High-strength and high-toughness magnesium based alloy, driving system part using the same and manufacturing method of high-strength and high-toughness magnesium based alloy material
US7922967B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | May 18, 2010 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | May 18, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high-strength and high-toughness magnesium based alloy contains, by weight, 1 to 8% rare earth element and 1 to 6% calcium and the maximum crystal grain diameter of magnesium constituting a matrix is not more than 30 μm. At least one intermetallic compound (6) of rare earth element and calcium has a maximum grain diameter of 20 μm or less and it is dispersed in a crystal grain boundary (5) and a crystal grain (4) of magnesium of the matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.