研究了950~1300℃固溶处理对00Cr25Ni7Mo4N超级双相不锈钢组织的影响。结果表明，≤1000℃固溶处理时，钢中有σ相析出，要消除热轧态的σ相，固溶温度应大于1050℃；随着固溶温度升高，铁素体相含量增加，奥氏体相含量下降。最佳固溶处理温度在1050℃~1100℃之间，此时两相比例接近1：1；随着固溶温度的提高，两相的晶粒尺寸在逐渐增大，到了1250℃晶粒明显长大。
Effect of solution-treated temperature at 950~1300℃ on microstructure of steel 00Cr25Ni7Mo4N has been studied. The results showed that as solution temperature ≤1000℃, the σ-phase precipitated in steel, in order to eliminating σ-phase of hot rolling steel, solution temperature must be up to 1050℃; With the increasing of solution temperature, α-phase content increased and γ-phase content decreased, the optimum solution temperature was 1050℃~1100℃; The grain size of α and γ-phase rapidly grew up when solution temperature was up to 1250℃.
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