超低碳钢等温过程中杂质的晶界偏聚研究  

The Study of Grain Boundary Segregation of Impurity in Ultra\|Low Carbon Steel During Isotherm

作　　者：张灶利[1] 吴旭飚 刘登科 林清英[3] 余宗森 

机构地区：[1]北京科技大学材料物理系 [2]北京东凯永磁材料厂 [3]北京钢铁研究总院

出　　处：《金属热处理学报》1999年第2期21-25,共5页

摘　　要：用俄歇电子能谱（ＡＥＳ）和扫描电镜（ＳＥＭ）研究了超低碳钢在９００℃等温时Ｐ、Ｓ、Ｃ、Ｂ等杂质元素在晶界的偏聚问题。结果发现，等温初期Ｐ、Ｂ在晶界的含量出现峰值，保温一定时间后，晶界Ｓ含量也出现峰值，碳的晶界含量随等温时间递增。长时间等温。The impurity segregation to grain boundary in ultra\|low carbon steel during 900℃ isotherm was investigated by AES and SEM.The results show that the peak of phosphor and boron segregation at grain boundary arises at initial stages of isotherm,and also that of sulfur with the prolonging.The concentration of carbon at grain boundary is increasing with isotherm.Chemical interaction and site competition between impurities at grain boundary occur after isotherm at 900℃ for a longer time.The Study of Grain Boundary Segregation of Im purity in Ultra Lo w Car

关 键 词：杂质的晶界偏聚 超低碳钢 等温处理 俄歇电子能谱 

分 类 号：TG142.31[一般工业技术—材料科学与工程] TG151[金属学及工艺—金属材料]