Dependence of α-phase particle morphology in aged metastable β Ti-15Mo alloy on the shear deformation degree

V.V. Polyakova, S.A. Gatina ORCID logo , A.G. Stotskiy, A.V. Polyakov ORCID logo , I.P. Semenova показать трудоустройства и электронную почту
Получена 05 декабря 2023; Принята 12 февраля 2024;
Эта работа написана на английском языке
Цитирование: V.V. Polyakova, S.A. Gatina, A.G. Stotskiy, A.V. Polyakov, I.P. Semenova. Dependence of α-phase particle morphology in aged metastable β Ti-15Mo alloy on the shear deformation degree. Письма о материалах. 2024. Т.14. №1. С.39-44
BibTex   https://doi.org/10.48612/letters/2024-1-39-44

Аннотация

This work shows the influence of the degree of severe deformation on the morphological features of α-phase particles in aged metastable β-titanium alloy Ti-15Mo.Effect of the shear strain on the microstructure formation in metastable β Ti-15Mo alloy has been studied. The material was subjected to cold severe plastic deformation (SPD) by two methods, high-pressure torsion (HPT) and equal-channel angular pressing (ECAP). Grains with sizes less than 1 μm oriented in the straining direction, shear bands and developed dislocation substructure were observed in the microstructure after ECAP. An ultrafine-grained structure with equiaxed β-phase grains with an average size of 150 nm was formed in Ti-15Mo after HPT. This paper discusses the peculiarities of α-phase particle morphology after aging at 600°C depending on the type of structure formed during SPD.

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1. Russian Science Foundation - 23-79-00074