Copper base alloy for forging from a semi-solid slurry condition
US4594117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | May 31, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21J5/004
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process and apparatus for forming a thin-walled, elongated member having superior strength properties from an age hardenable copper base alloy consisting essentially of about 3% to about 20% nickel, about 5% to about 10% aluminum, and the balance essentially copper, is described herein. A slug or billet of a slurry cast, age hardenable copper base alloy is formed into a semi-solid slurry having about 5% to about 40% of the alloy in a liquid phase. The semi-solid slurry is then thixoforged to form the thin-walled, elongated member. Thereafter, the member is age hardened to provide a product having desired strength properties. The process and apparatus of the instant invention may be utilized to form cartridge casings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.