Bauschinger effect and recovery heat treatment of 10CrNi8MoV steel

doi:10.13251/j.issn.0254-6051.2024.08.019

Abstract

Abstract: Bauschinger effect of quenched-and-tempered 10CrNi8MoV steel was studied at unidirectional tensile deformation of 0.5%-5%. The results show that the yield strength of the tested steel decreases rapidly in reverse compression test when the deformation is less than 1%, and the rate of decrease becomes slower when the deformation is greater than 1%. The Bauschinger effect is mainly attributed to the back stress generated during tensile deformation, and the magnitude of the back stress is mainly related to the initial dislocation density and the ability of the material to accommodate new dislocations. When tempered at 400-600 ℃ for 1.5 h, the back stress is released, which significantly improves the Bauschinger effect of the tested steel.

Key words: Bauschinger effect, yield strength, back stress, heat treatment

CLC Number:

TG161

Guo Haodong, Yang Chaofei, Sun Lei, Zhang Yuxiang, Huang Dong, Tong Zhiyuan. Bauschinger effect and recovery heat treatment of 10CrNi8MoV steel[J]. Heat Treatment of Metals, 2024, 49(8): 119-123.

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