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- Title
Elevated Temperature, In Situ Micromechanical Characterization of a High Temperature Ternary Shape Memory Alloy.
- Authors
Wheeler, J.; Niederberger, C.; Raghavan, R.; Thompson, G.; Weaver, M.; Michler, J.
- Abstract
The microthermomechanical behavior of a precipitation-hardenable Ni-48Ti-25Pd (at.%) shape memory alloy has been investigated as a function of temperature. Micropillars were fabricated within a large 〈145〉-oriented grain and compressed in situ in the SEM at elevated temperatures corresponding to the martensite and austenite phase transformation temperatures. The precipitation-strengthened alloys exhibited stable pseudoelastic behavior with little or no residual strains when near the transformation temperatures. In the plastic regime, slip was observed to occur via pencil glide, circumventing the fine scale precipitates along multiple slip planes.
- Subjects
TERNARY alloys; MATERIALS at high temperatures; ALLOY testing; MICROELECTROMECHANICAL systems; AUSTENITE
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2015, Vol 67, Issue 12, p2908
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-015-1627-x