Cold deformation behavior of GH4169 alloy

doi:10.13251/j.issn.0254-6051.2020.02.005

Abstract

Abstract:

The constitutive equation of GH4169 alloy during cold deformation was established by means of room temperature compression test, mathematical model fitting, optical microscope (OM), electron backscatter diffraction (EBSD) and microhardness test. The effect of cold deformation rate and deformation amount on the microstructure and properties of GH4169 alloy were studied. The results show that the work hardening law of GH4169 alloy basically conforms to Hollomon equation during cold deformation, in which the deformation rate has little effect on work hardening, and the deformation amount is the main factor affecting work hardening; with the increase of deformation, the deformation degree of grain increases; the low-angle grain boundary within grain increases with the deformation amount, and some low-angle boundaries change to high-angle ones. The microhardness of the alloy increases with the increase of deformation.

Key words: GH4169 alloy, cold deformation, microstructure, properties

CLC Number:

TG146.1⁺5

Wen Bo, Lü Xudong, Du Jinhui. Cold deformation behavior of GH4169 alloy[J]. HTM, 2020, 45(2): 23-28.

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