085889

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Local Lattice Instability Analysis on Nano-polycrystalline and Amorphous Metals: Deformation Limit of Weak Area2007

    • Author(s)
      K. Yashiro, M. Nishimura, Y. Tomita
    • Journal Title

      Proc. of Third Asian-Pacific Congress on Computational Mechanics (CD-ROM) MS31-5-1

      Pages: 1-9

    • Related Report
      2008 Final Research Report
  • [Journal Article] Local Lattice Instability Analysis on Deformation Localization in Amorphous Metal Sheet under Tension2007

    • Author(s)
      M. Nishimura, K. Yashiro, Y. Tomita
    • Journal Title

      Proc. of Third Asian-Pacific Congress on Computational Mechanics (CD-ROM) MS31-5-4

      Pages: 1-8

    • Related Report
      2008 Final Research Report
  • [Journal Article] Quasicontinuum simulations on misfit dislocation at the Y/Y' interface in Ni-based superalloys2007

    • Author(s)
      J. R. P. Djuansjah, K. Yashiro, Y. Tomita
    • Journal Title

      Proc. of Third Asian-Pacific Congress on Computational Mechanics (CD-ROM) MS31-3-1

      Pages: 1-10

    • Related Report
      2008 Final Research Report
  • [Journal Article] Molecular Dynamics Study on Characteristics of Misfit Dislocations in Ni-Based Superalloys2007

    • Author(s)
      K. Yashiro, Y. Suzuki, J. R. P. angestu, Y. Tomita
    • Journal Title

      Key Engineering Materials 345-346

      Pages: 951-954

    • Related Report
      2008 Final Research Report
  • [Journal Article] Global vs. Local Stability of Polycrystalline and Amorphous metals: Molecular Dynamics Study2007

    • Author(s)
      Kisaragi Yashiro
    • Journal Title

      Kdy Engineering Materials 340-341

      Pages: 991-996

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ni/Ni3Al界面ミスフィット転位の構造および運動:分子動力学による検討2007

    • Author(s)
      屋代 如月
    • Journal Title

      材料 56

      Pages: 439-444

    • NAID

      130002085889

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 鉄・イットリウム酸化物合金の第一原理格子不安定性解析2008

    • Author(s)
      山本智, 横川望, 屋代如月, 冨田佳宏
    • Organizer
      日本機械学会第21回計算力学講演会
    • Place of Presentation
      琉球大学
    • Related Report
      2008 Final Research Report
  • [Presentation] [001]単軸引張および圧縮下の格子不安定マップ : 第一原理格子不安定解析2008

    • Author(s)
      横川望, 山本智, 屋代如月, 冨田佳宏
    • Organizer
      M&M2008材料力学カンファレンス
    • Place of Presentation
      立命館大学
    • Related Report
      2008 Final Research Report
  • [Presentation] 第一原理計算によるFe中のイットリウム酸化物の格子不安定性解析2008

    • Author(s)
      山本智, 横川望, 屋代如月, 冨田佳宏
    • Organizer
      M&M2008材料力学カンファレンス
    • Place of Presentation
      立命館大学
    • Related Report
      2008 Final Research Report
  • [Presentation] Local Lattice Instability Analysis on Nano-polycrystalline and Amorphous Metals : Role of Unstable Atoms under Tension, Compression and Shear2008

    • Author(s)
      Kisaragi Yashiro
    • Organizer
      The 2nd International Conference on Heterogeneous Materials Mechanics
    • Place of Presentation
      Huangshan, China
    • Related Report
      2008 Annual Research Report
  • [Presentation] Local Lattice Instability Analysis on Nano-polycrystalline and Amorphous Metals: Deformation Limit of Weak Area2007

    • Author(s)
      Kisaragi Yashiro
    • Organizer
      Third Asian-Pacific Congress on Computational Mechanics
    • Place of Presentation
      京都国際会議場
    • Year and Date
      2007-12-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] 正20面体短距離秩序クラスターの中心原子の安定性変化 : 第一原理格子不安定解析2007

    • Author(s)
      久馬雅彦, 屋代如月, 冨田佳宏
    • Organizer
      日本機械学会第20回計算力学講演会
    • Place of Presentation
      同志社大学
    • Related Report
      2008 Final Research Report
  • [Presentation] [001]単軸引張を受ける遷移金属の第一原理格子不安定解析2007

    • Author(s)
      横川望, 久馬雅彦, 屋代如月, 冨田佳宏
    • Organizer
      M&M2007材料力学カンファレンス
    • Place of Presentation
      東京大学
    • Related Report
      2008 Final Research Report
  • [Remarks]

    • URL

      http://solid.mech.kobe-u.ac.jp

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://solid.mech.kobe-u.ac.jp/

    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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