Texture development in Ni-Ti thin films

F. M. Braz Fernandes, R. M. S. Martins, N. Schell, K. K. Mahesh, R. J. C. Silva

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Shape Memory Effect on Ni-Ti thin films is strongly dependent on several factors: (i) chemical composition of the matrix, (ii) presence of precipitates and (iii) preferential orientation. Ni-Ti alloys derive their unique nonlinear and anisotropic mechanical behavior from stress-induced martensitic transformations, where the resulting strains are affected by crystallographic orientation. The influence of the texture on the transformation characteristics of Ni-Ti thin films is discussed on the basis of models and experimental results of the literature. A brief review of the texture build-up on thin films obtained by different fabrication techniques (sputtering, melt spinning, diffusion treatment of ultra-fine laminates, ...) is presented. Details about in situ techniques allowing the identification of the preferential orientation during the fabrication process are presented. The processing parameters that more strongly influence the preferential orientation of the Ni-Ti thin films are identified. The mechanisms for the different microstructures are summarized and a special emphasis is put on the type of preferential orientation and its evolution along the processing time.

Original languageEnglish
Title of host publicationCIMTEC 2008 - Proceedings of the 3rd International Conference on Smart Materials, Structures and Systems - State-of-the-art Research and Application of SMAs Technologies
EditorsP. Vincenzini, S. Besseghini
PublisherTrans Tech Publications Ltd
Pages69-76
Number of pages8
Volume59
ISBN (Print)978-390815816-5
DOIs
Publication statusPublished - 1 Jan 2008
Event3rd International Conference on Smart Materials, Structures and Systems - State-of-the-art Research and Application of SMAs Technologies, CIMTEC 2008 - Acireale, Sicily, Italy
Duration: 8 Jun 200813 Jun 2008

Publication series

NameAdvances in Science and Technology
PublisherTrans Tech Publications Ltd
Volume59
ISSN (Print)1662-0356

Conference

Conference3rd International Conference on Smart Materials, Structures and Systems - State-of-the-art Research and Application of SMAs Technologies, CIMTEC 2008
CountryItaly
CityAcireale, Sicily
Period8/06/0813/06/08

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Keywords

  • Shape memory
  • Texture
  • Thin films

Cite this

Braz Fernandes, F. M., Martins, R. M. S., Schell, N., Mahesh, K. K., & Silva, R. J. C. (2008). Texture development in Ni-Ti thin films. In P. Vincenzini, & S. Besseghini (Eds.), CIMTEC 2008 - Proceedings of the 3rd International Conference on Smart Materials, Structures and Systems - State-of-the-art Research and Application of SMAs Technologies (Vol. 59, pp. 69-76). (Advances in Science and Technology; Vol. 59). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AST.59.69