Effects of Zn on the microstructure, mechanical properties, and damping capacity of Mg-Zn-Y-Zr alloys

被引：61
|
作者：
Wang, Jingfeng [1 ,2 ]
Song, Pengfei [1 ,2 ]
Gao, Shan [1 ,2 ]
Huang, Xuefei [3 ]
Shi, Zhangzhi [3 ]
Pan, Fusheng [1 ]
机构：
[1] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[3] Tsinghua Univ, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Magnesium alloys; Microstructure; Mechanical property; Damping capacity; Long period stacking ordered (LPSO) phase; Granato-Lucke theory; PHASE;
D O I：
10.1016/j.msea.2011.04.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influences of Zn on the microstructure, mechanical properties, and damping capacity of as-extruded (Mg-5%Y-0.6%Zr)(1-x)Zn-x (x = 2%, 4%, 6%, mass fraction) alloys were investigated by optical microscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, tensile testing, and dynamic mechanical analysis (DMA). The phase composition and microstructure of the alloys displayed evident variations with changes in Zn content. When the mass fraction of Zn changed from 2% to 6%, the phases mainly consisted of a long period stacking ordered (LPSO) X-phase (Mg12YZn) and a W-phase (Mg3Y2Zn3). Comparison of the mechanical properties and damping capacities of the different phases showed that the X-phase benefits the mechanical properties of the alloy without drastic impairment to their damping capacities. The damping capacities are discussed in terms of the Granato-Lucke theory and G-L plots. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：5914 / 5920
页数：7
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