Process for the improved ductility of nitinol
First Claim
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1. A process for treating nitinol comprising the steps of:
- exposing said nitinol to a primary annealing temperature within the range of approximately 475°
C. to 525°
C. for a first time period of approximately 10 minutes;
quenching said nitinol; and
exposing said nitinol to a secondary annealing temperature within the range of approximately 550°
C. to 800°
C. for a second time period.
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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.
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Citations
31 Claims
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1. A process for treating nitinol comprising the steps of:
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exposing said nitinol to a primary annealing temperature within the range of approximately 475°
C. to 525°
C. for a first time period of approximately 10 minutes;quenching said nitinol; and exposing said nitinol to a secondary annealing temperature within the range of approximately 550°
C. to 800°
C. for a second time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A process for treating nitinol comprising the steps of:
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exposing said nitinol to a primary annealing temperature within the range of approximately 475°
C. to 525°
C. for a first time period of approximately 10 minutes; andexposing said nitinol to a secondary annealing temperature within the range of approximately 550°
C. to 800°
C. for a second time period. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification