CSP轧制DC04深冲钢时的动态再结晶研究  

Study on Dynamic Recrystallization of DC04 Deep Drawing Steel During CSP Process

作　　者：张勇福[1] 魏远征[2] 李书黎[1] 谭佳梅[2] 杨晶晶[1] 宋述鹏[1] 吴润[1] 

机构地区：[1]武汉科技大学材料与冶金学院,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》2012年第24期43-45,49,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(50901053)

摘　　要：利用Gleeble-1500热模拟试验机对DC04系列深冲钢进行了单道次压缩试验,得到该钢种连铸坯在进行CSP轧制时高温变形过程中的真应力-应变曲线,通过回归分析得到其动态再结晶数学模型为:Z=ε觶exp(194.021RT);动态再结晶的判定条件分别为Z=8.817×107exp(15.736εc)、Z=8.009×107exp(9.928εs)。在此基础上建立动态再结晶的三维模型图,利用该模型图可有效避免轧制时产生的混晶现象。Gleeble-1500 thermomechanical simulator was applied to obtain the true stres-tme strain curves of DC04 deep drawing steel during high temperature deformation by CSP（Compact Strip Production）. Then the mathematical models and the critical conditions of dynamic recrystallization were established, which are Z=b exp （ 194.021 ）,Z=8.817 x 107 exp（15.7366c） andZ=8.009 x 107 exp （9.928e,）. Based on these models, a three-dimensional dynamical recrystallization model was obtained, and then it can avoid the appearance of mixed grain during rolling process.

关 键 词：CSP DC04深冲钢 动态再结晶模型 混晶现象 

分 类 号：TG131.1[一般工业技术—材料科学与工程]