Methods of processing nickel-titanium alloys
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United States of America Patent
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Dec 8, 2009
Grant Date -
Jul 19, 2007
app pub date -
Feb 19, 2007
filing date -
May 1, 2003
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Abstract
Embodiments of the present invention provide methods of processing nickel-titanium alloys including from greater than 50 up to 55 atomic percent nickel to provide a desired austenite transformation temperature and/or austenite transformation temperature range. In one embodiment, the method comprises selecting a desired austenite transformation temperature, and thermally processing the nickel-titanium alloy to adjust an amount of nickel in solid solution in a TiNi phase of the alloy such that a stable austenite transformation temperature is reached, wherein the stable austenite transformation temperature is essentially equal to the desired austenite transformation temperature.
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