摘要
运用力学性能测试、金相显微镜、扫描电镜研究了稀土在含硅量约为22％的过共晶Al-Si合金中的合金化作用。结果表明,稀土可作为合金元素替代昂贵金属Ni;稀土与Cu,Mg,Fe,Si等形成的稀土化合物产生的第二相强化是改善合金高温拉伸性能的主要原因;稀土对合金的强化作用存在一个稀土的最佳含量范围。
The alloying effect of rare earth on hypereutectic Al-Si alloys containing about 22% silicon is investigated by mechanical testing, metallographic microscopy and scanning electron microscopy. The results show that the Ni in hypereutectic Al-Si alloy can be substituted by the second phase strengthening of rare earth by combining with Cu,Mg,Fe,Si is one of the main reasons to improve the tensile property at high temperature of the alloy, and there exist an optimal concerntration rang of rare earth in alloying effect on hypereutectic Al-Si alloy.
出处
《理化检验（物理分册）》
CAS
1998年第3期12-14,38,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
湖南省计委八五攻关项目
