固溶温度对2101节镍型双相不锈钢组织及性能的影响

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Influence of Solution Temperature on Structures and Properties of Low-nickel Duplex Stainless Steel 2101

1. School of Materials and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China;
2. Provincial Key Lab of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China

摘要: 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。
- 节镍型双相不锈钢 /
- 固溶处理 /
- 点蚀 /
- 应力腐蚀
Abstract: Solution treatments of duplex stainless steel 2101 were performed at 950℃,1 000℃,1 050℃ and 1 100℃ for 30 min respectively.The microstructure variation of the steel at different solution temperature was analyzed by XRD and quantitative metallography,and the hardness and corrosion-resistant properties of the steel were studied by the means of Vickers hardness meter,electrochemical test and slow-strain-rate stress corrosion test.The results show that duplex stainless steel 2101 exhibits excellent phase balance without obvious precipitated phase at the treatment temperature of 950~1 100℃,and the steel treated at 1 050℃ for 30 min has better comprehensive properties.
- low-nickel duplex stainless steel /
- solution treatment /
- pitting /
- stress corrosion