Light metal alloys, product and method of fabrication
US4571272A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1983 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Aug 26, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S420/902
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of superplastically forming an article from a light metal base alloy, of the kind capable of having its crystal structure modified by cold working in such a way that subsequent dynamic recrystallization by hot working is facilitated, comprises cold working a first blank of the alloy to form a second blank having the modified crystal structure, and then forming the second blank into the article by hot working so that dynamic recrystallization is induced and super plastic deformation occurs. The degree of modification of the crystal structure during cold working is such that as the dynamic recrystallization continues, the grain size is progressively refined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.