Aluminum alloy for the preparation of powders having increased high-temperature strength
US4765851A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1986 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Jun 18, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/0416
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy for the production of powders having increased high-temperature strength by rapid quenching, the said alloy containing 1.5 to 5% by weight of Li, 4 to 11% by weight of Fe and 1 to 6% by weight of at least one of the elements Mo, V or Zr, the remainder being Al, or 1.5 to 5% by weight of Li, 4 to 7% by weight of Cr and 1 to 4% by weight of at least one of the elements V or Mn, the remainder being Al. A low density and good high-temperature strength as well as good thermal stability up to 400.degree. C. coupled with Vickers hardnesses of up to 180 (HV) are achieved. Hardness-imparting dispersoids in the form of the phases Al.sub.3 Li and Al.sub.3 Zr, as well as other intermetallic compounds of Al with Mo, V or Mn, having a particle diameter of no more than 0.1 .mu.m, constitute a large volume fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.