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The Scientific World Journal
Volume 2014, Article ID 127032, 5 pages
http://dx.doi.org/10.1155/2014/127032
Research Article

Nanoscale Strain Fields Research of Boundaries between B2 Matrix and G.P. Zone in Ni-Ti Alloy Thin Films

College of Science, Inner Mongolia University of Technology, Hohhot 010051, China

Received 9 November 2013; Accepted 19 February 2014; Published 24 March 2014

Academic Editors: Y. Fu, X. Li, and G. Pedrini

Copyright © 2014 Shilei Zhao and Chunwang Zhao. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ti-47at.%Ni alloy films were prepared by magnetron sputtering followed by 460°C for 40 minutes heat-treatment. The strain fields between B2 phase matrix and G.P. zone were mapped by a combination of high-resolution transmission electron microscopy and geometric phase analysis method. It was found that there is a compressive strain region parallel to the longitudinal axis of G.P. zone with 2 nm in width, −2.2% in average strain at the boundaries between B2 phase and G.P. zone.