Patent ID: 8329094

Claim:
A magnesium alloy, comprising Y: 1.8 to 8.0 mass %, and Sm: 1.4 to 8.0 mass %, and the balance being Mg and inevitable impurities, wherein Y and Sm solute contents in a magnesium matrix of the magnesium alloy are Y: 0.8 to 4.0 mass % and Sm: 0.6 to 3.2 mass %, mean crystal grain size of a magnesium alloy structure is from 3 to 30 μm, and in the crystal grains, precipitates with a diameter of 2 nm or more observed under a TEM of a magnification of 300000 times are present in an average density of 160 precipitates/μm 2 or more.