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Coatings 2017, 7(1), 5; doi:10.3390/coatings7010005

Shape Memory and Huge Superelasticity in Ni–Mn–Ga Glass-Coated Fibers

1
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, No. 30, Xueyuan Road, Beijing 100083, China
2
Institute of Materials Science of Madrid, CSIC, 28049 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Alessandro Lavacchi
Received: 3 September 2016 / Revised: 17 December 2016 / Accepted: 29 December 2016 / Published: 3 January 2017
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Abstract

Ni–Mn–Ga polycrystalline alloy fibers with diameters of 33 μm are reported to exhibit significantly improved ductility and huge superelastic and shape memory strains in comparison to conventional brittle bulk polycrystalline alloys. Particularly, the recoverable strain of the Ni54.9–Mn23.5–Ga21.6 fiber can be as high as 10% at 40 °C. Such optimized behavior has been achieved by a suitable fabrication process via a glass-coating melt spinning method. The superelastic properties at different temperatures and the shape memory effect of Ni54.9–Mn23.5–Ga21.6 fibers were investigated. View Full-Text
Keywords: glass-coated melt spinning; fibers; shape memory; superelasticity; serration behavior glass-coated melt spinning; fibers; shape memory; superelasticity; serration behavior
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Shao, L.; Zhao, Y.; Jiménez, A.; Vázquez, M.; Zhang, Y. Shape Memory and Huge Superelasticity in Ni–Mn–Ga Glass-Coated Fibers. Coatings 2017, 7, 5.

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