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Effects of Ho on Microstructure and Mechanical Properties of Mg-3Zn-0.6Zr Alloy
Pages: 52-55
Year: Issue:  19
Journal: Hot Working Technology

Keyword:  镁合金显微组织力学性能;
Abstract: 采用金相显微分析、X射线衍射、扫描电镜以及显微硬度测试等方法,研究了稀土元素Ho对Mg-3Zn-0.6Zr合金显微组织及力学性能的影响.结果表明,Mg-3Zn-xHo-0.6Zr(x=3,5,7)合金系组织由α-Mg基体、Mg3HoZn3相,以及少量的Mg24Ho5相组成.随着Ho含量的增加,Mg3HoZn3相含量增多,起到强化晶界作用.由于Mg3HoZn3相硬而脆,当Ho含量(质量分数)超过3%...
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