A new method of analyzing solidification miorostructures of MMCp (Metal Matrix Composite Reinforced by Particles) is proposed based on the principle of statistics in this paper. It is shown that the degree of dispersion of particles increases as crystal grain size and dendrite arm spacing (DAS) of the material decrease. The mean square deviance of the spacing between particles can be taken as the parameters for evaluating homogeneous degree of distributions of particles in MMCp.
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