Effect of Magnesium Additions on Composites with Al and Al – 12% Si Matrices Strengthened with B4C and Prepared by Infiltration Under Pressure

Аннотация

Metallographic and x-ray phase analyses are used for metal-matrix composites Al – B₄C and (Al – 12% Si) – B₄C with a volume fraction of 60% boron carbide prepared by infiltrating a pressed workpiece with metal under pressure. It is shown that with introduction of 1 to 4% Mg into a metal matrix composite porosity is reduced from 7 to 1%.