Effect of cooling rate on phase composition and structure of VT6 titanium alloy after hydrogenating annealing

Panin P.V., Dzunovich D.А.
UDC
669.295
DOI
10.18577/2307-6046-2017-0-10-4-4
Article PDF (Russian) (669.4 KB)
How to cite
Panin P.V., Dzunovich D.А. Effect of cooling rate on phase composition and structure of VT6 titanium alloy after hydrogenating annealing // Proceedings of VIAM. 2017. No. 10. DOI: 10.18577/2307-6046-2017-0-10-4-4. URL: https://test.viam.ru/en/journal/2017/10/4
Keywords
titanium alloy VT6, hydrogenating annealing, cooling rate, phase composition, structure.
Abstract

The effect of cooling rate on structure formation processes upon hydrogenating annealing of VT6 alloy (Ti–6,25Al–4,1V% wt.) has been studied, the mentioned processes being governed by mechanism and kinetics of transformations in hydrogen-containing β-phase. It has been shown that cooling rate of 1 K/s gives the opportunity to reduce diffusion-based decomposition of hydrogen-containing β-phase in the samples subjected to hydrogenation at 850–900°С to a concentration of 0,6% wt. H and higher. Thus a single-phase β-structure is formed at room temperature, which is uncommon for the VT6 alloy upon equilibrium conditions.

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