Wang Zhigang1, Li Yufei2, Wang Zhenhong1, et al. Preparation of V-5Cr-5Ti Alloy by Vacuum Arc Remelting[J]. Special Casting & Nonferrous Alloys, 2011,31(5):410-412.
Wang Zhigang1, Li Yufei2, Wang Zhenhong1, et al. Preparation of V-5Cr-5Ti Alloy by Vacuum Arc Remelting[J]. Special Casting & Nonferrous Alloys, 2011,31(5):410-412.DOI:
V-5Cr-5Ti合金电弧熔炼制备技术
摘要
采用"二次真空自耗电弧熔炼+锻造+温轧+退火处理"的工艺制备了V-5Cr-5Ti合金材料
并采用化学分析、光学金相(OM)、扫描电镜(SEM)和拉伸测试方法表征了合金的质量。结果表明
经二次电弧熔炼后
合金中O含量可控制在500~600μg/g范围内
但铸锭晶粒粗大。经1150℃锻造开坯、450℃温轧及1000℃/1h退火处理后
合金为细小等轴晶组织
晶粒小于100μm
其屈服强度为356MPa
抗拉强度为449MPa
伸长率约为31.5%
断面收缩率为71.5%。
Abstract
V-5Cr-5Ti alloy was prepared by double vacuum arc remelting(VAR) and then forging as well as warm rolling and annealing treatment to realize desirable chemical composition and mechanical properties
and properties and microstructure of the prepared alloy were characterized by chemical analysis
OM(optical microscope)
SEM(scanning electron microscope) and tensile testing.The results show that oxygen content in the alloy can be controlled in 500
6
00 μg/g after double arc remelting
however
grain exhibits coarse in the ingot.Fine equiaxed grain with size lower than 100 μm can be observed in the prepared alloy with forging at 1 150 ℃ and warm rolling at 450 ℃ and then annealing at 1000 ℃ for one hour