热轧终轧条件对ELC—BH钢板Ar_3的影响  

Effects of Hot Rolling Finiching Condition on A_(r3) Temperature of Extra Low-carbon and High Strength Bake-hardening Sheet Steel

作　　者：关小军[1] 周家娟[1] 王先进[2] 汪福成[3] 

机构地区：[1]山东工业大学,济南250061 [2]北京科技大学 [3]武钢钢研所

出　　处：《物理测试》1998年第2期25-28,共4页Physics Examination and Testing

摘　　要：研究表明,随着ELC—BH钢板终轧变形量和终轧变形速度增加以及终轧温度降低,A_(r3)升高,这些规律归因于高温变形期间加工硬化和热激活软化两种因素竞争引起的微观组织结构的变化。The study shows that Ar3 temperature of extra-low carbon and high strength bake-hardening sheet steel rises with the increase in strain and strain rate at hot rolling finishing pass and with the decrease in hot rolling finishing temperature. In fact, this effet is attributed to the microstructural changes in the sheet steel caused by the two competitive factors of work-hardening and hot-softening during hot deformation.

关 键 词：超低碳钢板 烘烤硬化 终轧条件 相变点 热轧 

分 类 号：TG335.5[金属学及工艺—金属压力加工] TG142.31[一般工业技术—材料科学与工程]