Orientation-independent pseudoelasticity in small-scale NiTi compression pillars

This study investigates the small-scale deformation behavior of [1 1 1], [2 1 0] and [0 0 1] NiTi shape memory alloys. In stark contrast to bulk deformation behavior, the pseudoelastic behavior of sub-micron diameter compression pillars is highly dependent on diameter and relatively independent of o...

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Bibliographic Details
Published in:Scripta materialia 2008-07, Vol.59 (1), p.7-10
Main Authors: Frick, Carl P., Clark, Blythe G., Orso, Steffen, Sonnweber-Ribic, Petra, Arzt, Eduard
Format: Article
Language:English
Subjects:
Compressing
Intermetallics
Microcompression
Nickel base alloys
Nickel compounds
Nickel titanides
NiTi
Pillars
Pseudoelasticity
Shape memory
Shape memory alloys
Titanium compounds
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Summary:This study investigates the small-scale deformation behavior of [1 1 1], [2 1 0] and [0 0 1] NiTi shape memory alloys. In stark contrast to bulk deformation behavior, the pseudoelastic behavior of sub-micron diameter compression pillars is highly dependent on diameter and relatively independent of orientation. Transmission electron microscopy is used to investigate pillars post-compression, giving insight into the deformation mechanisms involved.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2008.01.051