About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Bridging Scale Gaps in Multiscale Materials Modeling in the Age of Artificial Intelligence
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Presentation Title |
Engineering the crack-tip material composition to enhance the microplasticity in Refractory Complex Concentrated Alloys |
Author(s) |
Subhendu Chakraborty, Liang Qi |
On-Site Speaker (Planned) |
Subhendu Chakraborty |
Abstract Scope |
Refractory Complex Concentrated Alloys(RCCAs) are promising candidates for high-temperature structural applications with temperatures exceeding 1000° C. But these materials suffer from low fracture toughness at room temperature causing the material to be brittle and difficult to machine.
In this presentation, we will discuss our findings in designing the alloy composition to enhance the microplasticity near the crack tip by activating multiple slip systems at the crack tip. Time-accelerated molecular dynamics with machine-learned potential will be used to study the plastic deformation mechanisms near the crack tip. The model will be coupled with mesoscale crystal-plasticity to overcome the spatial limitation of the atomistic domain and represent the crack-tip stress field appropriately. The effect of different alloying compositions on either nucleation of dislocation or propagation of crack will be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Modeling and Simulation, Computational Materials Science & Engineering |