Mn含量对于连铸坯特性的影响  

Effect of manganese content on the characteristics of continuous casting slab

作　　者：杨健[1] 阮晓明[1] 王睿之[1] 祝凯[1] 李成斌[1] 范正洁[1] 

机构地区：[1]宝钢集团有限公司中央研究院,上海201900

出　　处：《连铸》2016年第1期1-5,共5页Continuous Casting

摘　　要：通过对中、高锰钢铸锭低倍组织、导热系数及显微组织进行研究,为中、高锰钢连铸工艺的研究提供了理论基础。研究表明,中、高锰钢的导热系数较低,在凝固过程中易形成粗大柱状晶。中锰钢w[Mn]=3.35%时,显微组织为贝氏体;w[Mn]=5.82%时,显微组织为马氏体。随w[Mn]增大,高锰钢显微组织中奥氏体相的比例增大,最终形成奥氏体单相组织。The macrostructure,thermal conductivity and microstructure of middle and high manganese steel ingot have been investigated to provide a theoretical basis for the research on the continuous casting process of medium and high manganese steel. The results show that the thermal conductivities of medium and high manganese steel are low and coarse columnar grains are easily formed during solidification. When w[Mn]= 3.35% in medium steel,the microstructure is bainite. When w[Mn]= 5.82% in medium steel,the microstructure is martensite. With the increase of w[Mn],the ratio of austenite phase in high manganese steel is increased. Finally,the single austenite phase is formed.

关 键 词：中高锰钢 连铸 凝固组织 物性参数 

分 类 号：TF777[冶金工程—钢铁冶金] TG142.1[一般工业技术—材料科学与工程]