摘要
在有限元差分法模拟温度场基础上,预测了管线钢TSCR过程的组织演变及断面分布规律,建立了考虑晶粒尺寸和再结晶影响的平均流变应力模型,提出了细晶轧制的工艺窗口。随着温度降低,精轧后几道次几乎没有再结晶发生;加大精轧区前两个道次压下量或者降低精轧入口温度可实现奥氏体晶粒细化;模型预测值与工业实测数据吻合良好。
Based on temperature field simulated with finite element difference method, the 2-D microstructure evolution and distribution profile was predicted and a model of mean flow stress with consideration of austenite grain size and recrystallization, and a technology of grain refinement rolling were put forward. There is only a little recrystallization due to low temperature during last several passes of finishing, so the austenite grain size can be refined by increasing reduction on first two passes of finishing or reducing temperature before finishing.
出处
《钢铁》
CAS
CSCD
北大核心
2008年第5期44-50,共7页
Iron and Steel
关键词
管线钢
薄板坯连铸连轧
再结晶
晶粒尺寸
平均流变应力
有限差分法
pipeline steel
thin slab casting and rolling（TSCR）
recrystallization
grain size
mean flow stress （MFS）
finite element difference method
