| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Stress-Induced Martensite and Martensite Twinning/Detwinning on the Deformation Behavior of TRIP/TWIP Ti Alloys |
| Author(s) |
Fan Sun, Bingnan Qian, Junhui Tang, Sucharita Banerjee, Philippe Vermaut, Rajarshi Banerjee, Frédéric Prima |
| On-Site Speaker (Planned) |
Fan Sun |
| Abstract Scope |
The deformation of metastable TRIP/TWIP Ti alloys can induce a martensitic transformation from beta matrix to orthorhombic alpha''. This transformation significantly influences the deformation process due to the vast array of correspondence variants and twinning systems, resulting in an augmented strain hardening rate and stable plastic flow. The combined effect of stress-induced martensite (SIM) and mechanical twinning leads to distinct deformation behavior in TRIP/TWIP Ti, such as Ti-12Mo. Moreover, in alloys with higher beta metastability, such as Ti-Nb, Ti-V, Ti-Ta systems, martensitic transformation can also occur independently during deformation, driving the plastic deformation via a beta to alpha'' transition. This is then followed by variant selection reorientation and secondary mechanical twinning/detwinning. This work presents an investigation into the roles of SIM in various TRIP/TWIP Ti alloys with different levels of beta metastability. The characterization integrates tensile testing with electron microscopy studies to discern the behaviors of martensite in these alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Titanium, Phase Transformations |