Back to Search
Start Over
Promoting direct and ultrafast precipitation of the α phase in the metastable Ti-10V-6Cu alloy
- Source :
- Materials Research Letters, Vol 12, Iss 2, Pp 108-115 (2024)
- Publication Year :
- 2024
- Publisher :
- Taylor & Francis Group, 2024.
-
Abstract
- Direct aging of water-quenched metastable β-titanium alloys usually follows the sequence: rapid growth of ωiso and then slow transformation into α. To inhibit ωiso growth and promote α nucleation, 6% pre-deformation was introduced in Ti-10V-6Cu alloy before 500°C/60s aging. An ultrafast α-formation and a few α-free kink-bands are observed, indicating the alteration of the precipitation sequence. For α-nucleation without ωiso as the sites, it shows that O' nanodomains induced by stress accumulation around slip bands mediate the ultrafast nucleation of hcp-α structure, while dislocation pipe diffusion accelerates the necessary phase separation. This provides new insights into regulating precipitation kinetics of age-hardenable β-titanium alloys.
Details
- Language :
- English
- ISSN :
- 21663831
- Volume :
- 12
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Materials Research Letters
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.8db4bb45426e414386ea66bc2fd242b0
- Document Type :
- article
- Full Text :
- https://doi.org/10.1080/21663831.2023.2300816