研究了第三代高强度高塑性低碳中锰冷轧TRIP钢的退火工艺对性能的影响和残留奥氏体稳定性.结果表明:临界区退火温度和保温时间对钢的力学性能具有显著影响,退火温度为590℃,保温时间为18 h时,实验用钢6.72％ Mn-TRIP可获得815 MPa的抗拉强度和38％的断后伸长率,强塑积＞30 GPa·％;临界区保温时,C、Mn元素由马氏体配分到新形成的残留奥氏体,使残留奥氏体稳定在室温.大量残留奥氏体以及配分之后的马氏体和发生再结晶的铁素体,使材料具有良好的塑性和强度.
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