J. Phys. IV France
Volume 112, October 2003
Page(s) 689 - 692

J. Phys. IV France
112 (2003) 689
DOI: 10.1051/jp4:2003976

Studies of the R-phase transformation in a Ti-51at.%Ni alloy by transmission electron microscopy

D. Stróz

University of Silesia, Bankowa 12, 40-007 Katowice, Poland

The R-phase transformation in a Ti-51at.%Ni shape memory alloy was studied by transmission electron microscopy (TEM) including high resolution microscopy and in situ observations at cooling. The incommensurability of the superlattice reflections was examined by recording the diffraction patterns with the use of a CCD slowscan camera and analysing the reflection positions by DigitalMicrograph program. It is shown that the incommensurability exists in this alloy within a wide temperature range and its is neither regular nor periodic. It decreases with decreasing temperature reaching finally the commensurate R-phase state.

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