将2101双相不锈钢分别在950、1 000、1 050、1 100℃保温30 min进行固溶处理。采用XRD、定量金相法分析了2101双相不锈钢的相组成随固溶温度的变化情况,通过维氏硬度计、电化学试验、慢应变应力腐蚀试验研究其硬度及耐蚀性能变化情况。结果表明:当固溶处理温度在950~1 100℃范围时,2101双相钢具有良好的相平衡,无明显的析出相,经1 050℃固溶处理30 min后的DSS2101综合性能较好。 2101 duplex stainless steel were 950,1000,1 050,1 100 ℃ incubated for 30 min for solution treatment. The changes of phase composition of 2101 duplex stainless steel with solution temperature were analyzed by XRD and quantitative metallographic analysis. The hardness and corrosion resistance of 2101 duplex stainless steel were studied by Vickers hardness test, electrochemical test and slow strain stress corrosion test. The results show that when the solution treatment temperature is in the range of 950-1 100 ℃, the duplex phase of 2101 has good phase balance and no obvious precipitates. The DSS2101 has better overall performance after the solution treatment at 1 050 ℃ for 30 min.