Heat treatment of TB8 titanium alloy with high strength and toughness

doi:10.13251/j.issn.0254-6051.2021.09.019

Abstract

Abstract: Effects of solution treatment and aging process on microstructure and properties of TB8 titanium alloy bars were studied. The results show that single equiaxed β grain of the alloy is obtained after 890 ℃ solution treatment. With solution time increasing, the strength reduces gradually. After aging at 520 ℃ for different time, a large number of secondary α phases are precipitated in β grains, which increases the aging strength of the bar. When aging for 8 h, the strength of the alloy reaches 1286 MPa and good plasticity is retained. The recommended solution treatment and aging system of the TB8 titanium alloy bar is 890 ℃×30 min, WQ+520 ℃×8 h, AC.

Key words: TB8 titanium alloy, high strength and toughness, solution and aging, microstructure and properties

CLC Number:

TG166.5

Li Minna, Ma Baofei, Guo Jinming, Wu Chen, Xiao Songtao. Heat treatment of TB8 titanium alloy with high strength and toughness[J]. Heat Treatment of Metals, 2021, 46(9): 116-119.

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