研究了不同退火温度下Nb+Ti微合金化高强IF钢的显微组织和织构的演变。结果表明,750~870℃退火后,试验钢为完全再结晶组织;810~840℃退火后,试验钢的屈服强度、抗拉强度、伸长率、塑性应变比及应变硬化指数分别为300 MPa、410 MPa、36.5%、1.5、0.20;并且α取向线有向{111}织构靠拢的趋势。试验钢工业生产中的最佳退火温度为810~840℃。 The microstructure and texture evolution of Nb + Ti microalloyed high strength IF steel at different annealing temperatures were studied. The results show that the test steel is completely recrystallized after annealing at 750-870 ℃. The yield strength, tensile strength, elongation, plastic strain ratio and strain hardening index of the test steel after the annealing at 810-840 ℃ are 300 MPa , 410 MPa, 36.5%, 1.5, 0.20, respectively; and the α orientation lines have a tendency toward the {111} texture. The best annealing temperature in the industrial production of test steel is 810 ~ 840 ℃.