采用真空感应炉熔炼了4种不同Mo含量的00Cr12 Ni9 Mo (x) Cu2Ti马氏体时效不锈钢,研究了Mo含量对合金的完全固溶温度,以及随后的冷加工和时效处理工艺对合金的组织与性能的影响.金相观察发现在950℃～1100℃之间固溶时,晶粒随温度升高而增大；当Mo含量达到3.3％时,合金在1000℃以下固溶会有δ-铁素体析出.硬度分析发现,固溶温度对固溶态硬度几乎没有影响；增加Mo含量能提高马氏体时效不锈钢的峰值硬度以及抗过时效温度.耐腐蚀后的试验显示,1％的Mo含量即可有效提高合金的耐腐蚀性,时效4h对耐蚀性影响不大,当延长时效时间至400h,合金的耐腐蚀性严重受损.
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