Effect of solution treatment on microstructure and properties of duplex stainless steel

2017 3rd International Conference on Applied Materials and Manufacturing Technology

Wang, X.Y.^1 ; Luo, J.M.^1 ; Huang, L.Q.^1 ; Wang, H.B.^1 ; Ma, C.W.^1

Shougang Research Institute of Technology, Beijing

100043, China^1

关键词: 2205 duplex stainless steel;    Duplex stainless steel;    ELectrochemical methods;    Increasing solutions;    Low temperatures;    Microstructure and properties;    Solution temperature;    Solution treatments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/242/1/012061/pdf
DOI  :  10.1088/1757-899X/242/1/012061

来源: IOP

【 摘 要 】

The influence of solution treatment on microstructure and properties of 2205 duplex stainless steel (DSS) was studied. The microstructure, precipitates and corrosion resisting property were observed and analyzed by means of optical microscopy (OM), scanning electron microscopy (SEM) and electrochemical methods. The results showed that a large number of brittle σ-phase precipitates, which deteriorate the plasticity and corrosion resistance of the material, were easy to produce in the duplex stainless steel under the low temperature. The precipitation of σ-phase can be decreased and the plasticity and corrosion resistance can be improved by increasing solution temperature. In addition, the ferrite content increases with the increase of solution temperature, while less affected by cooling rate.