Accession Number : ADD009761

Title :   TiNi Base Alloy Shape Memory Enhancement through Thermal and Mechanical Processing.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Wang,Frederick E ; Buehler,William J

Report Date : 08 Dec 1981

Pagination or Media Count : 6

Abstract : A process for improving the shape change memory properties of a titanium-nickel base alloy by: (1) heat treating the alloy to convert the TiNi phase to CsCl (B2) type crystal structure, (2) cold working the alloy to increase the micro-twining, and finally (3) thermal cycling the alloy through the transition temperature range (TTR) while a load is applied in order to improve the orientation of the micro-twins.

Descriptors :   *Patents, *Titanium alloys, *Nickel alloys, *Shape, Thermal properties, Processing, Cold working, Thermal cycling tests, Mechanical properties, Crystal structure, Heat, Transition temperature

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE