Compositions comprising nickel-titanium, methods manufacture thereof and articles comprising the same

US9393619B2 · kind B2 · utility

Assignees

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US
• THE ABBOTT BALL COMPANY · US

Inventors

• Glenn N. Glennon · Town of West Hartford, US
• Christopher DellaCorte · Medina, US

Key dates

• Filing date: Nov 30, 2012
• Grant date: Jul 19, 2016
• Expiry date: Jul 23, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D9/38
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosing herein is a method for manufacturing nickel-titanium compositions. The method includes disposing a powdered composition in a mold; the powdered composition comprising nickel and titanium; the titanium being present in an amount of about 38 to about 42 wt % and the nickel being present in an amount of about 58 to about 62 wt %; sintering the powdered composition to produce a sintered preform; compacting the preform; machining the preform to form an article; heat treating the article; the annealing being conducted at a temperature of about 1650° F. to about 1900° F. at a pressure of about 3 Torr to about 5 Kg−f/cm2 for a time period of about 10 minutes to about 5 hours; and quenching the article.