2015 Fiscal Year Final Research Report
Fatigue crack retardation by deformation twin in magnesium alloy
Project/Area Number |
26820318
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Structural/Functional materials
|
Research Institution | Saga University |
Principal Investigator |
Morita Shigeki 佐賀大学, 工学(系)研究科(研究院), 准教授 (00314089)
|
Project Period (FY) |
2014-04-01 – 2016-03-31
|
Keywords | マグネシウム合金 / 変形双晶 / 集合組織 / 結晶粒径 / 疲労き裂 |
Outline of Final Research Achievements |
The fatigue crack propagation behavior of pre-tension rolled and pre-compression extruded textured polycrystalline magnesium alloys were investigated. The pre-introduced deformation twins existing at a crack tip does not influence the fatigue crack propagation rate. There is the optimal volume of deformation twin. Finally, the fatigue crack does not propagate at the interface of deformation twins and/or deformation twin and matrix.
|
Free Research Field |
工学
|