Deformation Characteristics and Dynamic Recrystallization Model of Cr-Mo High Temperature Ferritic Steel
LUO Rui1, CHEN Leli1, CAO Yun1, ZHOU Haotian1, CUI Shugang1, HAN Min2, PEI Changlei3, CHENG Xiaonong1, GAO Pei2
1 School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China 2 Jiangsu Yinhuan Precision Steel Pipe Co., Ltd., Yixing 214203, China 3 School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
Abstract: Advanced Gleeble thermal simulation technology was used to carry out the hot compression tests of Cr-Mo high temperature ferritic steel 12CrMoG at 950—1 150 ℃ and 0.001—10 s-1. The deformation characteristics and dynamic recrystallization behaviour of the steel were systematically studied. The experimental results show that the flow curves have an obvious trend of dynamic recrystallization at high temperature and low strain rate; the constitutive model with strain of 0.2 was constructed, and the activation energy of hot deformation is 384.54 kJ·mol-1, which indicates that 12CrMoG steel has excellent hot working performance; the hot processing maps at different strains were constructed. Combining the microstructure analysis, the flow instability zone of hot deformation was avoided and the optimum hot working windows under different strains were defined. The critical dynamic recrystallization model and volume fraction model were constructed based on the Avrami equation. The linear relationship between critical stress and peak stress was determined, and the dynamic recrystallization behaviour during high temperature deformation was predicted. This study provides scientific guidance for practical hot working process and engineering application of 12CrMoG high temperature ferrite steel.
1 Han B L. Study on microstructure and properties of T22/800H joints by TIG welding. Master’s Thesis, Jiangsu University, China, 2017(in Chinese). 韩秉霖. T22/800H异质TIG焊接接头组织和性能的研究.硕士学位论文, 江苏大学,2017. 2 Deng P A. Development of T22 alloy high pressure boiler tube. Master’s Thesis, Central South University, China, 2006(in Chinese). 邓丕安. T22合金高压锅炉管的研制. 硕士学位论文, 中南大学, 2006. 3 Li X Y. Study on mechanism of pulling concave of seamless steel tube push bench process of T22 steel. Master’s Thesis, Anhui University of Technology, China, 2018(in Chinese). 李修叶. T22钢无缝钢管顶管过程拉凹机理研究. 硕士学位论文, 安徽工业大学,2018. 4 Aumpava K, Kittichai F. Science Direct, 2018, 5, 9244. 5 Niraj B, Harpreet S, Satya P. Applied Surface Science, 2009, 255, 6862. 6 Khushdeep G, Hazoor S, Rakesh B. International Journal of Minerals Metallurgy and Materials, 2019, 26(3), 337. 7 Rutash M, Buta S S. Transactions of the Indian Institute of Metals, 2018, 71(8), 1985. 8 Natarajan S, Kumaresh B S P. Materials Science and Engineering A, 2006, 432, 47. 9 Ravindra K, Tewari V K, Satya P. Journal of Materials Engineering and Performance, 2009, 18(7), 959. 10 Zhu Z L, Khan H I, Cao Q, et al. High Temperature Material Processes, 2019, 38, 476. 11 Luo R. The design and fabrication of a new austenitic heat-resisting alloy, and its workability and deformation mechanism. Ph.D. Thesis, Jiangsu University, China, 2016(in Chinese). 罗锐. 新型奥氏体耐热合金的设计、制备及其热变形行为与机理研究.博士学位论文, 江苏大学, 2016. 12 Liu G W, Han Y, Shi Z Q, et al. Materials and Design, 2014,53, 662. 13 Wu H, Wen S P, Huang H, et al. Journal of Alloys and Compounds, 2016, 685, 869. 14 He G A, Liu F, Si J Y, et al. Materials and Design, 2015, 87, 256. 15 Dharmendra C, Rao K P, Zhao N F, et al. Materials Science and Engineering A, 2014, 606, 11 16 Ebrahimia G R, Keshmiria H, Momenib A, et al. Materials Science and Engineering A, 2011,528, 7488. 17 Luo R, Cheng X N, Xu G F, et al. Chinese Journal of Rare Metals, 2017, 41(2), 132(in Chinese). 罗锐,程晓农,徐桂芳,等. 稀有金属,2017, 41(2), 132. 18 Wusatowska-Sarnek A M, Miura H, Sakai T. Materials Science and Engineering A, 2002,323, 177. 19 Luo R, Zheng Q, Tang Z D, et al. High Temperature Material Processes, 2017, 36(5), 467. 20 Rezaei A H R, Shahsvari P. Journal of Alloy and Compounds, 2016, 687, 263. 21 Satheesh K S S, Raghu T, Bhattacharjee P P, et al. Journal of Alloy and Compounds, 2016, 681, 28. 22 Sun F, Zhang J X. Transactions of Materials and Heat Treatment, 2011, 32(10), 1(in Chinese). 孙飞,张建新.材料热处理学报,2011, 32(10), 1. 23 Xi T, Yang C G, Shahzad M B, et al. Materials and Design, 2015, 87, 303. 24 Ryan N D, Mcqueen H J. Journal of Materials Processing Technology, 1990, 21, 177. 25 Cao Y, Di H S, Zhang J C, et al. Acta Metallurgica Sinica, 2012, 48(10), 1175. 26 Han Y, Yan S, Yin B G. Vacuum, 2018, 148, 78. 27 Zhang C, Zhang L W, Shen W F, et al. Materials & Design, 2016, 90, 804. 28 Wei H L, Liu G Q, Xiao X. Materials Science and Engineering A, 2013, 573, 215. 29 Cao F R, Xia F, Xue G Q. Materials & Design, 2016, 92,44.
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2020, Vol. 34 
