薄板坯连铸连轧生产超薄低碳钢板的组织与性能  

Microstructure Characteristics and Properties of Ultra Thin Low Carbon Strips Produced by FTSR Technology

作　　者：王欣[1] 康永林[1] 于浩[1] 陈礼斌[2] 孔庆福[2] 史东日[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]唐山钢铁集团股份有限公司,河北唐山063016

出　　处：《机械工程材料》2006年第11期18-20,28,共4页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(50334010)

摘　　要：利用光学显微镜、扫描电镜和透射电镜等研究了唐钢薄板坯连铸连轧线(FTSR线)热轧低碳钢超薄板(厚0．8 mm)的显微组织和第二相析出粒子,对钢板的力学性能和成形性等进行了研究。结果表明:超薄低碳钢板的显微组织为比较细小、均匀的铁素体晶粒及少量的珠光体组织,铁素体的平均晶粒尺寸约7．0μm,钢板具有良好的综合力学性能和优良的成形性,钢中存在的较高密度位错和少量第二相析出粒子对钢板性能的提高起到了有利的作用。The microstructure characteristics and the precipitates of low carbon strips were researched by optical microscope, scanning and transmission electron microscope. The strips used in the experiments were produced by Flexible Thin Slab Rolling （FTSR） technology of Tangshan Steel Company, and the mechanical properties and formability of the strips were analyzed. The results show that the microstructure of ultra thin low carbon strips produced by FTSR technology consist of uniform fine ferrite and a little pearlite, and the diameter size of the ferrite is about 7. 0 μm The general mechanical properties and formability of the products are excellent, and also, the high density dislocation and a small quantity of precipitates existed in the microstructure are useful to the properties of the strips.

关 键 词：FTSR工艺 低碳钢板 微观组织 力学性能 

分 类 号：TG142.33[一般工业技术—材料科学与工程]