About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Atomistic Simulations Linked to Experiments to Understand Mechanical Behavior: A MPMD Symposium in Honor of Professor Diana Farkas
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Presentation Title |
Characterizing Variants During Phase Transformation and Twinning in BCC Microstructures During Deformation and Unloading |
Author(s) |
Phillip Tsurkan, Roshan Sebastian, Avinash M. Dongare |
On-Site Speaker (Planned) |
Avinash M. Dongare |
Abstract Scope |
Fe-based microstructures demonstrate a BCC → HCP phase transformation when deformed above a threshold pressure of ~13 GPa and reverse transform to the BCC phase upon loading. This BCC → HCP → BCC phase transformation can result in a distribution of twins in the bcc microstructure and is attributed to the Burgers pathway for selection of HCP phase variants during compression and the BCC phase variants during unloading. Molecular dynamics (MD) simulations can successfully capture various deformation modes in metals and complement the interpretation of experimental results. This talk will discuss the use of a novel virtual texture analysis tool (VirTex) that enables the creation of EBSD maps of the simulated microstructures to compare with experimental EBSD maps. The talk will discuss the the role of grain orientations on the variant selections during phase transformation of and the factors that influence the formation of transformation twins in pocrystalline Fe microstructures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Modeling and Simulation, Phase Transformations |