Method for producing composite material having an aluminum alloy matrix with a silicon carbide reinforcement
US4753690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1986 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Aug 13, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12486
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Reinforced composite aluminum-matrix articles containing up to 20%, by volume, silicon carbide fibers or particles, are produced by a casting process wherein about 4% to about 7%, by weight, of magnesium is included in the aluminum matrix alloy to facilitate wetting of the reinforcing material and ready dispersal thereof with the matrix alloy while the alloy is completely molten and thereafter hot working the composite at a temperature between the liquidus and solidus temperatures of the aluminum alloy matrix. The matrix is characterized by a microstructure wherein fine precipitates appear in the vicinity of SiC particles or fibers, and by high hardness and strength without further heat treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.