通过两相区退火和贝氏体转变区等温处理,研究了铌含量和贝氏体等温处理温度对低碳 TRIP钢(w(Mn)=1.38%,w(Si)=0.6%,w(Al)=0.5%)组织和力学性能的影响.实验结果表明:增加铌含量,实验钢的残余奥氏体量减少,抗拉强度和屈服强度增加;当铌的质量分数为0.014%时,实验钢的伸长率和强塑积较高;贝氏体等温处理温度为400 ℃时,实验钢的残余奥氏体量较多,力学性能较好.
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