The phenomenon of formation and low-temperature diffusion transformation of metastable solid solutions with the release of dispersed particles of intragranular widmanstatten alpha phase in heat-resistant titanium alloys

Kashapov O.S., Pavlova T.V., Kalashnikov V.S., Zavodov A.V.
UDC
669.295
DOI
10.18577/2307-6046-2018-0-8-3-22
Article PDF (Russian) (2.19 MB)
How to cite
Kashapov O.S., Pavlova T.V., Kalashnikov V.S., Zavodov A.V. The phenomenon of formation and low-temperature diffusion transformation of metastable solid solutions with the release of dispersed particles of intragranular widmanstatten alpha phase in heat-resistant titanium alloys // Proceedings of VIAM. 2018. No. 8. DOI: 10.18577/2307-6046-2018-0-8-3-22. URL: https://test.viam.ru/en/journal/2018/8/1
Keywords
titanium alloys, thermal treatment, microstructure, electron microscopy, diffusion transformation, strength, Widmanstetten alpha.
Abstract

In the article discussed the phenomenon of formation and low-temperature diffusion transformation of metastable solid solutions with the release of dispersed particles of intragranular Widmanstatten α in Russian heat-resistant titanium alloys. It is shown that the intragranular Widmanstatten alpha phase can be formed at the final stage of cooling of the semi-finished product after heat treatment to a solid solution, as well as a result of aging. Examples of heterogeneous structures in various semi-finished products and details are given. The change of mechanical properties of heat-resistant titanium alloys in connection with structural dispersion hardening is considered.

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