Ni_3Al-Fe基合金组织与力学性能的研究  

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Ni_3Al-Fe BASED ALLOY

作　　者：李辉[1] 郭建亭[1] 谭明晖[1] 孙超[1] 赖万慧[1] 王淑荷[1] 

机构地区：[1]中国科学院金属研究所

出　　处：《金属学报》1992年第8期A337-A342,共6页Acta Metallurgica Sinica

基　　金：国家863计划资助

摘　　要：本文研究了合金化的Ni_3Al-Fe基合金高温变形后的组织及瞬时拉伸性能和700—900℃的蠕变持久性能,结果表明,合金由γ′的β相组成,其晶粒在温度低于1000℃时保持稳定;屈服强度在<600℃时也保持稳定;合金的高温塑性好,蠕变研究表明,该合金在700—900℃蠕变由位错攀移控制,其蠕变激活能为439kJ/mol,应力敏感系数为4.The microstructure, tensile properties at 20—950℃ and creep rupture properties at 700—900℃ in a Ni_3Al-Fe based alloy after high-temperature deformation have been studied. The results show the microstructure of the alloy is composed of γ′ and β phases. The grain size and yield strength of the alloy is stable ≤600℃. And it is ductile at high-temperature. The creep in the alloy at 700—900℃ is controlled by dislocations climb, and creep activity energy is 439 kJ / mol, stress factor is 4.

关 键 词：NI3AL基合金 组织 性能 蠕变 

分 类 号：TG132.32[一般工业技术—材料科学与工程]