TiNi Base alloy shape memory enhancement through thermal and mechanical processing
US4304613A · kind A · utility
36Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | May 12, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for improving the shape change memory properties of a titanium-kel base alloy by (1) heat treating the alloy to convert the TiNi phase to CsCl (B2)-type crystal structure, (2) cold working the alloy to increase the micro-twining, and finally (3) thermal cycling the alloy through the transition temperature range (TTR) while a load is applied in order to improve the orientation of the micro-twins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.