High temperature deformation behavior and processing map of Incoloy901 alloy

doi:10.13251/j.issn.0254-6051.2020.09.006

Abstract

Abstract: Hot deformation behavior of Incoloy901 alloy at deformation temperature between 950-1150 C,strain rate between 0.005-1 s and true strain of 0.6 was studied with Gleeble-3800 thermal simulator machine.The results show that the true stress-strain curve of Incoloy901 alloy presents dynamic recrystallization characteristics when the deformation temperature is higher than 1000 C and the strain rate is greater than0.01 s.According to the stress-strain curve,the constitutive equation and hot working diagram of Incoloy901 alloy are constructed,and the deformation activation energy Q=439.401 kJ/mol is obtained.The optimal hot work ing process consists of deformation at temperature of 1050-1 150 C with strain rate between 0.005-0.1 s-1.Within this process range,the high temperature deformation power dissipation cofficient (η) of the alloy is higher,up to 37%,and better dynamic recrystallization structure can be obtained.

Key words: Incoloy901 alloy, high temperature compression, processing map, constitutive equation

CLC Number:

TG132.3

Chen Peng, Guo Chuangli, Gao Yuan, Xi Shengqi, Wang W enbin. High temperature deformation behavior and processing map of Incoloy901 alloy[J]. Heat Treatment of Metals, 2020, 45(9): 41-45.

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