Surface Roughness-Controlled Superelastic Hysteresis in Shape Memory Microwires
Name
Surface_Roughness_UELAND-SCHUH.pdf
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287.66 KB
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Adobe PDF
Checksum (MD5)
a4b8065a33ebfa646dbaab27c09e6b0c
Author(s)
Ueland, Stian Melhus
Schuh, Christopher A
Date Issued
February 2014
Journal
Scripta Materialia
Publisher
Elsevier
Citation
Ueland, Stian M. and Christopher A. Schuh. "Surface Roughness-Controlled Superelastic Hysteresis in Shape Memory Microwires." Scripta Materialia 82 (2014): 1-4.
Version
Author's final manuscript
Abstract
Superelasticity in Cu–Zn–Al shape memory alloy microwires is studied as a function of surface roughness. Wires with a rough surface finish dissipate more than twice as much energy per unit volume during a superelastic cycle than do electropolished wires with smooth surfaces. We attribute the increased damping in wires with large surface roughness to the increased density of surface obstacles where frictional energy is dissipated as heat during martensitic phase transformation.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.scriptamat.2014.02.017
