Ronald D. Noebe - Medina OH, US Susan L. Draper - Westlake OH, US Michael V. Nathal - Strongsville OH, US Anita Garg - Westlake OH, US
Assignee:
The United States of America as represented by the Administration of NASA - Washington DC
International Classification:
C22C 30/00
US Classification:
148402, 148442
Abstract:
According to the invention, compositions of Ni—Ti—Pt high temperature, high force, shape memory alloys are disclosed that have transition temperatures above 100 C. ; have narrow hysteresis; and produce a high specific work output.
Precipitation Hardenable High Temperature Shape Memory Alloy
Ronald Dean Noebe - Medina OH, US Susan L. Draper - Westlake OH, US Michael V. Nathal - Strongsville OH, US Edwin A. Crombie - West Chester PA, US
Assignee:
The United States of America as represented by the Administrator of National Aeronautics and Space Administration - Washington DC
International Classification:
C22C 30/00
US Classification:
148402, 148442, 420580
Abstract:
A composition of the invention is a high temperature shape memory alloy having high work output, and is made from (Ni+Pt+Y)Ti, wherein x is present in a total amount of 49-55 atomic %, Pt is present in a total amount of 10-30 atomic %, Y is one or more of Au, Pd, and Cu and is present in a total amount of 0 to 10 atomic %. The alloy has a matrix phase wherein the total concentration of Ni, Pt, and the one or more of Pd, Au, and Cu is greater than 50 atomic %.
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