Abstract Scope |
Magnetic field thermal processing has shown to alter materials microstructure and consequently properties. In particular, thermomagnetic treatment is a technique to tailor materials microstructure in order to develop permanent magnets. In this work, we developed a simulation framework for ternary alloys microstructural evolution during magnetic heat treatment. We coupled the phase field model with micromagnetic theories to capture the temporal and spatial evolution of the microstructure. We parameterized the model for Fe-Cr-Co with parameters from CALPHAD databases in order to make the simulation close to the realistic alloy. We used the Idaho National Laboratory finite element package MOOSE, Multi-physics Object Oriented Simulation Environment, to simulate the manufacturing process, including thermomagnetic treatment along with spinodal decomposition. The results show a validated model that represents a reasonably accurate quantitative depiction of the Fe-Cr-Co alloy magnet, including visualization of components and the minimization of the microstructure’s free energy density throughout simulated time. |