Acta Metall Sin  2004, Vol. 40 Issue (3): 263-269     DOI:

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Influence of Austenite Deformation on the Microstructure Strength and Toughness of the Grain Boundary Allotriomorphic Ferrite/Granular Bainite (F GBA/Bg) Duplex Steel

WANG Jianping; YANG Zhigang; BAI Bingzhe; FANG Hongsheng;FENG Yong; XU Hongqing

Department of Materials Science and Engineering; Tsinghua University

WANG Jianping; YANG Zhigang; BAI Bingzhe; FANG Hongsheng; FENG Yong; XU Hongqing. Influence of Austenite Deformation on the Microstructure Strength and Toughness of the Grain Boundary Allotriomorphic Ferrite/Granular Bainite (F GBA/Bg) Duplex Steel. Acta Metall Sin, 2004, 40(3): 263-269 .

Abstract References Related Articles Recommended Metrics Download:  PDF(26143KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The plane strain compressive deformation experiments with various deformation amounts have been carried out on the grain boundary allotriomorphic ferrite/granular bainite F GBA/G Bduplex steel at temperatures above A r3 using Gleeble--1500 machine. SEM and TEM observations indicate that the prior austenite deformation not only refines the allotriomorphic ferrite grain but also promotes the nucleation of intragranular ferrite, both of which in turn contribute to the refinement of granular bainite cluster including its ferrite platelets and MA islands. A model was proposed to elucidate the effect of prior deformation on the refinement of granular bainite cluster and its detailed microstructure. For specimens deformed by 30% at 780℃ and subsequent air cooling, F GBA grains of an average size less than 5 m and intragranular ferrite grains less than 3 m were gained. Compared with specimens without prior deformation, the Charpy V--notch (CVN) impact energy and Vickers hardness is increase from 43 J to 108 J and from 242 to 312, respectively. Key words:  grain refinement      austenite deformation      granular bainite            Received:  11 March 2003      ZTFLH:  TG142. 1   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors WANG Jianping YANG Zhigang BAI Bingzhe FANG Hongsheng FENG Yong XU Hongqing URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2004/V40/I3/263 [1] Hulka K, Hesterkamp F, Nachtel L. Processing, M(?)crostructure and Properties of HSLA Steels. Warrendale, PA: TMS, 1988:153 [2] Czyryca E J. Key Eng Mater, 1993; 84-85:491 [3] Garcia C I, Lis A K, Pytel S M, DeArdo A J. ISS Transactions, 1992; 13:103 [4] Chiaki OUCHI. ISIJ International, 2001; 41(6) : 542 [5] Fang H S, Xu P G, Bai B Z, Liu D Y. Heat Treat Met, 2000; 11:1(方鸿生,徐平光,白秉哲,刘东雨.金属热处理,2000;11:1) [6] Xu P G, Fang H S, Bai B Z, Wang Z J, Yang Z G, Huang J G. J Iron Steel Res Int, 2002; 9(2) : 33 [7] Gibbs R K, Hodgson P D, Parker B A. In: Liaw P K ed, Morris E. Fine Sympos(?)um, Warrendale, PA: TMS, 1991:73 [8] Yada H, Matsumura Y, Senuma T. In: Tamura I ed, Proceedings of the International Conference on Physical Metallurgy of Thermomechanical Processing of Steels and Other metals, Tokyo: Iron and Steel Institute of Japan, 1988:200 [9] Fang H S, Wang J J, Yang Z G, Li C M, Bo X Z, Zheng Y K. Bainite Transformation. Beijing: Science Press, 1999:11(方鸿生,王家军,杨志刚,李春明,薄祥正,郑燕康.贝氏体相变.科学出版社,1999:11) [10] Fang H S, Deng H J, Zhao R F, Zheng Y K. Mater Mech Eng, 1981; 5(1) :5(方鸿生,邓海金,赵如发,郑燕康.机械工程材料,1981;5(1) :5)\ [1] Xiaolin LI, Yang CUI, Baoliang XIAO, Dawei ZHANG, Zhao JIN, Zheng CHENG. Effects of On-Line Rapid Induction Tempering on Pricipitation Strengthening Mechanism of V(C, N) in V-N Microalloyed Steel[J]. 金属学报, 2018, 54(10): 1368-1376. [2] WANG Jianping; YANG Zhigang; BAI Bingzhe; FANG Hongsheng; FENG Yong; XU Hongqing. Influence of Austenite Deformation on the Microstructure Strength and Toughness of the Grain Boundary Allotriomorphic Ferrite/Granular Bainite (F GBA/Bg) Duplex Steel[J]. 金属学报, 2004, 40(3): 263-269 . No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed