Production of metallic articles
US3997369A · kind A · utility
12Cited by
5References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 12, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | May 12, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alloys having a composition suitable for superplastic deformation usually require heat treatment after casting and mechanical working in order to produce in the alloy the necessary fineness of grain stucture to permit such deformation to occur. It has now been found that some such alloys including in particular ranges of aluminum alloys containing zirconium (or Nb, Ta or Ni) may be heated to a superplastic forming temperature and non-superplastically deformed at that temperature to induce dynamic recrystallisation and simultaneously produce a fine recrystallised grain structure and superplastic deformation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.