低碳贝氏体钢中硫化物的析出行为  

Precipitation Behavior of Sulfide in Low Carbon Bainitic Steel

作　　者：曹慧泉[1,2] 李广敏[1] 颜慧成[1] 罗登[3] 仇圣桃[1] 夏政海[3] 

机构地区：[1]钢铁研究总院先进钢铁流程及材料国家重点实验室,北京100081 [2]湖南华菱管线股份有限公司,长沙10011 [3]湖南华菱湘潭钢铁有限公司技术开发中心,湘潭411101

出　　处：《钢铁研究学报》2010年第3期56-60,共5页Journal of Iron and Steel Research

摘　　要：低碳贝氏体钢钢锭加热到1450℃均热1 h后分别空冷到1200℃淬火、800℃淬火,将淬火与未淬火样进行了TEM观察,1200℃淬火时,主要是氧化物析出,复合很少量的硫化物和氮化物;800℃淬火析出物有分别以MnS、CuxS、富单质Cu为主,复合少量TiN的三种复合析出物,析出物颗粒较大;钢锭中的硫化物析出相基本为CuS,复合少量MnS、(Ti,Nb)(C,N),析出物颗粒细小。Bainitic steel ingots were heated to 1 450℃ with holding 1 h, cooled in air, and then quenched respectively at 1200℃, 800℃. The ingots with quenching were investigated to compare the ingots without quenching by TEM. The results show that the oxide is found in the ingot quenched at 1 200 ℃ attached with a little of sulfide and Nitride. MnS, Cu, S and copper precipitate in large size attached with TiN in ingot quenched at 800℃. In ingot, CuS precipitates combined with little MnS and （Ti,Nb）（C,N） in fine size.

关 键 词：硫化铜 贝氏体 析出 

分 类 号：TG142.15[一般工业技术—材料科学与工程]