Deformation behavior and microstructure of NiAl-Cr(Mo) alloy by powder metallurgical technique

来源期刊：中国有色金属学报(英文版)2005年第z3期

论文作者：高强 郭建亭 刘午 淮凯文 张俊善

文章页码：38 - 42

Key words：hot pressing； NiAl-28Cr-6Mo； microstructural refinement； mechanical properties

Abstract: NiAl-28Cr-6Mo alloy was prepared by hot-pressing (HP) the atomized prealloyed powders. The results show that the powders have uniformly refined size and small interlamellar spacing; the porosity is the main defect in the powder metallurgy (PM) alloy, the Cr(Mo) phase in the alloy is easy to segregate to form network in the interior of the original powders and blocks at the boundaries of the original powders during the HP processing; the PM alloy exhibits a high-level combination of fracture toughness and tensile strength, whereas the creep resistance of the PM alloy is degraded.