The temperature degradation of the two way shape memory effect induced by stabilization
- Comision Nacional de Energia Atomica, Bariloche (Argentina)
The two way shape memory effect (TWME) refers to the transformation from the beta phase to the martensitic phase with an associated shape change without the application of external forces. This shape change implies the preferred nucleation or growth of some few martensitic variants. For this to happen it is necessary to do some prior kind of training. It was shown that allowing the martensite to stabilize under compressive stresses, the TWME is induced and there is no need of thermomechanical cycling. In this work the relevance of the velocity of heating in the degradation of the TWME subjected to high temperatures is reported and discussed. The sample used was a single crystal of Cu-Zn-Al with a Ms of 32 C and composition 68.9 at%Cu, 14.1at%Zn, 16.9at%Al. The sample was of compression type, cylindrical of 9.46 mm length and 4.70 mm in diameter.
- OSTI ID:
- 116063
- Journal Information:
- Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 9 Vol. 33; ISSN 0956-716X; ISSN SCRMEX
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of training temperature on the two way memory effect in a Cu-Zn-al alloy
The two way shape memory effect in Cu-Zn-Al single crystals: Role of dislocations and stabilization