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采用ODF织构分析方法,对390 MPa级超低碳BH钢板热轧、冷轧、退火过程织构演变规律进行研究,并对不同冷轧压下量和不同退火工艺织构进行分析。结果表明:经冷轧变形后的钢板有较强的择优取向,具有典型的{112}<110>和{111}<110>织构,形变织构中的不利织构{001}<110>较强;冷轧压下率为80%时再结晶退火后钢板具有较强的γ织构,{111}<112>织构取向密度高达11.7;退火温度和保温时间对α织构影响不大,提高退火温度和延长保温时间使γ织构增强,r值增加。
The texture evolution of 390 MPa ultra low carbon BH steel during hot rolling, cold rolling and annealing was studied by ODF texture analysis method. The textures of different cold rolling reduction and different annealing processes were analyzed. The results show that the steel sheet after cold rolling has a strong preferred orientation with typical {112} <110> and {111} <110> texture, detrimental texture {001} <110> The strength of {111} <112> texture orientation is as high as 11.7; the annealing temperature and holding time have little effect on the texture of α , Raising the annealing temperature and prolonging the holding time to enhance the γ texture and increase the r value.