The high cycle fatigue property of Mg-Gd-Y-Zn-Mn alloy enhanced by LPSO phase

被引：13
|
作者：
Su, Chen [1 ]
Wang, Jingfeng [1 ,2 ]
Zeng, Linjie [1 ]
Hu, Hao [1 ]
Liu, Shijie [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
来源：
MATERIALS LETTERS | 2021年 / 304卷
关键词：
Metals and alloys; Fatigue; Structure; MAGNESIUM ALLOY; HIGH-STRENGTH; MECHANICAL-PROPERTIES; PROPAGATION;
D O I：
10.1016/j.matlet.2021.130367
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the high cycle fatigue (HCF) performance of the extruded Mg-Gd-Y-Zn-Mn alloy reinforced by Longperiod stacking ordered (LPSO) phase was researched. The results show that the Mg alloy enhanced by LPSO phase can have higher HCF strength, because the LPSO phase can effectively hindering the fatigue crack growth by force them to change the growth direction both in the high cycle tensile fatigue tests and rotating bending fatigue tests whether in smooth surfaces and V-notched samples. The fatigue strength of the smooth surface in this study can exceed 220 Mpa, which is close to the fatigue strength of Al alloy.
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页数：3
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