About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Effect of Temperature and Composition on Plastic Deformation Localization in Solid Solution-Strengthened FCC Alloys |
Author(s) |
Dhruv Anjaria, Aditya Srinivasan Tirunilai, Guillaume Laplanche, Jean-Charles Stinville |
On-Site Speaker (Planned) |
Dhruv Anjaria |
Abstract Scope |
The localization of plastic deformation in solid solution-strengthened FCC alloys, including Invar (FeNi36), CrCoNi, CrCoNiFeMn, CoNiV, and 316L was investigated from room to cryogenic temperatures. High-resolution digital image correlation reveals a temperature range for given compositions where plasticity is unusually homogeneous at the grain scale. Transmission electron microscopy demonstrates that this plastic deformation homogenization is related to a specific deformation regime where there is competition between slip and nanoscale deformation twins. This behavior is interpreted based on the different stacking fault energies of the alloys, with high or low stacking fault energy materials (at a given temperature) exhibiting significant localization of plasticity, while intermediate stacking fault energy alloys (at a given temperature) deform in a more homogeneous manner, which in turn strongly affects mechanical properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, High-Entropy Alloys |