CSP低碳钢薄板组织演变及强化机理研究  

STUDY OF MICROSTRUCTURE EVOLUTION AND STRENGTHENING MECHANISM OF LOW CARBON STEEL PRODUCED BY CSP LINE

作　　者：康永林[1] 于浩[1] 王克鲁[1] 傅杰[1] 柳得橹[1] 王中丙 毛新平 陈贵江 

机构地区：[1]北京科技大学 [2]广钢集团珠江钢铁有限责任公司

出　　处：《钢铁》2003年第8期20-26,共7页Iron and Steel

摘　　要：　通过热力学计算和析出物形貌观察表明,析出物对铸坯晶粒的生长起到一定的限制作用。6道次连轧模拟计算结果与观察结果吻合较好,同时也表明,再结晶是组织细化的主要原因。各种强化方式定量计算的结果表明,细晶强化是主要的强化方式,沉淀强化和位错强化次之,且它们对屈服强度的贡献相近。By thermodynamics analysis and precipitates observation, it is concluded that the grain growth in continuous cast thin slab is restrained due to precipitation The simulation results are reasonably in good agreement with experimental observation, which also showed that recrystallization is the main reason for microstructure refinement Refinement strengthening is the primary strengthening mode Precipitation strengthening and dislocation strengthening are second to it, their contributions to yield strength are almost equal

关 键 词：薄板坯连铸连轧 CSP工艺 低碳钢 薄板 组织演变 强化机理 组织细化 再结品 析出 

分 类 号：TG335[金属学及工艺—金属压力加工]