CSP工艺热轧SPHC组织演变和析出物研究  

Study of Microstructure Evolution and Precipitation Behavior of SPHC Produced by CSP Process

作　　者：占云高[1,2] 乔建生[1] 万发荣[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243500

出　　处：《热加工工艺》2009年第10期1-4,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(50771017);国家重点基础研究发展计划基金资助项目(2007ID102)

摘　　要：分析了马钢CSP工艺SPHC在轧制过程中的组织演变规律;通过与传统工艺SPHC比较,研究了微观组织、第二相粒子的析出及其对强度的影响。结果表明:SPHC的组织细化主要发生在1050～971℃,在CSP低碳钢各强化机制中细晶强化是最主要的强化方式,通过透射电镜观察,观察到其中存在纳米级的、亚微米级的和微米级的3种尺寸级别的第二相粒子,对马钢SPHC钢产生了沉淀强化。The microstructure evolution of SPHC produced by CSP process was studied. The microstructure, precipitation behavior and strengthening mechanism were discussed and compared with that of the steels produced in the conventional production. The results show that the microstructure of SPHC is refined between 1050-971℃, the slab microstructure is refmed by recrystallization; the strength of SPHC produced by CSP is higher than that of traditional process. The nanometer particles, sub-micron particles and micron particles are observed in SPHC hot strips.

关 键 词：CSP SPHC 组织演变 析出 

分 类 号：TG113.2[金属学及工艺—物理冶金]