CSP工艺冷轧钢板的组织形貌和夹杂物的研究  

Study of microstructure evolution of cold-rolled strip produced by CSP process

作　　者：孙昊[1] 任慧平[1] 金自力[1] 王海燕[1] 计云萍[1] 王玉峰[1] 李德刚[2] 田荣彬[2] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]包头钢铁集团公司薄板坯连铸连轧厂,内蒙古包头014010

出　　处：《材料热处理学报》2009年第3期53-56,75,共5页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金资助(50761005)

摘　　要：采用紧凑式热带生产工艺(CSP)热轧板为原料生产冷轧钢板,对该热轧板及其冷轧钢板生成过程中各段进行了扫描电镜和金相显微镜的观察,研究了材料组织的演变,并对冷硬板及其退火后冷轧板做了化学相分析。结果表明:CSP热轧板组织中有少量的珠光体和夹杂物,随后的冷轧及退火过程对珠光体和夹杂物的影响较小,退火后的冷轧板最终组织呈分布均匀的长饼状铁素体晶粒。化学相分析表明,冷轧后退火过程中Fe3C的析出量有增加和聚集粗化的现象发生。An investigation was carried out on a low carbon steel produced by compact strip production（CSP） process after cold-rolling and annealing by means of optical microscope, SEM and EDS analysis to study the mierostructure evolution during the processing. The inclusions in the steel was analyzed by SAXS. It is demonstrated that there are a little pearlite and inclusions in hot rolling slab, which exhibits no evident change during cold rolling and annealing. The final microstructure of the steel after the annealing consists of evenly distributed oval-shaped ferrite grains. The chemical analysis of phases shows that the size and amount of nanoscaled Fe3 C increase during the cold-rolling and the following annealing.

关 键 词：冷轧 退火 铁素体 珠光体 夹杂物 

分 类 号：TG142.3[一般工业技术—材料科学与工程]