About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Advances in Multi-Principal Element Alloys III: Mechanical Behavior
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Presentation Title |
Plasticity-induced Local Heating in High Entropy Alloys (HEAs) |
Author(s) |
Chunyu Li, Alejandro Strachan |
On-Site Speaker (Planned) |
Alejandro Strachan |
Abstract Scope |
Complex dislocation movements in HEAs could potentially lead to very different localized heating. Although plasticity-induced heating in metals has been studied extensively in the past, it has not been investigated for HEAs. Understanding this plasticity-induced heating in HEAs is very important for improving HEA mechanical properties and optimizing their manufacturing process.
With atomistic simulations, we are able to better understand the complex mechanisms of plasticity-induced heating currently non-accessible by experimentalists. The focus is on a FCC system, FeNiCoCrCu, with a composition of equal fractions. We conducted large scale molecular dynamics simulations on the uniaxial tension of an HEA cylindrical nanowire using both individual EAM potential and averaged EAM potential. Local temperature distribution and evolution during the deformation process up to the breaking failure are revealed. Plasticity induced local temperatures in the HEA nanowire are correlated with dislocation distribution and shear strain distribution. Simulations results are also compared with pure Copper.
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Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Modeling and Simulation, Mechanical Properties |