Effect of deformation on mechanical properties of Ti80G alloy

doi:10.13251/j.issn.0254-6051.2023.09.016

Abstract

Abstract: φ93 mm Ti80G titanium alloy bar was forged with a deformation between 10%-40%, and the forged rod was annealed at 900 ℃ to study the effect of forging deformation on the mechanical properties of the annealed titanium alloy. The results show that with the increase of forging deformation, primary α phase volume fraction reduces and precipitation α volume fraction increases, the strength at room temperature and high temperature increases, the ductility first increases and then decreases, and the impact property increases. At 30% deformation, the Ti80G alloy achieves the best mechanical properties match, with room temperature/high temperature tensile strength of 901.0 and 565.0 MPa, room temperature/high temperature yield strength of 792.5 and 482.0 MPa, room temperature/high temperature elongation after fracture of 17.25% and 22.00%, and room temperature/high temperature percentage reduction of area of 45.0% and 69.0%, respectively. And impact absorbed energy reaches 100.60 J.

Key words: Ti80G titanium alloy bar, deformation, annealing, mechanical properties

CLC Number:

TG156.1

Han Weisong, Du Feng, Li Jianfeng, Zhu Baohui, Shen Lihua, Liu Yi, Wang Peng. Effect of deformation on mechanical properties of Ti80G alloy[J]. Heat Treatment of Metals, 2023, 48(9): 95-98.

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