高强度管线钢中沉淀相的析出行为研究  

Study on Precipitating Behavior of Precipitation Phase for High Strength Pipeline Steel

作　　者：鲍东杰[1] 郭长辉[1] 何宇[1] 齐增生[1] 

机构地区：[1]邢台职业技术学院/军需工业学院建工系,河北邢台054035

出　　处：《热加工工艺》2009年第6期32-34,共3页Hot Working Technology

基　　金：河北省科技厅指导项目(04212171);河北省建设科学技术研究计划基金资助项目(2008-143)

摘　　要：利用TEM电镜的STEM模式采用萃取复型的方法研究了高强度管线钢中沉淀相的析出行为。结果表明,钢中的沉淀相主要为球形的(Nb,Ti)C,同时含有少量的四方形TiN,大部分沉淀相为复合型析出,沉淀相尺寸均小于50nm,主要集中在10～20nm。The precipitating behavior of precipitation phase of high strength pipeline steel was investigated using extraction replica method by means of TEM. The results show that the most of precipitation phase are spherical （Nb,Ti） C particles, and a little of square TiN exists. Precipitate size and distribution statistics indicates that most of NbC and Ti （C,N） particles are compound precipitating. Precipitate size is usually less than 50 nm, and mainly in a range of 10-20 nm.

关 键 词：管线钢 沉淀相 复合析出 尺寸分布 

分 类 号：TG142.4[一般工业技术—材料科学与工程]