Process for the improved ductility of nitinol
US6540849B2 · kind B2 · utility
21Cited by
29References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for treating nitinol so that desired mechanical properties are achieved. In one embodiment, the process comprises the steps of exposing the nitinol to a primary annealing temperature within the range of approximately 475° C. to 525° C. for a first time period, and thereafter exposing the nitinol to a secondary annealing temperature within the range of approximately 550° C. to 800° C. for a second time period. The invention also includes nitinol articles made by the process of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.