Effects of rolling and annealing on microstructure and properties of T9S titanium alloy sheet

doi:10.13251/j.issn.0254-6051.2020.12.026

Abstract

Abstract: Effects of rolling deformation and annealing temperature on microstructure and mechanical properties of T9S titanium alloy sheet were studied. The results show that with the increase of rolling deformation of finished products, the microstructure of the sheet is finer, and the equiaxed α phase, the elongated α phase and boundary β phase are formed after annealing, but the deformation flow line is obvious, meanwhile, the room temperature strength and hardness of the sheet increase, the elongation decreases, and the elastic modulus increases. With the increase of annealing temperature, the room temperature strength and hardness of the sheet gradually decrease, the elongation gradually increases, the transverse elastic modulus decreases, and the longitudinal elastic modulus first increases and then decreases. After annealing at 750-790 ℃ for 45 min with air cooling, the sheet can obtain a better match between strength and plasticity.

Key words: T9S titanium alloy sheet, rolling, annealing, microstructure, mechanical properties

CLC Number:

TG146.2⁺3

Zhang Qiang, Li Yang, Hao Xiaobo, Li Bobo, Zhou Hua, Liu Yinqi. Effects of rolling and annealing on microstructure and properties of T9S titanium alloy sheet[J]. Heat Treatment of Metals, 2020, 45(12): 132-135.

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