7/3/2023 0 Comments Mediamonkey 5 second faseThe incorporation of the thermal gradient driving force enables the detailed behaviour of the grain boundaries around the particles to be predicted. The multi-phase field framework is fully coupled to the heat equation. In this work a multi-phase field model, incorporating thermal gradient and curvature driving forces, is used to predict grain growth in a Ti6Al4V alloy system with second phase particle inclusions representative of oxide and carbide precipitates. The presence of second phase particles, which act as pinning sites for boundaries, drastically alters the coarsening behaviour of the system particularly when considering that these particles have different thermal properties to the primary phase. The competitive growth of crystal grains, driven by thermodynamic forces at the grain boundaries, is one of the most fundamental phenomena in metallurgy and solid state physics. Understanding the interaction between complex thermal fields and metallic structures at the meso-scale is crucial for the prediction of microstructural evolution during thermomechanical processing.
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