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

Coatings

Manuel Vázquez¹  Alejandro Jiménez¹  Lei Shao²  Yangyong Zhao²  Yong Zhang² 

[1] Institute of Materials Science of Madrid, CSIC, 28049 Madrid, Spain;State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, No. 30, Xueyuan Road, Beijing 100083, China;

关键词: glass-coated melt spinning;    fibers;    shape memory;    superelasticity;    serration behavior;   

DOI  :  10.3390/coatings7010005

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown