摘要
研究了La对ZL70 2合金室温和高温力学性能的影响。La与合金中的Al,Si,Fe等元素形成难熔的、分布于晶界的不连续网状金属间化合物 ,提高了合金的热稳定性。当La的加入量为 0 10 %～ 0 15 % (质量分数 )时 ,可使合金获得较佳的综合力学性能。
The effect of lanthanum on microstructure and mechanical properties of ZL702 alloy at high temperature condition was studied. The experiment shows that high melting intermetallics reticularly distributing at grain boundary are formed with La and Al, Si, Fe and other elements of alloy, which enhances the thermal stability of the alloy. With appropriate content of La(0 10%～0 15%), the mechanical properties of the alloy, such as strength, at room temperature and high temperature can be improved.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2000年第2期187-189,共3页
Journal of the Chinese Society of Rare Earths
基金
国家教委留学回国人员专项基金
关键词
稀土
镧
高温性能
硅铝合金
ZL702合金
rare earths
lanthanum
Al Si alloy
high temperature mechanical properties
