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

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.