Hot deformation behavior and hot processing map of as-HIPed FGH96 alloy

doi:10.13251/j.issn.0254-6051.2022.07.011

Abstract

Abstract: Compression experiments of hot isostatic pressed FGH96 alloy at different temperatures and strain rates were carried out by Gleeble-3800 thermal simulation compression testing machine. The high temperature hot deformation behavior of the FGH96 alloy at deformation temperatures of 1040, 1070, 1100 and 1130 ℃, strain rates of 0.001, 0.01, 0.1 and 1 s^-1 and the maximum true strain of 0.7 were studied. The true stress-true strain curve was analyzed and the constitutive equation was established, and the hot processing maps were constructed by Origin software, and the optical hot processing parameters were determined combined with the effect of deformation temperature and strain rate on microstructure. The results show that the true stress-true strain curve of hot isostatic pressed FGH96 alloy shows typical dynamic recrystallization characteristics, and the peak stress increases with the decrease of deformation temperature and the increase of strain rate. Combined with constitutive equation, hot working diagram and microstructure, the optical hot processing area of the FGH96 alloy is 1060-1080 ℃ and 0.0001-0.004 s^-1.

Key words: FGH96 alloy, hot deformation behavior, constitutive equation, hot processing map

CLC Number:

V256

Chen Leilei, Qu Zonghong, Wang Zeyu, Lai Yunjin, Liang Shujin. Hot deformation behavior and hot processing map of as-HIPed FGH96 alloy[J]. Heat Treatment of Metals, 2022, 47(7): 63-70.

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