Abbreviated Journal Title
Appl. Phys. Lett.
Keywords
SUPERELASTIC NITI; TIC COMPOSITES; ALLOYS; Physics, Applied
Abstract
The elastic modulus of B19' shape-memory NiTi was determined using three techniques; from the response of lattice planes measured using in situ neutron diffraction during loading, instrumented indentation using a spherical indenter and macroscopic extensometry. The macroscopic measurements resulted in a modulus of 68 GPa, significantly less than the 101 GPa from indentation and the lattice plane average of 109 GPa from neutron diffraction. Evidence from the neutron measurements suggests that the disparity derives from the onset of small amounts of twinning at stresses less that 40 MPa, which might otherwise be considered elastic from a macroscopic view point.
Journal Title
Applied Physics Letters
Volume
86
Issue/Number
8
Publication Date
1-1-2005
Document Type
Article
DOI Link
Language
English
First Page
3
WOS Identifier
ISSN
0003-6951
Recommended Citation
Rajagopalan, S.; Little, A. L.; Bourke, M. A. M.; and Vaidyanathan, R., "Elastic modulus of shape-memory NiTi from in situ neutron diffraction during macroscopic loading, instrumented indentation, and extensometryl" (2005). Faculty Bibliography 2000s. 5569.
https://stars.library.ucf.edu/facultybib2000/5569
Comments
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