提出了基于淬火回火的双相钢热镀锌退火工艺,并进行试验研究了该工艺对双相钢显微组织和力学性能的影响.结果表明,随着热镀锌或/及合金化时间的延长,材料的强度下降、塑性升高,相对于热镀锌退火,热镀锌合金化退火的温度更高、时间更长,因此双相钢的强度下降更明显;微合金元素铌延迟回火时马氏体中固溶碳的析出并延迟马氏体的回复再结晶过程,可以提高双相钢的回火稳定性,从而改善热镀锌双相钢的力学性能.
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