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MDPI, Coatings, 1(7), p. 5, 2017

DOI: 10.3390/coatings7010005

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

Journal article published in 2017 by Lei Shao, Yangyong Zhao, Alejandro Jiménez, Manuel Vázquez, Yong Zhang ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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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.