Abstract: The recrystallization structure and textures of an IF steel (/% : 0. 005C, 0. 02Si, 0. 16Mn, 0. 011P, 0. 004S, 0. 042Als, 0. 061 Ti, 0. 003 1N) 0. 8 mm cold-rolled sheet during annealing at 500 ~800 ℃ are studied and the forming mechanism of ｛111｝ recrystallization textures and evolution law of structure of IF steel during batch annealing process are analyzed by X-ray diffraction technique combined with microstructure observation. Results show that with increasing annealing temperature the recrystallized volume increases, the real recrystallization temperature of test steel is 640 ℃ , and with increasing annealing temperature the density of {111}  recrystallized textures gradually increases, the {111} oriented grains mainly form during recrystallizing process and during growing process of the {111} oriented grains, the transfer between γ fiber textures occurs, it is mainly from {111} < 112 > texture transfers to {111} < 110 > texture.

Key words: IF Steel, Annealing, Structure, Recrystallization, Texture

摘要： 研究了IF钢(/%:0.005C、0.02Si、0.16Mn、0.011P、0.004S、0.042Als、0.061Ti、0.003 1 N)0.8 mm冷轧板在500～800℃退火时的再结晶组织及织构,采用X射线衍射技术结合微观组织观察分析了IF钢罩式退火过程中{111}再结晶织构形成机制和显微组织演变规律。结果表明,随退火温度的升高,再结晶数量逐渐增多,640℃为实验钢实际再结晶温度,同时{111}再结晶织构强度亦逐渐增大,{111}取向的晶粒主要在再结晶过程中形成,并在{111}取向晶粒长大过程中,γ纤维织构之间也发生相互转化,主要由{111}〈112〉织构转变为{111}〈110〉织构。

关键词: IF钢, 退火, 组织, 再结晶, 织构