About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys III: Mechanical Behavior
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Presentation Title |
Modeling and Analysis of the Extreme Process Conditions during the Fabrication of High-entropy Alloys by Shear Assisted Processing and Extrusion (ShAPE) |
Author(s) |
Lei Li, Mohan Sai Kiran Kumar Yadav Nartu, Mageshwari Komarasamy, Ayoub Soulami, Isabella Johanna van Rooyen |
On-Site Speaker (Planned) |
Lei Li |
Abstract Scope |
High-entropy alloys (HEAs) offer a unique opportunity for designing alloys for nuclear applications due to their superior properties and unexplored compositional space. HEAs are mostly processed by casting which introduces undesirable compositional segregation and coarse dendritic structures. Shear assisted processing and extrusion (ShAPE) is a solid-phase process that can alleviate these defects while obtaining products with high density and low impurity content. However, the associated physics and extreme thermomechanical conditions are complex, which hinders a better understanding and optimization of this manufacturing process. This work introduces a smoothed particle hydrodynamics model for ShAPE of HEA (FeCoCrNi). The model is first validated by experiment and then used to analyze the relationship between the process parameters and thermomechanical conditions, tool-billet contact conditions, heat generation rates, and microstructure evolution. Based on the model, ShAPE parameters and tooling geometry are optimized to achieve desired process conditions for various types of HEAs. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, Process Technology |