Effect of Y on Microstructure and Mechanical Properties as well as Corrosion Resistance of Mg-9Li-3Al Alloy

被引：1

作者：

Peng Xiaodong ^{[1
,2
]}

Li Junchen ^{[1
]}

Li Wenjuan ^{[1
]}

Yang Yan ^{[1
,2
]}

Wei Qunyi ^{[1
]}

机构：

[1] Chongqing Univ, Chongqing 400044, Peoples R China

[2] Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2013年 / 42卷 / 10期

关键词：

magnesium alloy; microstructure; mechanical property; corrosion resistance; MG;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of Y on the microstructure, the mechanical property and the corrosion resistance of Mg-9Li-3Al alloy was investigated by optical microscopy, scanning electronic microscopy (REM), X-ray diffraction (XRD), mechanical properties testing and electrochemical measurement. The results show that the addition of Y can change the microstructure form of the a phase and reduce its volume fraction. Meanwhile, the binary Al2Y phase is mainly distributed inside the beta phase and the a phase is formed. The addition of Y can effectively improve the ultimate tensile strength (UTS) and the elongation (EL) of the alloy. Upon 1.6 wt% Y addition, the UTS of the alloy is up to 190 MPa; the maximal EL reaches 19.3% when the content of Y is 2wt%. The corrosion resistances of the alloy are found to decrease upon Y content less than 1.2wt% and then increase upon Y content from 1.2wt% to 2.0wt%.

引用

页码：1993 / 1998

页数：6

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