Effects of heat treatment on microstructure and mechanical properties of Mg-3Sn-1Mn magnesium alloy

被引：21
作者：
Yang Ming-bo [1 ,2 ,3 ]
Qin Cai-yuan [1 ]
Pan Fu-sheng [3 ]
机构：
[1] Chongqing Univ Technol, Mat Sci & Engn Coll, Chongqing 400054, Peoples R China
[2] Chongqing Univ Technol, Educ Minist, Key Lab Automobile Components Mfg & Testing Techn, Chongqing 400054, Peoples R China
[3] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400030, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2011年 / 21卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Mg-Sn-Mn alloy; heat treatment; microstructure; mechanical properties; TENSILE PROPERTIES; CREEP-PROPERTIES; CRYSTALLOGRAPHY;
D O I：
10.1016/S1003-6326(11)60990-4
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effects of heat treatment on the microstructure and mechanical properties of Mg-3Sn-1Mn alloy were preliminarily investigated by using optical and electron microscopy, X-ray diffraction (XRD) analysis, and tensile and creep test. The results indicate that the heat treatment has an obvious effect on the microstructure and mechanical properties of the Mg-3Sn-1Mn alloy. After the solid solution treatment at 420 degrees C, a majority of the Mg2Sn phases in the alloy are dissolved into the matrix. However, after the further aging treatment at 250 degrees C, lots of fine Mg2Sn phases in the aged alloy are precipitated at the grain boundaries and within the grains. As a result, the tensile and creep properties of the aged alloy are significantly improved. The mechanism for the higher tensile and creep properties of the aged alloy is related to the dispersive distribution of the Mg2Sn phase in the alpha-Mg matrix.
引用
收藏
页码：2168 / 2174
页数：7
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