采用累积大压下方法细化铁素体组织  

Ferrite Refinement with Large Accumulative Deformation

作　　者：张红梅[1] 刘相华[1] 王国栋[1] 

机构地区：[1]东北大学轧制及连轧自动化国家重点实验室,辽宁沈阳110006

出　　处：《钢铁研究学报》2001年第1期36-39,共4页Journal of Iron and Steel Research

基　　金：973新一代钢铁材料重大基础研究项目!(G19980 6 15 0 9)

摘　　要：在 Gleeble15 0 0热模拟机上测定了 85 0℃下经变形为 5 0 %的单道次及多道次轧制的试样的动态 CCT曲线 ,并以此为依据在 Ar3 附近进行了用多道次累积大变形代替单道次大变形的轧制对比实验。结果发现 :在奥氏体未再结晶区进行大压下量、短间隔时间的轧制 ,可以细化 α晶粒。而且 ,多道次累积大变形与单道次大变形一样可以得到细小的铁素体晶粒。The single pass and multi pass continuous cooling transformation (CCT) diagrams with 50 % compressive deformation at 850 ℃ were obtained on a Gleeble 1500 hot deformation simulator. Multi pass substituting single pass heavy deformation was tested at a temperature around A r3 on the basis of CCT diagrams. It shown that the ferrite grain can be refined with large reduction, short interpass rolling in austenite non recrystallization region. The results also indicated that the multi pass deformation has same effects on grain refinement as the single pass.

关 键 词：动态CCT曲线 铁素体 应变诱导相变 再结晶 晶粒细化 轧制 

分 类 号：TG113[金属学及工艺—物理冶金]