| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Solid Phase Processing Symposium
|
| Presentation Title |
Structural and Compositional Changes During Shear Assisted Processing of Materials |
| Author(s) |
Bharat Gwalani, Matthew Olszta, Yang He, Jinhui Tao, Chongmin Wang, Tiffany Kaspar, Aashish Rohatgi, Peter Sushko, Arun Devaraj |
| On-Site Speaker (Planned) |
Bharat Gwalani |
| Abstract Scope |
Solid phase processing (SPP) of materials uses frictional and shear forces to transforms materials resulting in a noticeable microstructural refinement and nanoscale phases enhancing mechanical properties while fully avoiding melting route. High-speed mass redistribution with concurrent heating of the material, make the atomic-scale mechanisms in such processes quite complex. To understand this process and guide future modifications in SPP techniques we are developed a systematic experimental approach to decouple the effects of shear force, temperature, material properties, and deformation rates, and develop a fundamental atomic-scale understanding of microstructural evolution during processing. We synthesized model binary alloys with well-controlled structural and compositional features. Then we used a tribometer to emulate SPP conditions in small material volumes, thus enabling us to reveal micro-to-atomic length-scale mass transfer. Compositional patterning, forced solutionization, and grain refinement are observed in the immiscible and partially miscible systems. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |