Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 227, Issue 3, Pages 337-342Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2004.09.001
Keywords
TiNi thin films; electron irradiation; martensitic transformation; DSC
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In this work, Ti-Ni shape memory alloy thin films were irradiated by I.7MeV electron with three types of fluences: 4 x 10(20) 7x 10(20) and 1 X 10(21)/m(2). The influence of electron irradiation on the transformation behavior of the TiNi thin films were investigated by differential scanning calorimetry. The transformation temperatures A(s) and A(f) shifted to higher temperature after electron irradiation, the martensite was stabilized. The electron irradiation effect can be easily eliminated by one thermal cycle. The shifts of the transformation temperatures can be explained from the change of potential energy barrier and coherency energy between parent phase and martensite after irradiation. (C) 2004 Elsevier B.V. All rights reserved.
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