Microstructure and Properties of Sorbite Stainless Steel Designed by “Hybrid” Idea
MA Xiaolei1, ZHANG Chengcheng1, ZHANG Chaolei1, MA Xiaoyi2, ZHAO Haidong3, FANG Wen1
1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2 School of Mechanical Engineering, Qinghai University, Xining 810016, China; 3 Qinghai Special Steel Engineering Technology Research Center, Xining Special Steel Co. Ltd, Xining 810005, China
Abstract: Microstructures, mechanical properties and corrosion resistance of a new high-strength sorbite stainless steel were analyzed and evaluated, which was designed based on the concept of “hybrid”. Furthermore, the sorbite stainless steel was compared with other typical steels and its application prospects were discussed. Results showed that the microstructure of sorbite stainless steel was similar to that of the martensitic stainless steel. The strength and toughness of the sorbite stainless steel matched well and could be regulated in a wide range. The formability and impact properties were favorable as well. The corrosion resistance of the sorbite stainless steel was comparable to or slightly worse than 201 austenitic stainless steel, while it was slightly better than 410 martensitic stainless steel. Therefore, the application prospects of the sorbite stainless steel is board in the field of corrosion-resist structural engineering.
1 Gholinia A, Humphreys F J, Prangnell P B. Materials Science and Technology, 2000, 16(11-12), 1251. 2 Zhao H Y, Wang G D, Liu X H, et al. Automobile Technology & Mate-rial, 2003 (10), 4(in Chinese). 赵洪运, 王国栋, 刘相华, 等. 汽车工艺与材料, 2003 (10), 4. 3 http://surface.mechanical-tech.jp/node/2448, 2017-02-10. 4 Dong H, Wang M Q, Weng Y Q. Iron & Steel, 2010, 45(7), 1(in Chinese). 董瀚, 王毛球, 翁宇庆. 钢铁, 2010, 45(7), 1. 5 Jiang S, Wang H, Wu Y, et al. Nature, 2017, 544(7651), 460. 6 He B B, Hu B, Yen H W, et al. Science, 2017, 357(6355), 1029. 7 Wang Q. Domestic independent research and development of Sorbite high-strength stainless structural steel, China Metallurgical News, 2017-12-19 (001)(in Chinese). 王庆. 国内自主研发索氏体高强不锈结构钢, 中国冶金报, 2017-12-19 (001). 8 http://www.ovako.com/ Products/Hybrid-Steel/. 9 Standard promotes the development and application of high-strength stainless steel structural steel, World Metals, 2017-12-12 (F01)(in Chinese). 标准促进索氏体高强不锈结构钢研发应用, 世界金属导报, 2017-12-12 (F01). 10 Jia F X. Stainless steel processing technology, Chemical Industry Press, China, 2013(in Chinese). 贾凤翔. 不锈钢加工技术, 化学工业出版社, 2013. 11 Jin S Q, Zhao Z D.Physics Examination and Testing, 1992 (1), 40(in Chinese). 金淑荃, 赵宗鼎. 物理测试, 1992(1), 40.