About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Titanium Technology
|
Presentation Title |
On the Relationships between Twinning and Stress-induced Martensite in Superelastic Beta Titanium Alloys |
Author(s) |
Emmanuel Bertrand, Philippe Castany, Yang Yang, Isabelle Braems, Thierry Gloriant |
On-Site Speaker (Planned) |
Emmanuel Bertrand |
Abstract Scope |
β superelastic titanium alloys are subject to many deformation mechanisms that can be activated successively or simultaneously during deformation.
Post-mortem observations show the presence of twins in the beta phase: most often {332}<113> and more rarely {112}<111>. These twins are most often formed under stress, when the material has undergone a reversible martensitic transformation in the α'' phase.
A Schmid factor analysis of the twins shows that the {112}<111> twins in superelastic alloys are formed in the opposite direction to the twins observed in the stable centred cubic structures. The role of the martensitic transformation on the activation of this "anti-twinning" will be discussed. |
Proceedings Inclusion? |
Planned: |