Method of producing a memory alloy
US4365996A · kind A · utility
11Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Mar 2, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/0425
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cu/Al and Cu/Al/Ni memory alloys having improved mechanical properties are prepared by powder metallurgy from mixtures of pre-alloyed and/or pre-mixed powder ingredients. The mixture of powder ingredients is subjected successively to isostatic pressing, sintering in an inert atmospheric and subsequent multi-step hot working with intermediate annealing which serves to homogenize. Final annealing is carried out in the .beta.-phase solid solution temperature range and the annealed article is quenched in water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.