Phase Transformations, Strength, and Modulus of Elasticity of Ti–15Mo Alloy Obtained by High-Pressure Torsion


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Аннотация

This paper is devoted to structure formation and phase transformations in the metastable Ti–15Mo β alloy during high-pressure torsion at room temperature. Transmission electron microscopy and X-ray diffraction analysis show that grain refinement takes place together with a β ↔ ω phase transformation and a nonmonotonic change in the volume fraction of the ω phase when the true strain is increased. The effect of the ω phase on the strength and the elastic properties of the alloy is considered. It is shown that nanostructure formation with a minimum amount of the ω phase is responsible for the marked hardening of the Ti–15Mo alloy while retaining its relatively low elastic modulus.

Авторлар туралы

S. Gatina

Ufa State Aviation Technical University

Email: semenova-ip@mail.ru
Ресей, Ufa, 450008

I. Semenova

Ufa State Aviation Technical University

Хат алмасуға жауапты Автор.
Email: semenova-ip@mail.ru
Ресей, Ufa, 450008

E. Ubyyvovk

St. Petersburg State University

Email: semenova-ip@mail.ru
Ресей, St. Petersburg, 199034

R. Valiev

Ufa State Aviation Technical University; St. Petersburg State University

Email: semenova-ip@mail.ru
Ресей, Ufa, 450008; St. Petersburg, 199034

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