用热膨胀法,通过对含1.5%w(Al)和含w(Al)1.0%+w(Si)0.5%的2种TRIP钢的显微组织观察,绘制了2种不同w(Al)、w(Si)的TRIP钢的静态CCT曲线,研究了含Al TRIP钢在冷却过程中的相转变,分析了冷却速率及不同w(Al)对微观组织和贝氏体转变动力学的影响。结果表明,Al元素加速TRIP钢冷却时铁素体转变和贝氏体转变,但是推迟珠光体转变。 Two different w (Al), w (w), and w (w) were drawn by thermal expansion method by microstructure observation of two TRIP steels containing 1.5% w (Al) and 0.5% w (Al) (Si) TRIP steel. The phase transformation of Al-containing TRIP steel during cooling was investigated. The effects of cooling rate and different w (Al) on the microstructure and transformation kinetics of bainite were analyzed. The results show that Al accelerates the ferrite transformation and bainite transformation during the cooling of TRIP steel, but delays the pearlite transformation.