摘要
采用金属原位统计分布分析技术对直径为650mm的35号钢连铸圆坯横截面不同径向区域进行研究,发现经过电磁搅拌工艺所得的铸坯存在明显的负偏析带,对应的低倍组织显示为白亮带。白亮带两侧的成分分布有明显的差别,同时圆坯中心仍存在较为明显的中心疏松和偏析,导致芯部区域的致密度明显小于其它区域。此外,研究发现夹杂铝和硫化物在圆坯中心发生了明显的富集。
Metal original position statistic distribution analysis technique was employed to analyze the different radial areas in steel 35round billet（650mm） cross section.An obvious negative segregation band was found in the round billet after being treated with electromagnetic stirring technique.In macroscopic examination,the band was shown as a white band with composition distribution which was apparently different on both sides.Meanwhile,there was obvious central porosity and segregation in the center of the round billet,as well,which led to a lower density than that in other areas.Besides,the inclusions of aluminum and sulfide also tended to concentrate in the central area of the round billet.
出处
《冶金分析》
CAS
CSCD
北大核心
2012年第12期1-7,共7页
Metallurgical Analysis
基金
北京市海淀区科技项目(K20110089X)
关键词
圆坯
原位统计分布分析
电磁搅拌
白亮带
成分分布
round billet
original position statistic distribution analysis
electromagnetic stirring
white band
composition distribution
