以用高强IF钢为研究对象,研究不同退火工艺对其组织与力学性能的影响。结果表明,随着退火温度的升高,IF钢的抗拉强度逐渐降低,断后伸长率和屈强比逐渐升高。随着退火时间的延长,IF钢的抗拉强度与屈服强度先增加后降低。 Using high-strength IF steel as the research object, the effects of different annealing processes on the microstructure and mechanical properties were studied. The results show that as the annealing temperature increases, the tensile strength of IF steel decreases gradually, and the elongation and yield ratio increase gradually. With the extension of annealing time, the tensile strength and yield strength of IF steel first increase and then decrease.