ULC-BH钢连续退火过程织构的演变规律研究  

Research on Texture Evolution Law During Continuous Annealing for ULC-BH Steel

作　　者：冯月雪[1] 康永林[1] 刘光明[2] 滕华湘[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]首钢技术研究院,北京100041

出　　处：《热加工工艺》2011年第16期157-160,共4页Hot Working Technology

基　　金："十一五"国家科技支撑计划资助项目(2006BAE03A13)

摘　　要：利用X射线衍射研究了340 MPa级超低碳烘烤硬化钢(ULC-BH钢)连续退火三个阶段的织构演变规律。结果表明:再结晶初期,定向形核和选择生长的共同作用使得{111}织构增强,定向形核作用占据主体地位;再结晶后期,选择长大是{111}织构发展的主要方式。其中,{111}<110>织构在再结晶初期的定向形核作用下大幅度增加,而{111}<112>织构则是在再结晶后期选择长大的过程中涨幅较大;再结晶结束后适当升高温度有助于{111}织构的发展,过高升温则会引起相反的效果。The laws of texture evolution during three continuous annealing stages of 340 MPa grade ULC-BH steel were studied by X-ray diffraction （XRD）. The results show that, at the beginning of recrystallization, { 111 } texture increases under the actions of both oriented nucleation and selective growth, in which oriented nucleation play a major role with the { 111} 〈110〉 texture increasing substantially, while selective growth is the main way of developing {111 } texture in the later recrystallization and { 111 }〈112〉 texture increases at this stage. It is helpful for { 111 } texture to raise temperature after the recrystaUization, but it will also lead the opposite effect when it is overheated.

关 键 词：ULC-BH钢 织构 定向形核 选择长大 

分 类 号：TG156.33[金属学及工艺—热处理]