摘要
采用光学金相显微镜、SEM、EBSD、DTA分析以及硬度等试验手段,研究了固溶处理对(Mg_(96.5)Zn_(1.5)Er_2)_(99.82)Zr_(0.18)合金组织和力学性能的影响。结果表明,合金铸态及热处理态的微观组织均由α-Mg、X相和(Mg,Zn)_xEr相组成,对铸态的(Mg_(96.5)Zn_(1.5)Er_2)_(99.82)Zr_(0.18)合金进行固溶处理后,(Mg,Zn)_xEr相转变成弥散分布的X相。晶粒尺寸随着固溶时间和温度的增加而变大。与铸态相比,合金热处理后的硬度没有发生太大变化。
The effects of solution treatment on the microstructure and mechanical properties of （Mg96.5Zn1.5Er2）99.82Zr0.18 alloy were preliminarily investigated by using optical and electron microscopy, EBSD, DTA analysis, and Vickers hardness test. The results indicate that the microstructure of as-cast and solution treated alloy all consists of a-Mg and X-phase （Mg,Zn） xEr phase. After solution treatment of the as-cast （Mg96.5Zn1.5Er2）99.82Zr0.18 alloy, （Mg,Zn）xEr phases turn into X phase, which is more dispersed. Grain size gradually decreases with the increase of the heat treatment temperature and time. Compared with the as-cast alloy, the hardness of heat-treated alloys dot not change obviously.
出处
《铸造技术》
CAS
北大核心
2016年第2期233-236,共4页
Foundry Technology
