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Shape memory effect in thin films of a Cu–Al–Ni alloy by F.C. Lovey; A.M. Condó; J. Guimpel; M.J. Yacamán is a Engineering article available to read on EtoBox.

What is Shape memory effect in thin films of a Cu–Al–Ni alloy about?

Thin films of Cu-26.9 at.% Al-5.5 at.% Ni were grown by dc magnetron sputtering from the alloy target previously melted in an induction furnace. The films were grown either on glass or (1 0 0)Si substrates at room temperature. The films, of approximately 3 m thickness, were peeled off from the substrate for further studies. The structures and microstructures of the as grown films were analysed by transmission electron microscopy. A nanometric mixture of BCC and 2H phases was found irrespective of the substrate. The shape memory effect was not observed for this structural state. After an annealing at 1023 K for 3600 s in He or Ar flux, followed by quenching to room temperature, the films were found to be in a martensitic state. Mainly the 18R structure was observed. At this stage the films were mechanically deformed at room temperature and then heated up to 373 K. A good shape recovery was observed to take place in a temperature range between 334 and 360 K.

Who reads Shape memory effect in thin films of a Cu–Al–Ni alloy?

Author

F.C. Lovey; A.M. Condó; J. Guimpel; M.J. Yacamán

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-5093)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)