Method for producing a heat-resistant aluminum-alloy workpiece having high transverse ductility which is manufactured from a compact produced by powder metallurgy
US4921664A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Feb 8, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F3/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method for producing a heat-resistant aluminum-alloy workpiece having high transverse ductility which is manufactured from a compact produced by powder metallurgy, in which alloy powders are first cold-isostatically pressed under a pressure of 1500 to 5000 bar and the extrusion billet (2) produced in this manner is hot-recompacted and extruded to form a bar (7) with rectangular cross-section. Reduction ratio at least 6:1. A prismatic bar section (8) is separated from the bar (7) and is converted without further hot deformation and solely by machining into the final product in a manner such that the mechanical main load directions of the final product position themselves in a plane which is parallel to the plane which is extended through the extrusion direction and the longitudinal axis of the cross-section of the bar (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.