SUN Baode
,
CHE Xiaozhou
,
LIN Dongliang
,
ZHOU Yaohe(Department of Materials Engineering
,
Shanghai Jiaotong University
,
Shanghai 20030
,
China)(Department of Materials Science
,
Shanghai Jiaotong University
,
Shanghai 200030
,
China)
金属学报(英文版)
The morphology and structure of melt spinning Ni-33.6at% Al doped with B and RE were investigated.The results show that the alloy consists of L10 martensitic grains and L12 Ni3Al at the grain boundaries when it contains no B and RE.The addition of 0.11-0.31wt% B can suppress the martensitic transformation and Ni3Al separation at the boundaries,and a supersaturated B2 single phase NiAl is obtained.The addition of 0.05wt% RE can eliminate Ni3Al precipitated at the boundaries and get complete martensite,but 0.2-0.8wt% RE addition can suppress the martensitic transformation, and supersaturated B2 single phase NiAl is obtained.The formation mechanism of supersaturated B2 single phase NiAl has been analyzed.
关键词:
:NiAl
,
null
,
null
,
null
