About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Phase Transformations and Microstructural Evolution
|
Presentation Title |
Deformation induced transformation: Alloy Design with FCC-HCP-BCC Burgers Transformation Triangle as the framework |
Author(s) |
Priyanka Agrawal, Amit Singh, Roopam Jain, Supreeth Gaddam, Rajiv S. Mishra |
On-Site Speaker (Planned) |
Priyanka Agrawal |
Abstract Scope |
Transformative complex concentrated alloys (CCAs) provide opportunities for tunable performance by manipulating deformation mechanisms - transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP). A compositional search was carried out with the Burgers Transformation Triangle as the framework to open up the space for deformation-induced transformation alloys for FCC, BCC, and HCP metallic systems. This combined metastability and microstructural engineering to activate hierarchical deformation mechanisms for enhanced dynamic performance. The current work took the CALPHAD approach to identify anchoring elements exhibiting allotropic transformation, and elements affecting stacking fault energy to explore compositional effects, thus understanding the FCC-HCP-BCC transformation paths. The anchoring element is defined as the element governing the aimed allotropic transformation by acting as the base element. Ti and Zr-based CCAs (BCC-HCP) and Co-based CCAs (FCC-BCC) were successfully designed to cover various transformation paths, exhibiting improved properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, High-Entropy Alloys, ICME |