S-04马氏体时效不锈钢析出相的热力学计算及强化工艺的优化

Thermodynamic Calculation of Precipitates and Optimization of Strengthening Technology of Maraging Stainless Steel S-04

借助于Thermo Calc热力学计算软件,计算了S 04马氏体时效不锈钢不同时效温度下基体组织和析出相的变化,并根据计算结果优化了相应的时效处理工艺。力学性能测试和研究结果表明:用所确定的时效工艺进行热处理后,S 04钢的强韧性最好。

Thermodynamic calculation has been carried out for study of change of matrix and precipitates of maraging stainless steel S04 at different ageing temperature. Based on the calculated results, the heat treatment of steel S04 has been optimized. The results of mechanical test show that the best combination of strength and toughness of steel S04 can be obtained by new heat treatment.