20130156627 | COMPOSITIONS COMPRISING NICKEL-TITANIUM, METHODS MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME - 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/cm | 06-20-2013 |