摘要
通过压缩和三点弯曲试验对加Ｌａ后富Ｎｉ的ＮｉＡｌ合金力学性能进行了考察。结果发现，Ｌａ的加入可以明显地细化合金的晶粒及改善ＮｉＡｌ和Ｎｉ３Ａｌ的两相分布。适量Ｌａ可提高合金的室温屈服强度和塑性，但超过一定的含量，合金的塑性反而有所下降。在合金中，引入Ｂ韧化的Ｎｉ３Ａｌ对合金的塑性有利。
The effects of La on the microstructure and mechanical properties of Ni rich NiAl alloys were
investigated by compress, bending deformation and optical micrography, SEM The results
show that little La can greatly improve the yield stress and strain of the alloys at room
temperature But if content amount of La exceeds the limited amount, their RT ductility
decreases The reason of beneficial effects of La is that La can decrease the grain size and
make the NiAl phase and Ni 3Al phase more compatible
出处
《材料工程》
EI
CAS
CSCD
北大核心
1999年第3期11-14,27,共5页
Journal of Materials Engineering
