摘要
The NiAl-28Cr-5.85Mo-0.15Hf alloy was prepared by high-pressure die casting (HPDC) and subsequent hot isostatic pressing(HIP), and tested for compressible strength and fracture behavior at 300-1 373 K. The results show that the elevated temperature 0.2% compressible yield strength as well as the room-temperature compressible fracture strain of as-HIP alloy are larger than those of the same alloy prepared by directional solidification (DS). It suggests that the fine structures with a homogeneous distribution of fine Cr (Mo) and Hf-rich phase created by high-pressure die casting lead to these improvements.
The NiAl-28Cr-5.85Mo-0.15Hf alloy was prepared by high-pressure die casting （HPDC） and subsequent hot isostatic pressing（HIP）, and tested for compressible strength and fracture behavior at 300-1 373 K. The results show that the elevated temperature 0.2% compressible yield strength as well as the room-temperature compressible fracture strain of as-HIP alloy are larger than those of the same alloy prepared by directional solidification （DS）. It suggests that the fine structures with a homogeneous distribution of fine Cr （Mo） and Hf-rich phase created by high-pressure die casting lead to these improvements.
出处
《中国有色金属学会会刊：英文版》
CSCD
2006年第A03期2000-2003,共4页
Transactions of Nonferrous Metals Society of China
基金
Project (05YB31) supported by the Scientific Research Initial Foundation for Doctor of Shenyang Institute of Aeronautical Engineering,China
关键词
镍
铝合金
结构材料
物理属性
高压铸造
金属加工
NiAl/Cr（Mo,Hf） alloy
high-pressure die casting
hot isostatic pressing
compressive properties
