GH4169合金轧制棒材组织和持久性能的控制  

Effect of Rolling Process on the Microstructure and Stress Rupture Property of GH4169 Alloy Bars

作　　者：李凤艳[1] 赵长虹[1] 吴贵林[1] 杨亮[1] 刘宁[1] 丑英玉[1] 

机构地区：[1]抚顺特殊钢股份有限公司技术中心,辽宁抚顺113001

出　　处：《物理测试》2013年第4期14-17,共4页Physics Examination and Testing

摘　　要：针对GH4169合金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,可以得到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 problems of nonrecrystalized grain existing at the edge of GH4169 small round bars, as well as the un- usual shape and distribution of phase which caused the sensitivity of notched stress rupture property were investi- gated in this study. 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 and by one heat rolling with double-row open-train mill.

关 键 词：晶粒度 Δ相 加热温度 组织 持久性能 

分 类 号：TG335.62[金属学及工艺—金属压力加工]