Patent ID: 6223805
Filing Date: 2001-05-01
Classification: C22B,C22C,Y02P

Abstract:
A method for making a cast metal matrix composite, comprising:charging a crucible with at least one metal matrix composite body comprising at least one filler material embedded by a matrix metal;melting said matrix metal to form a composite melt comprising a sufficient number and size of impurity inclusions as to significantly degrade at least one set of properties selected from the group consisting of casting properties of said composite melt and mechanical properties of a metal matrix composite body cast from said melt;introducing into said composite melt a means for comminuting said impurity inclusions;comminuting said impurity inclusions sufficiently so as to noticeably restore at least one of said degraded properties;dispersing said comminuted impurity inclusions throughout said composite melt; andcasting said composite melt.