High mechanical strength magnesium alloys and process for obtaining these alloys by rapid solidification
US4997622A · kind A · utility
72Cited by
6References
13Claims
0Family size
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Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Magnesium alloy having a breaking load of at least 290 MPa, more particularly at least 330 MPa, having the following composition by weight: Al 2-11%, Zn 0-12%, Mn 0-0.6%, Ca 0-7%, but with the presence of at least Zn and/or Ca, having a mean particle size less than 3 .mu.m, a homogeneous matrix reinforced with intermetallic compounds having a size less than 1 .mu.m precipitated at the grain boundaries, this structure remaining unchanged after storage at 200.degree. C. for 24 hours; and a process for producing it by rapid solidification and consolidation by extrusion at a temperature between 200.degree. and 350.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.