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Clarification of dependency of fatigue behavior on microstructures by fatigue tests using micro-sized monocrystalline specimen of Mg alloy

Research Project

Project/Area Number 25820006
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Materials/Mechanics of materials
Research InstitutionGifu University

Principal Investigator

KAKIUCHI TOSHIFUMI  岐阜大学, 工学部, 准教授 (20452039)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords疲労 / マイクロマテリアル
Outline of Final Research Achievements

In this study, the dependency of the fatigue property of the Mg alloy on the microstructure was investigated using our self-made fatigue testing machine for a very small specimen of a micro material fabricated from a single crystal. The fatigue test results exhibited that the fatigue strength of the micro material was higher than that of the bulk material with the normal size and the scatter of the micro material was larger than that of the bulk material. The basal sliding, the twinning and the pyramidal sliding operated in each specimen in the increasing order of the fatigue strength, respectively. Besides, they were dependent strongly on the relationship between the crystal orientation and the loading direction. On the other hand, fatigue cracks initiated from the double twinning in most of the specimens of the bulk material and it is found that the operating deformation mechanism of the bulk material is different from that of the micro material.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (3 results)

All 2014 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Effect of grain orientation on fatigue behavior in micro cantilever of magnesium alloy AZ312014

    • Author(s)
      Toshifumi Kakiuchi, Yoshihiko Uematsu, Shinya Tamano, Satoshi Mizuno
    • Journal Title

      Procedia Materials Science

      Volume: 3 Pages: 967-972

    • DOI

      10.1016/j.mspro.2014.06.157

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Effect of grain orientation on fatigue behavior in micro cantilever of magnesium alloy AZ312014

    • Author(s)
      Toshifumi KAKIUCHI, Yoshihiko UEMATSU, Shinya TAMANO, Satoshi MIZUNO
    • Organizer
      20th European Conference on Fracture (ECF20)
    • Place of Presentation
      Trondheim (Norway)
    • Related Report
      2013 Research-status Report
  • [Presentation] Mg合金AZ31のマイクロカンチレバーによる微小疲労試験とEBSD結晶方位解析2013

    • Author(s)
      柿内利文,植松美彦,水野聡
    • Organizer
      日本機械学会2013年度年次大会
    • Place of Presentation
      岡山(日本)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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