Si-Mn系相变诱导塑性钢热轧过程中组织演变的预测  

Prediction of Microstructure Evolution of Si-Mn TRIP Steel During Hot Rolling

作　　者：朱丽娟[1] 吴迪[1] 赵宪明[1] 王平吉[2] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]济南钢铁集团石横特殊钢厂,山东肥城271600

出　　处：《钢铁研究学报》2007年第7期36-40,共5页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50334010)

摘　　要：建立了热轧相变诱导塑性(TRIP)钢奥氏体动态和静态再结晶、晶粒尺寸和流变应力预测模型,定量分析了不同硅含量对其再结晶的影响。结果表明,预测值与实测值符合较好;硅含量增加可抑制、减缓动态和静态再结晶发生,抑制奥氏体晶粒长大,提高流变应力、残余应变和位错密度,从而有利于铁素体相变的发生。A model has been developed to predict the dynamics of dynamic and static recrystallization, grain size and flow curves of hot rolled Si-Mn TRIP steel. The model quantifies the influence of the silicon content on the recrystallization, and the calculated values are matched to the measured ones. Addition of silicon retards both dynamic, static recrystallization and grain growth as well as increases the flow stress, retained strain and dislocation density of the hot-deformed austenite, accordingly the ferrite transformation is accelerated by increasing the silicon contents.

关 键 词：TRIP钢 动态再结晶 静态再结晶 奥氏体晶粒 流变应力 

分 类 号：TG335.11[金属学及工艺—金属压力加工]