| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Solid Phase Processing Symposium
|
| Presentation Title |
Multimodal Analysis of Microstructural Evolution of Metallic Alloys under Shear Deformation |
| Author(s) |
Arun Devaraj, Bharat Gwalani, Tamas Varga, Changyong Park, Luciano Bergmann, Jorge Dos Santos, Peter Staron, Benjamin Klusemann, Tiffany Kaspar, Peter Sushko, Suveen Mathaudhu, Cynthia Powell |
| On-Site Speaker (Planned) |
Arun Devaraj |
| Abstract Scope |
In order to develop shear-based solid phase processing methods for achieving bulk nanostructured metallic alloys, we aim to better understand the fundamental atomic scale mechanisms of mass and energy transfer in materials under shear deformation. To achieve this aim, we employed synchrotron-based in situ and ex situ high-energy x-ray diffraction capabilities under high pressure, with or without shear deformation. We used a diamond anvil cell, as well as the FlexiStir in-situ friction stir and processing system. The obtained synchrotron-based XRD results were correlated with detailed microstructural characterization before and after shear deformation using transmission electron microscopy and atom probe tomography. Our results on shear induced structural and chemical modifications of several model metallic alloys such as Al-Si, Cu-Nb and Cu-Ni provide new insights on the potential role of shear deformation in formation of metastable states, as well as in modifying the phase transformation pathways of these alloy systems. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |