摘要
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含量对Mg-xHo(x=6、8、10、15wt%)合金显微组织及力学性能的影响。结果表明,加入稀土Ho后,合金晶粒得到明显细化,其中Mg-10Ho合金的晶粒尺寸降至最小的20μm;加入稀土Ho后,合金在凝固过程中形成Mg24Ho5第二相,提高了合金力学性能。
The effects of Ho content on the microstructure and mechanical properties of as-cast alloys Mg-xHo（x=6, 8, 10, 15） were investigated by OM, XRD, SEM, hardness testing and universal materials testing. The results show that the grain size of microstructure is refined by Ho addition. For Mg-10Ho alloy, the minimum grain size is about 20 μm. The second phase of MguHo5 forms during solidification, which can increase the mechanical properties of the alloy.
出处
《热加工工艺》
CSCD
北大核心
2013年第8期77-79,共3页
Hot Working Technology
