Process to produce and stabilize a reversible two-way shape memory effect in a Cu-Al-Ni or a Cu-Al alloy
US4416706A · kind A · utility
6Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Jul 29, 1982 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Jul 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process to produce a reversible two-way shape memory effect in Cu-Al-Ni and Cu-Al memory alloys by heat treating said alloy while applying an external lead (G) after the martensite formation accomplished by the conventional steps: solution treatment, quench (1,2) and deformation (3). Additional improvements by optional Martensite Stabilization (10) and Two-way Effect Zero-point Stabilization (12) in the form of further heat treatments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.