Powder-metallurgical production of a workpiece from a heat-resistant aluminum alloy
US4737339A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1987 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Aug 11, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/0416
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A workpiece consisting of a heat-resistant aluminum alloy is produced by a powder-metallurgical process wherein an alloy containing 8 to 14% by weight Fe, 0.5 to 2% by weight V and 0.2 to 1% by weight Mn is melted, the melt is cooled in a gas stream at a rate of at least 10.sup.5 .degree.C/s and is atomized to form particles having a diameter of 1 to 40 .mu.m, whereupon the powder is consolidated a temperature of 350.degree. to 450.degree. C. at a pressure of 2000 to 6000 bar, to form a pressed article. In this process, the intermetallic compound Al.sub.6 Fe stabilized by Mn occurs in fine distribution. This dispersoid imparts high ductility and toughness to the grain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.