About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Metastable Phases and Phase Equilibria: Towards Designing the Next Generation of Alloys
|
| Presentation Title |
Towards Work-hardenability of Ti-6Al-4V Through a Quenching and Partitioning Approach |
| Author(s) |
Odeline Dumas, Benjamin Hary, Guilhem Martin, Fan Sun, Charlotte de Formanoir, Frédéric Prima, Stéphane Godet |
| On-Site Speaker (Planned) |
Odeline Dumas |
| Abstract Scope |
A quenching and partitioning strategy has been developed to provide insight into the possibilities to reach a work-hardening capacity very rarely reported in Ti-6Al-4V. Indeed, it was recently demonstrated that a sub-transus thermal treatment followed by water quenching could generate an α + α’ microstructure displaying a high work-hardening, strength and ductility.
We performed a series of ‘quenching’ treatments using several solutionizing temperatures. The volume fraction of each phase, the size, the chemistry and the interfaces of the martensite are taken as microstructural variables to modify the work-hardenability of dual-phase Ti-6Al-4V. Then, annealing of the dual-phase microstructure was performed to bring about progressive martensite decomposition also involving a ‘partitioning’ of the alloying elements.
Martensite was shown to be a very heterogeneous and discontinuous medium in which interfaces play a crucial role in the capacity of the material to progressively transform during the deformation and harden at a macroscopic scale. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |