Acta Metall Sin  1998, Vol. 34 Issue (3): 271-277    DOI:

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CONTINUOUS COOLING TRANSFORMATION BEHMIOUR OF DEFORMED AUSTENITE FOR PLASTIC DIE STEEL P20

LIU Dongsheng; WANG Guodong; LIU Xianghua; ZHEN Lidong(The State Key Laboratory of Rolling and Automation; Northeastern University; Shenyang 110006 SU Yongke; XU Hui Fushun Special Steel Corp.; Fushun 113001)

LIU Dongsheng; WANG Guodong; LIU Xianghua; ZHEN Lidong(The State Key Laboratory of Rolling and Automation; Northeastern University; Shenyang 110006 SU Yongke; XU Hui Fushun Special Steel Corp.; Fushun 113001). CONTINUOUS COOLING TRANSFORMATION BEHMIOUR OF DEFORMED AUSTENITE FOR PLASTIC DIE STEEL P20. Acta Metall Sin, 1998, 34(3): 271-277.

Abstract References Related Articles Recommended Metrics Download:  PDF(4130KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The continuous cooling transformation (CCT) diagrams of austenite in various states for steel P20 were constructed by means of the combined method of dilatometry and metallography. The influence of deformation process on the transformation behaviour and microstructure was investigated. The thermomechanically processed austenite was more stable than that treated by conventional hardening process. Polygonal ferrite transformation did not occur during continuous cooling at rate ranging from 0.2℃/s to 0.02℃/s. Deformed austenite caused itself mechanical stabilization, hence retarded the bainitic transformation to lower temperature.The experlinental results manifest that steel P20 treated by slowly continuous cooling through bainitic transformation region after hot rolling can produce granular microstructure and reveal hardness of HRC 35-38. Key words:  plastic die steel      hardening      transformation      granular bainite      deformed austenite      Received:  18 March 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I3/271 1赵自力.东北大学硕士学位论文,1995(Zhao Zili. Master Thesis, Northestern University,1995) 2Tsuzaki K,Fukasaku S,Tomota Y,Maki T.Mater Trans JIM,1991;32:222 3方鸿生,白秉哲,邓海金,赵如发,郑燕康,侯淑琴金属热处理学报,19822 3(2):78(Fang Hongsheng,Bai Bingzhe,Deng Haijin,Zhao Rufa,Zheng Yankang,Hou Shuqin.Trans Met Heat Treat,1982;3(2):78) 4Shipway P H, Bhadeshia H K D H. Mater Sci Technol, 1995; 11:1116 5Yang J R, Huang C Y, Hsieh W H, Chiou C S. Mate, 7tlz,Trans JIM, 1996; 37: 579 6Biss V; Cryderman R L. Metall Trans,1971; 2A: 2267 7李承基,胡梦怡.金属热处理学报,1981;2(1):23 (Li Chenaii, Hu Mengyi.Trans Met Heat Treat, Met Heat Treat,1981; 2(1): 23) [1] BAI Jiaming, LIU Jiantao, JIA Jian, ZHANG Yiwen. 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