Effect of Mean Stress on Fatigue Crack Initiation in Magnesium Alloy and Crystallographic Analysis

被引：0
作者：
Tamada, K. [1 ]
Uematsu, Y. [2 ]
Kakiuchi, T. [2 ]
机构：
[1] Gifu Univ, Grad Sch Engn, Gifu 5011193, Japan
[2] Gifu Univ, Dept Mech Engn, Gifu 5011193, Japan
来源：
2016 INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY, ENVIRONMENT AND INFORMATION ENGINEERING (SEEIE 2016) | 2016年
关键词：
Magnesium alloy; Fatigue crack initiation; EBSD; Twining;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Plane bending fatigue test had been conducted to investigate fatigue crack initiation mechanism in coarse-grained magnesium alloy, AZ31, under different mean stress. The initial crystallographic structure was analyzed by an electron backscatter diffraction (EBSD) method. When the test had been conducted at the load ratio R=-1, secondary twin operated in a primary twin and resulted in the fatigue crack initiation. On the other hand at R=0.1, dual twin was activated and crack has initiated along the grain boundary.
引用
收藏
页码：457 / 460
页数：4
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