Ti-IF钢CSP轧制时动态再结晶模型的建立  

Establishment of Dynamic Recrystallization Model for Ti-IF Steel Produced by CSP Process

作　　者：唐梦霞[1] 吴润[1] 杨晶晶[1] 魏远征[2] 谭佳梅[2] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武汉钢铁集团公司,湖北武汉430083

出　　处：《热加工工艺》2013年第23期52-54,共3页Hot Working Technology

摘　　要：通过Gleeble-3500热模拟实验机对CSP流程连铸Ti-IF铸坯在变形速率为0.1、3、8 s-1和变形温度为1060、1020、980、940、900℃下进行了单道次热模拟压缩试验,得到了Ti-IF钢的流变应力—应变曲线和加工硬化率—应力曲线,并建立了动态再结晶模型。试验结果表明,对于动态回复型的应力—应变曲线,可以采用加工硬化率的方法来确定其动态再结晶激活能。Single pass thermal simulation compression tests of Ti-IF steel produced by CSP process under deformation rate 0.1, 3, 8 s1 and deformation temperature 1060, 1020, 980, 940, 900℃ were carried out by Gleeble-3500 thermal simulation compressor. The stress-strain curves and work hardening rate -stress curves of Ti-IF steel were obtained and the dynamic recrystallization model was built. Test results show that, for dynamic recovery stress-strain curves, it can be used that the work hardening rate method to determine dynamic recrystallization activation energy.

关 键 词：TI-IF钢 加工硬化率 动态再结晶 CSP工艺 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335.11[金属学及工艺—金属材料]