Accession Number : AD0164800

Title :   Thermally Activated Spring with Improved Thermal Properties.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Rothwarf,Frederick ; Flynn,Paul D.

Report Date : 24 JUL 1973

Pagination or Media Count : 5

Abstract : A thermally activated spring of martensite transformation material which has improved thermal diffusivity and methods of making same. Martensite transformation materials, such as NiTi and AuCd, are able to 'remember' a given high temperature phase shape and may be used as thermally activated springs. Thermal diffusivity may be enhanced by layering them with a material having a much higher thermal diffusivity, such as copper or silver. Another method of achieving improved thermal diffusivity is to use a core of copper or silver layered with the martensite transformation material. It is a further object of this invention to provide a novel spring for use as a component in small caliber fuzes.

Descriptors :   *Springs, *Intermetallic compounds, *Thermal properties, *Patents, Fuzes(Ordnance), Nickel alloys, Titanium alloys, Gold alloys, Cadmium alloys, Coatings, Copper, Silver

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE