摘要
采用单道次压缩实验方法，在Ｇｌｅｅｂｌｅ－１５００热模拟机进行了ＮｂＴｉ微合金钢高温热变形行为以及奥氏体动态再结晶组织演变规律的研究．在实验基础上，根据Ｚｅｎｅｒ－Ｈｏｌｏｍｏｎ方程导出关于Ｚ值与峰值应力、临界应变之间的关系，求出变形激活能为３５３ｋＪ／ｍｏｌ．
The hot deformation behavior and microstructure evolution of a NbTi microalloyed steel were investigated by single compression test in Gleeeble 1500 hot simulator. Based on the σ ε curve,the relationship between Z,ε c and σ p was determined and the activation energy for hot deformation was calculated from Zener Hollomon expression. Finally,the deformation resistance expression was regressed by Marquardt method.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第2期165-168,共4页
Journal of Northeastern University(Natural Science)
基金
国家"九五"科技攻关项目
关键词
微合金钢
合金钢
显微组织
奥氏体
高温变形
NbTi microalloyed steel,dynamical recrystallization,activation energy,microstructure.
