TiNi Base alloy shape memory enhancement through thermal and mec

Details TiNi Base alloy shape memory enhancement through thermal and mec TiNi Base alloy shape memory enhancement through thermal and mec

1980-05-12

1981-12-08

Dean, R.

Metal treatment

Compositions

Heat treating

148 115F, 148 32, C22F 110

Patent

active

043046134

ABSTRACT:
A process for improving the shape change memory properties of a titanium-kel 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.

REFERENCES:
patent: 3174851 (1965-03-01), Buehler et al.
patent: 3403238 (1968-09-01), Buehler et al.
patent: 3529958 (1970-09-01), Buehler
patent: 3558369 (1971-01-01), Wang et al.
patent: 3594239 (1971-07-01), Wang
patent: 3652969 (1972-03-01), Willson et al.
patent: 3748197 (1973-07-01), Willson et al.

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