Production of beryllium-copper alloys and alloys produced thereby
US4792365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1987 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Nov 13, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C9/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing beryllium-copper alloys is disclosed, which comprises the steps of obtaining a cast ingot by melting an alloy essentially consisting of from 0.05 to 2.0% by weight of Be, form 0.1 to 10.0% by weight of at least one kind of Co and Ni, and the balance being substantially Cu, subjecting the thus obtained cast ingot to a solution treatment at a temperature range from 800.degree. to 1,000.degree. C., cold working, annealing at a temperature range from 750.degree. to 950.degree. C. being lower than the solution treating temperature, and then an age hardening treatment. The alloy may further contain from 0.05 to 4.0% by weight of at least one kind of Si, Al, Mg, Zr, Sn, and Cr in a total amount. By this producing process, the beryllium-copper alloys having higher strength and formability can be otained due to uniform and fine dispersion of solid-unsolved precipitate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.