| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Understanding Variant Selections during Phase Transformation and Deformation Twinning in BCC Metals |
| Author(s) |
Avinash M. Dongare, Aadhithyan Kannan, Ke Ma, Avanish Mishra |
| On-Site Speaker (Planned) |
Avinash M. Dongare |
| Abstract Scope |
The deformation response of BCC metals can have contributions from dislocation slip, deformation twinning, and phase transformation. While recent capabilities can use in situ diffraction studies to identify the fingerprints of these deformation modes, the interpretation of the plasticity contributions to the deformation response is challenging as this is limited to post-mortem characterization of unloaded microstructures. Molecular dynamics (MD) simulations can successfully capture various deformation modes in metals and complement experiments using simulated diffractograms at various stages of evolution. A newly developed ‘virtual texture’ (VirTex) analysis is able to characterize phase/twin variants in deformed microstructures and virtual diffraction simulations can identify their contributions to peak shifts and broadening behavior. This talk will highlight our efforts to understand the role of new capabilities to characterize the role of microstructure and stress states on phase/twin variant selections during the deformation of BCC metals (Fe, Ta) and during unloading. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Mechanical Properties, Phase Transformations |