Patent ID: 6342180
Filing Date: 2002-01-29
Classification: C22C

Abstract:
A magnesium-based casting alloy having improved elevated temperature properties, which consists of, in weight percent, 1 to 12% aluminum, 0.1 to 0.6% strontium, and 0.1 to 0.5% calcium, with the balance being magnesium except for impurities commonly found in magnesium alloys, wherein said magnesium-based casting alloy contains less than or equal to 0.05% of silicon impurity, and is free of rare earth elements, and wherein said alloy has a structure including a matrix of grains of magnesium having a mean particle size of from 5 to about 250 micrometers reinforced by intermetallic compounds having a mean particle size of from 2 to about 20 micrometers.