Heat Treatment of Metals ›› 2023, Vol. 48 ›› Issue (6): 167-172.DOI: 10.13251/j.issn.0254-6051.2023.06.030

• Microstructure and Properties • Previous Articles     Next Articles

Hot deformation behavior and dynamic recrystallization law of GH2150 alloy

Lou Haonan1, Liu Jiaao2,3, Mei Feiqiang4, Cao Yichao1, Song Xiyu1, Zhang Weihong2   

  1. 1. Technique Center, Shenyang Liming Aero-Engine Co., Ltd., AECC, Shenyang Liaoning 110043, China;
    2. Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China;
    3. School of Materials Science and Engineering, University of Science and Technology of China, Hefei Anhui 230026, China;
    4. Shenyang Area 2nd Military Representative Room of Air Force Equipment Department, Shenyang Liaoning 110043, China
  • Received:2022-12-18 Revised:2023-04-10 Published:2023-08-11

Abstract: Hot deformation behavior and dynamic recrystallization evolution of GH2150 alloy under different test parameters were studied by hot compression test with Gleeble-3800 thermal simulation machine. The results show that in the range of 1000-1200 ℃, when the strain rate is 0.1-5 s-1 and the deformation amount is 30%, 50% and 70%, respectively, the peak stress of the alloy decreases with the increase of deformation temperature and decrease of strain rate. Combined with the true stress-true strain curves and Arrhenius formula, the hot deformation constitutive equation of the GH2150 alloy is obtained. The average relative error between the calculated and the actual results is 4.36%, and the correlation coefficient is R=0.992, showing in good agreement. It is found by drawing dynamic recrystallization diagram that large deformation is beneficial to increase the recrystallization fraction of the GH2150 alloy. The dynamic recrystallization behavior is mainly affected by deformation temperature at 50% deformation, and low strain rate at 70% deformation is more beneficial to the recrystallization.

Key words: GH2150 alloy, hot deformation, dynamic recrystallization, stress, strain

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