Texture, elastic anisotropy and thermal stability of commercially pure titanium prepared by room temperature ECAP

0570646 - FZÚ 2024 RIV GB eng J - Journal Article
Tesař, Karel - Koller, Martin - Vokoun, David - Tyc, Ondřej - Čech, J. - Sedlák, Petr
Texture, elastic anisotropy and thermal stability of commercially pure titanium prepared by room temperature ECAP.
Materials & Design. Roč. 226, Feb (2023), č. článku 111678. ISSN 0261-3069
R&D Projects: GA ČR(CZ) GA17-05360S; GA ČR(CZ) GA22-20181S; GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271 ; RVO:61388998
Keywords : equal channel angular pressing * ultrafine-grained grade 2 Ti * (0001) texture * resonant ultrasound spectroscopy * elastic anisotropy * defect annealing
OECD category: Condensed matter physics (including formerly solid state physics, supercond.); Materials engineering (UT-L)
Method of publishing: Open access

Severe plastic deformation of commercially pure titanium, leading to ultrafine-grained microstructure, can be used as an alternative to alloying to obtain better mechanical properties. In this work, ultrafine-grained grade 2 Ti, obtained by equal channel angular pressing, is investigated. A detailed study of the texture and the elastic anisotropy of the material, heat-treated at several annealing temperatures, is conducted, complemented by ex-situ and indirect in-situ thermal experiments, which shed light on the stability and evolution of microstructure and material properties. The results show that the elastic properties only slightly evolve during annealing in contrast to other properties, such as thermal expansion, internal friction or hardness. The elastic anisotropy is directly linked to the (0001) texture, thus outlining the importance and possibilities of texture-based design and tailoring of mechanical properties.
Permanent Link: https://hdl.handle.net/11104/0341966