| abstract |
A fiber reinforced metal type composite material is composed essentially of a mass of reinforcing fibers intimately compounded with a matrix metal. The reinforcing fibers are either alumina fibers, carbon fibers, or a mixture thereof. The matrix metal is an alloy consisting essentially of between about 0.5% and about 4.5% magnesium, less than about 0.2% each of copper and titanium, less than about 0.5% each of silicon, zinc, iron, and manganese, and the remainder aluminum. Preferably the amount of magnesium is between about 0.7% and about 4.5%, and even more preferably it is between about 1.0% and about 4.0%. |