About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Algorithm Development in Materials Science and Engineering
|
Presentation Title |
Computational Modeling of Dual Phase Titanium Armor
|
Author(s) |
Collin Roberts, Cameron McElfresh, Sicong He, Sergey Prikhodko, Jaime Marian |
On-Site Speaker (Planned) |
Collin Roberts |
Abstract Scope |
Titanium alloys are superior structural materials based on high specific strength, fracture toughness, and have potential as armor in defense applications. Our method to understand Ti-6Al-4V as armor material is to computationally model dislocation motion and microstructural evolution of a dual-phase lamellar alloy under a varied parametric space consisting of beta phase volume fraction, grain size, loading orientation, and strain rate, ultimately considering ballistic strain rate conditions such as dε/dt ≥ 100 s-1. The underlying model is capable of describing intra-grain plasticity while accounting for the geometrically necessary dislocations at grain boundaries. This model has been modified to account for strengthening and plasticity per phase, anisotropy effects from the hexagonal close-packed alpha phase, and grain texture from the lamellar packets. Future considerations include temperature effects on microstructure evolution, as well as machine-learning for prediction of mechanical properties such as Young's modulus, yield strength, and total elongation based on microstructural components. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Titanium, Modeling and Simulation |