| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
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| Presentation Title |
Effect of Pre-straining on High Strain Rate Compression Behavior of a Complex Concentrated Alloy Exhibiting Transformation Induced Plasticity |
| Author(s) |
Ravi Sankar Haridas, Priyanka Agrawal, Jeffrey T Lloyd, Rajiv Mishra |
| On-Site Speaker (Planned) |
Ravi Sankar Haridas |
| Abstract Scope |
Metastability-based alloy design strategy enabled engineering of complex concentrated alloys (CCAs) which exhibit transformation induced plasticity (TRIP) under deformation. Sequential evolution of deformation mechanisms such as slip, twinning, and transformation in both parent and transformed phases provided excellent strength-work hardening-ductility synergy to the alloy. Inclusion of microstructural interfaces in the form of twin boundaries and martensitic boundaries by pre-straining showed improved mechanical properties in TRIP CCAs via massive interfacing. Present study investigated the effect of static pre-compression on the dynamic response of a TRIP Fe38.5Mn20Co20Cr15Si5Cu1.5 CCA in homogenized and friction stir processed (FSP) conditions. Primary martensitic bands formed during static compression acted as precursors for secondary martensitic band formation and deformation twinning, thereby imparting excellent resistance to the alloy at high strain rate via massive interfacial strengthening. Also, the grain refinement by FSP restricted the interface formation during pre-compression, and resulted in alternate dynamic response and deformation evolution. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Other, Other |