摘要
采用光学显微镜、扫描电镜和拉伸实验等方法研究了CSP线轧制工艺与薄规格低碳钢板显微组织、力学性能特征之间的关系.显微组织观察和力学性能实测结果表明:CSP线生产的低碳钢连铸坯铸态组织比较均匀,靠近表面层的枝晶宽度与心部区域差别很小,皆为较细的树枝晶,枝晶宽度在几微米至30μm之间;成品1.0mm低碳钢薄板的组织很细,约为5μm,但轧向与横向组织中的铁素体晶粒形貌和尺寸存在差异;由于晶粒组织细小且钢中有害元素、夹杂物的含量低,故板的强度和延伸率高.
The microstructure characteristics and mechanical properties wer e studied on thin low carbon strip s produced by CSP technology using methods of o ptical and scanning electron microscopg,tensile tests and so on.The uniform fi ne dendrites with interdendritic width smaller than30ìm were observed everywh ere in the continuous casting slab of low carbon steel.Microstructure of1.0m m low carbon steel strip by CSP technology is fine,with an average grain size a bout 5ìm,but the grain shape and size are different for the longitudinal an d tranverse directions.The strength and total elongation of1.0mm strip are h igh because of the fine microstructure and low quantity of deleterious component s and impurities.
出处
《材料科学与工艺》
EI
CAS
CSCD
2002年第2期121-125,共5页
Materials Science and Technology
基金
国家"新一代钢铁材料重大基础研究"资助项目(G1998061500)
