SELECTION OF PARTICULATE REINFORCEMENT IN P M METAL-MATRIX COMPOSITES/

By mainly considering size difference effect of matrix powder and rein forcement particle, a critical value of reinforcement size is proposed to predict whether a uniform distribution of reinforcement is possibl e or not in powder metallurgy of particulate reinforced metal matrix c omposites. A uniform distribution of reinforcement could be expected o nly when the reinforcement size d(r) is not less than a critical value d(c) which is a function of reinforcement size d(r) and volume fracti on V-f and reduction ratio of secondary process R. By this model some metal matrix composites including other researcher's work are examined .