Effect of Process Parameters on Microstructure and Hardening Mechanism of Economical Weathering Steel
PENG Tianen1, LIAN Zhiwei1, HE Bo2, HU Xuewen1,2, JIANG Bo1, LIU Yazheng1
1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083,China 2 Technical Center, Maanshan Iron & Steel Co., Ltd., Maanshan 243041, Anhui, China
Abstract: In this paper, the continuous cooling transformation of weathering steels with different compositions was analyzed by thermal simulation test. The microstructures and properties of the specimens at different coiling temperatures were investigated, and the hardening mechanism was analyzed. The results showed that the transformation of ferrite and pearlite occurred at lower than cooling rate of 10 ℃/s, and bainite transformation began when the cooling rate was higher than 10 ℃/s. The increase of Ni or P promoted the probability of bainite transformation. At low cooling rate, the hardening mechanisms for 0.14%Ni steel were mainly grain refinement and precipitation, while the mechanisms for low Ni steel and high P steel were mainly grain refinement. The maximum hardness could be obtained when the cooling rate was 10 ℃/s and the coiling temperature was between 580—620 ℃. Ni or P had little effect on the maximum hardness after coiling. After coiling process, precipitation strengthening became the main hardening mechanism. The precipitation strengthening of low Ni steel was increased by 13%, while the high P steel was increased by 7%, and that of the 0.14% Ni steel increased by 3%. The coiling process promoted precipitation strengthening of different experimental steels, especially for low Ni steel and high P steel.
彭天恩, 连智伟, 何博, 胡学文, 蒋波, 刘雅政. 工艺参数对经济型耐候钢显微组织及硬化机理的影响[J]. 材料导报, 2022, 36(2): 20120194-6.
PENG Tianen, LIAN Zhiwei, HE Bo, HU Xuewen, JIANG Bo, LIU Yazheng. Effect of Process Parameters on Microstructure and Hardening Mechanism of Economical Weathering Steel. Materials Reports, 2022, 36(2): 20120194-6.
1 Liu X C, Zhang Z Z, Wu N, et al. China Metallurgy, 2020, 30(8), 56(in Chinese). 刘晓翠, 张转转, 吴耐, 等. 中国冶金, 2020, 30(8), 56. 2 Liu X C, Zhang Z Z, Liu K, et al. Steel Rolling, 2019, 36(6), 17(in Chinese). 刘晓翠, 张转转, 刘锟, 等. 轧钢, 2019, 36(6), 17. 3 An H Y, Liu Z Y, Zheng W C, et al. SichuanMetallurgy, 2016, 38(4), 37(in Chinese). 安海玉, 刘志勇, 郑文超, 等. 四川冶金, 2016, 38(4), 37. 4 Yao J T, Sun L, An H L, et al. Special Steel, 2019, 40(3), 59(in Chinese). 姚纪坛, 孙力, 安会龙, 等. 特殊钢, 2019, 40(3), 59. 5 Liu X C, Zhang Z Z, Li W Y, et al. Steel Rolling, 2019, 36(4), 31(in Chinese). 刘晓翠, 张转转, 李文远, 等. 轧钢, 2019, 36(4), 31. 6 Zhou C, Zhang C Y, Li Y X, et al. Transactions of Materials and Heat Treatment, 2020, 41(7), 126(in Chinese). 周聪, 张晨洋, 李运鑫, 等. 材料热处理学报, 2020, 41(7), 126. 7 Yu Q. Journal of Iron and Steel Research, 2007, 19(11), 1 (in Chinese). 于千. 钢铁研究学报, 2007, 19(11), 1. 8 Liu R, Chen X P, Wang X D, et al. Corrosion Science and Protection Technology, 2016, 28(2), 122 (in Chinese). 刘芮, 陈小平, 王向东, 等. 腐蚀科学与防护技术, 2016, 28(2), 122. 9 Nishimura T, Katayama H, Noda K, et al.Corrosion Science, 2000, 42(9), 1611. 10 Cheng X Q, Jin Z, Liu M, et al. Corrosion Science, 2017, 115, 135. 11 Chen A H, Yue C X, Wu S J, et al. Heat Treatment of Metals, 2015, 40(2), 35 (in Chinese). 陈爱华, 岳重祥, 吴圣杰, 等. 金属热处理, 2015, 40(2), 35. 12 Wang W L, Yan Y F. Material Research Innovations, 2015, 19(S5), 1102. 13 Hosseini F A R, Mousavi A S H, Abbasi S M. Materials Science and Engineering A, 2019, 746, 384. 14 Zhang X, Li D Q. Iron Steel Vanadium Titanium, 2011, 32(4), 16(in Chinese). 张熙, 李德强. 钢铁钒钛, 2011, 32(4), 16. 15 Garcia-Mateo C, Bhadeshia H. Materials Science and Engineering A, 2004, 378(1-2), 289. 16 Tian Y, Zhao Z X, Wu X L, et al. Hebei Metallurgy, 2007(5), 10 (in Chinese). 田允, 赵征志, 吴新朗, 等. 河北冶金, 2007(5), 10. 17 Yong Q L, Ma M T, Wu B R. Microalloyed steel-physical and mechanical metallurgy, Mechanical Industry Press, China, 1989, pp.22(in Chinese). 雍岐龙, 马鸣图, 吴宝榕. 微合金钢—物理和力学冶金, 机械工业出版社, 1989, pp.22. 18 Yong Q L. The second phase in steel materials, Metallurgical Industry Press, China, 2006, pp. 361(in Chinese). 雍岐龙. 钢铁材料中的第二相, 冶金工业出版社, 2006, pp.361. 19 Petch N J. Journal of the Iron and Steel Institute, 1953, 174(19), 25. 20 Wang Y P. Chemical and General Machinery, 1982(12), 59(in Chinese). 王印培. 化工与通用机械, 1982(12), 59.
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2022, Vol. 36 
