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Electron energy-loss spectroscopy study of NiTi shape memory alloys

✍ Scribed by Z.Q. Yang; D. Schryvers

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
291 KB
Volume
481-482
Category
Article
ISSN
0921-5093

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✦ Synopsis

Electron energy loss spectroscopy (EELS) investigations were carried out on NiTi shape memory alloys. The composition of lens-shaped precipitates is determined to be Ni 4 Ti 3 by model-based EELS quantification, and the Ni-depleted zone in the B2 matrix surrounding the Ni 4 Ti 3 precipitates was quantified. The Young's modulus Y m of the B2 matrix with 51 at.% Ni and the Ni 4 Ti 3 precipitates was evaluated to be about 124 and 175 GPa, respectively. The intensity of the Ni L 3 edge for the precipitate is slightly higher than that for the B2 phase.

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