Coherent nanodispersion-strengthened shape-memory alloys

Details Coherent nanodispersion-strengthened shape-memory alloys Coherent nanodispersion-strengthened shape-memory alloys

2008-01-08

2008-01-08

Wyszomierski, George (Department: 1742)

Metal treatment

Stock

Mechanical memory

C148S429000

Reexamination Certificate

active

07316753

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.

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