摘要
测量了塑性金属间化合物合金Ｎｉ（５０）Ａｌ（３０）Ｆｅ（２０），Ｎｉ（５０）Ａｌ（２０）Ｆｅ（３０）和Ｎｉ（６０）Ａｌ（２０）Ｆｅ（２０）单晶和多晶的正电子寿命谱．基于正电子寿命谱的特征参数引入了正电子双区域捕获模型，并讨论了这些合金微观结构与力学性能之间的关系．
The positron lifetime spectra of single crystals and polycrystals of three intermetallic alloys Ni50Al30Fe20, Ni50Al20Fe30 and Ni60Al20Fe20 were measured.Based on the characteristic parameters, a two-region trapping model for positron was introduced, and the relationship between the microstructure and mechanical properties was discussed
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第11期1189-1193,共5页
Acta Metallurgica Sinica
关键词
金属间化合物
单晶
正电子湮没
Ni_(50)Al_(30)Fe_(20), Ni_(50)Al_(20)Fe_(30), Ni_(60)Al_(20)Fe_(20), intermetallics, single crystal,positron annihilation
