摘要
The effects of recrystallization and environment (vacuum versus air) on tensile properties of B-free Ni3Al (Zr) alloys were investigated. The results indicate that the incompletely recrystallized and stress-relieved specimens show the most desirable ductility and ultimate tensile strength, and that the recrystallization treatment promotes susceptibility to the test environment of the alloys. It is found that the amount of ductile fracture is reduced by air for completely recrystallized specimens. The Auger analyses show that Zr atoms do not segregate to the grain boundaries(GBs) for specimens heat-treated at 1 100 ℃, however Zr atoms segregate to the GBs for specimens heat-treated at 900 ℃. These results imply that Zr-doping cannot suppress environmental embrittlement.
The effects of recrystallization and environment （vacuum versus air） on tensile properties of B-free Ni3Al （Zr） alloys were investigated. The results indicate that the incompletely recrystallized and stress-relieved specimens show the most desirable ductility and ultimate tensile strength, and that the recrystallization treatment promotes susceptibility to the test environment of the alloys. It is found that the amount of ductile fracture is reduced by air for completely recrystallized specimens. The Auger analyses show that Zr atoms do not segregate to the grain boundaries（GBs） for specimens heat-treated at 1100 ℃, however Zr atoms segregate to the GBs for specimens heat-treated at 900℃. These results imply that Zr-doping cannot suppress environmental embrittlement.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2006年第2期368-375,共8页
Transactions of Nonferrous Metals Society of China
关键词
NI3AL
锆
镍合金
再结晶
拉伸性能
冷轧
Ni3Al
Ni3Al（Zr）
Zr-doping
recrystallization
tensile properties
environmental embrittlement
