| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-toughness magnesium-base alloy having excellent tensile strength, fracture elongation and fatigue strength at ordinary temperature and also having high heat-resistant strength characteristics at about 200°C. SOLUTION: The high-toughness magnesium-base alloy contains, by weight, 1 to 8% rare earth element and 1 to 6% calcium, and further, the maximum grain size of magnesium constituting a matrix is made to≤30μm. The maximum grain size of an intermetallic compound 6 of at least either of the rare earth element and calcium is made to≤20μm, and this intermetallic compound is dispersed in the grain boundaries 5 and grains 4 of the magnesium constituting the matrix. COPYRIGHT: (C)2006,JPO&NCIPI
|
