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Three typical microstructures (red dots represent amorphous phase and black lines represent grain boundary) of the system with [(a) and (b)] , [(c) and (d)] , [(e) and (f)] after 500 and 1500 MC steps, respectively.
(a) Dependence of , , , and ratio on amorphous volume fraction after 1500 MC steps. The horizontal dashed line represents the critical value of for . Three regimes are divided by vertical dashed lines.
The grain growth rate and the change rate of grain size standard deviation as a function of in the grain growth duration from 500 to 1500 MC steps. The dashed line is the fitting line with an exponential decay of . Three regimes are marked as vertical dashed lines corresponding to those in Fig. 2.
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