研究了低合金马氏体钢经Q&P(Quenching and partitioning,淬火和配分)工艺处理后的单轴拉伸性能,并与传统Q&T(Quenching and Tempering,淬火+回火)工艺进行比较,分别用SEM和XRD进行微观组织观察和残留奥氏体量的测量.结果表明,与Q&T工艺相比,在获得相同断后伸长率时,Q&P工艺处理的样品可以获得较高的抗拉强度,同时具有较高的加工硬化率和裂纹形成能.拉伸过程中,Q&P组织中新鲜马氏体强化基体,残留奥氏体协调变形、松弛应力、钝化裂纹,由硬基体和残留奥氏体组成的多相组织使Q&P工艺处理钢获得高强度和高塑性的配合.
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