Shape memory alloy and method for producing same

Details Shape memory alloy and method for producing same Shape memory alloy and method for producing same

2008-05-13

2008-05-13

Wyszomierski, George P. (Department: 1793)

Metal treatment

Stock

Mechanical memory

C148S442000, C420S580000

Reexamination Certificate

active

07371295

ABSTRACT:
A shape memory alloy comprises Co, Ni and Al with a two-phase structure comprising a β-phase having a B2 structure and a γ-phase having an fcc structure, at least 40% by area of crystal grain boundaries of the β-phase being occupied by the γ-phase. The shape memory alloy can be produced by a first heat treatment step comprising heating at 1200 to 1350° C. for 0.1 to 50 hours and cooling at 0.1 to 1000° C./minute, and a second heat treatment step comprising heating at 1000 to 1320° C. for 0.1 to 50 hours and cooling at 10 to 10000° C./minute.

REFERENCES:
patent: 4205293 (1980-05-01), Melton et al.
patent: 61-106746 (1986-05-01), None
patent: 3-257141 (1991-11-01), None
patent: 05-311287 (1993-11-01), None
patent: 11-509368 (1999-08-01), None
patent: 11-269611 (1999-10-01), None
patent: 2001-329347 (2001-11-01), None
patent: 2002-129273 (2002-05-01), None
patent: 2002-317235 (2002-10-01), None
patent: WO-97/03472 (1997-01-01), None
Oikawa K. et al: “Promising Ferromagnetic Ni-Co-Al Shape Memory Alloy System” Applied Physics Letters, American Institute of Physicals. New York, US, vol. 79. No. 20, Nov. 12, 2001, pp. 3290-3292, XP001102895 ISSN: 0003-6951.

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