Coherent nanodispersion-strengthened shape-memory alloys
US7316753B2 · kind B2 · utility
8Cited by
3References
16Claims
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Key dates
| Filing date | Mar 25, 2004 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Jan 3, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
High-strength, low-hysteresis TiNi-based shape-memory alloys (SMAS) employing fully coherent low-misfit nanoscale precipitates, wherein the precipitate phase is based on an optimized composition for high parent-phase strength and martensite phase stability, and compensating the stored elastic energy through the addition of martensite stabilizers. The alloys, with a yield strength in excess of 1200 MPa, are useful for applications such as self-expanding stents, automotive actuators, and other applications wherein SMAs with high output force and long cyclic life are desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.