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The length scale in quantitative phase field modeling with material-specific parameters as inputs is determined by the actual interface thickness. Using three examples, we demonstrate that for individual processes such as growth or coarsening, one can always diffuse the interface and hence increase the simulation length scale by adjusting certain parameters in the model without altering the kinetics.
We present an approach for increasing the length scale of quantitative phase field modeling of concurrent growth and coarsening processes with neither growth nor coarsening kinetics altered. We modify locally the free energy hump between the two equilibrium phases, which determines interface thickness, while keeping the driving forces for growth and coarsening unchanged. The approach is applied to...
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