摘要
针对GH4169合金中小圆轧制棒材边缘存在扁长晶及因δ相形貌、分布不合格造成缺口持久敏感问题进行了深入的研究。研究结果表明:通过合理轧制工艺的控制,采用双排横列式轧机一火次轧制出边缘到中心均匀的组织,晶粒度细于7级,无缺口持久敏感的合格GH4169合金棒材。
The problem of nonrecrystalized grain existing at the edge of GH4169 small round bars, as well as the unusual shape and distribution of δ phase which caused the sensitivity of notched stress rupture property was investigated in this paper. Test results show that the qualified GH4169 whose grain size is better than grade 7 and free from notch sensitivity was rolled successfully by adopting reasonable rolling process(control heating temperature and deformation degree) and by one heat rolling with double-row open-train mill.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2011年第S2期178-181,共4页
Journal of Iron and Steel Research
关键词
晶粒度
Δ相
加热温度
变形量
持久性能
grain size
δ phase
heating temperature
amount of deformation
stress rupture property