High cycle fatigue behavior of different regions in a low-pressure sand-cast GW103K magnesium alloy component

被引：5
作者：
Jiang, Longkang [1 ,2 ]
Liu, Wencai [1 ,2 ,3 ]
Li, Yanlei [1 ,2 ]
Wu, Guohua [1 ,2 ]
Ding, Wenjiang [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[3] Shanghai Light Alloy Net Forming Natl Engn Res Ct, Shanghai 201615, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2014年 / 29卷 / 21期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
CRACK INITIATION; MICROSTRUCTURE; MECHANISMS; POROSITY;
D O I：
10.1557/jmr.2014.286
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Different parts of a casting may receive different microstructures during cooling particularly for the large scale casting, which can affect the fatigue behavior. In the present study, in consideration of the safety and reliability, the microstructures, tensile properties, and high cycle fatigue behaviors of different regions in a low-pressure sand-cast Mg-10Gd-3Y-0.5Zr (GW103K) magnesium alloy component with large scale and complicated structure were investigated. The results showed that the tensile properties particularly ultimate tensile strength (UTS) and elongation (EL) varied with regions and the fatigue strength varied in a range from 100 to 115 MPa. In addition, crack initiation, crack propagation, and fracture behavior of the studied alloys after tensile test and high cycle fatigue test were also investigated systematically.
引用
收藏
页码：2587 / 2595
页数：9
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