CSP热轧低碳钢的强化机制研究  

Strengthening Mechanism of Hot-Rolled Low Carbon Steel Produced by CSP

作　　者：苏世怀[1] 何宜柱[2] 朱涛[1] 刘学伟[2] 翁宇庆[3] 

机构地区：[1]马鞍山钢铁股份有限公司,安徽马鞍山243000 [2]安徽工业大学冶金与材料学院,安徽马鞍山243002 [3]中国金属学会,北京100711

出　　处：《钢铁》2006年第5期65-68,共4页Iron and Steel

摘　　要：研究了CSP热轧低碳SPHC钢的微观组织、第二相粒子的析出及其对强度的影响,对马钢CSP生产的SPHC钢和常规热轧工艺的SPHC钢进行了屈服强度比较。结果表明,马钢SPHC钢的实测值比计算值高42MPa,常规工艺生产的SPHC钢实测值与计算值比较接近。对马钢SPHC钢进行透射电镜观察,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,马钢SPHC钢沉淀强化的强度增量为40 MPa。The effect of microstructure, precipitation of seccnd phase on strength of SPHC produced by CSP （compact strip production） were investigated. The yield strength of SPHC produced both by CSP and by traditional technology were compared. The results show that the calculated yield strength of SPHC produced by CSP is 42 MPa lower than measured, but the measured and calculated yield strength of SPHC produced by traditional technology are the same. The TEM observation shows that there are three kinds of particles which sizes are nano-scale, submicron-seale, and micro-scale in the steel produced by CSP. Precipitating strengthening contributes 40 MPa to the yield strength of SPHC produced by CSP.

关 键 词：CSP SPHC 强化机制 析出 

分 类 号：TG335.11[金属学及工艺—金属压力加工]