Effect of partial replacement of carbon by nitrogen on intergranular corrosion behavior of high nitrogen martensitic stainless steels
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2019年第10期
论文作者：Wei-Chao Jiao Hua-Bing Li Jing Dai Hao Feng Zhou-Hua Jiang Tao Zhang Da-Ke Xu Hong-Chun Zhu Shu-Cai Zhang
文章页码：2357 - 2364
摘 要：The microstructure evolution and intergranular corrosion（IGC） behavior of high nitrogen martensitic stainless steels（MSSs） by partial replacing C by N were investigated by using microscopy, X-ray diffraction, nitric acid tests and double-loop electrochemical potentiokinetic reactivation（DL-EPR） tests. The results show that the partial replacement of C by N first reduces and then increases the size and content of precipitates in high nitrogen MSSs, and converts the dominant precipitates from M23C6 to M2N,furthermore first improves and then deteriorates the IGC resistance. The high nitrogen MSS containing medium C and N contents provides good combination of mechanical properties and IGC resistance.
Wei-Chao Jiao1，Hua-Bing Li1，Jing Dai1，Hao Feng1，Zhou-Hua Jiang1，Tao Zhang2，Da-Ke Xu2，Hong-Chun Zhu1，Shu-Cai Zhang1
1. School of Metallurgy, Northeastern University2. Corrosion and Protection Division, Shenyang National Laboratory for Materials Science, Northeastern University
摘 要：The microstructure evolution and intergranular corrosion（IGC） behavior of high nitrogen martensitic stainless steels（MSSs） by partial replacing C by N were investigated by using microscopy, X-ray diffraction, nitric acid tests and double-loop electrochemical potentiokinetic reactivation（DL-EPR） tests. The results show that the partial replacement of C by N first reduces and then increases the size and content of precipitates in high nitrogen MSSs, and converts the dominant precipitates from M23C6 to M2N,furthermore first improves and then deteriorates the IGC resistance. The high nitrogen MSS containing medium C and N contents provides good combination of mechanical properties and IGC resistance.
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