• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Effects of grain-boundaries on high-temperature fracture discussed by experiments using double cylindrical bicrystals

Research Project

Project/Area Number 16560607
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural/Functional materials
Research InstitutionTokyo Institute of Technology

Principal Investigator

ONAKA Susumu  Tokyo Institute of Technology, Interdisciplinary raduate School of Science and Engineering, Professor, 大学院総合理工学研究科, 教授 (40194576)

Co-Investigator(Kenkyū-buntansha) KATO Masaharu  Tokyo Institute of Technology, Interdisciplinary raduate School of Science and Engineering, Professor, 大学院総合理工学研究科, 教授 (50161120)
FUJII Toshiyuki  Tokyo Institute of Technology, Interdisciplinary raduate School of Science and Engineering, Associate Professor, 大学院総合理工学研究科, 助教授 (40251665)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2004: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywordshigh-temperature deformation / high-temperature fracture / grain boundary / plastic deformation / crystal defects
Research Abstract

A double cylindrical bicrystal is a bicrystal consisting of a cylindrical inside grain with a second grain wrapped around its curved side surface. Using a double cylindrical bicrystal of a Cu-SiO_2 alloy, tensile tests were performed at 800K under 2×10^<-4>/s. Three specimens cut from the same bicrystal were deformed to three different strains. Preferential formation of grain-boundary cracks around the cylindrical inside grain was observed after the tensile tests. In addition to the occurrence of grain-boundary sliding, the misfit of slip deformation at the grain boundary affects the formation of the grain-boundary cracks.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (3 results)

All Other

All Journal Article (3 results)

  • [Journal Article] Effects of Grain-Boundary Sliding and Plastic Deformation of Grains on the Formation of Grain-Boundary Cracks in a Double Cylindrical Bicrystal of a Cu-SiO2 Alloy

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

      Materials Transactions, JIM (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of grain-boundary sliding and plastic deformation of grains on the formation of grain-boundary cracks in a double cylindrical bicrystal of a Cu-SiO_2 alloy

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

      Materials Transactions(JIM) (In press)

    • NAID

      10019486714

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of Grain-Boundary Sliding and Plastic Deformation of Grains on the Formation of Grain-Boundary Cracks in a Double Cylindrical Bicrystal of a Cu-SiO2 Alloy

    • Author(s)
      野中 晋
    • Journal Title

      Materials Transactions, JIM (掲載決定済)

    • Related Report
      2006 Annual Research Report

URL: 

Published: 2004-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi