Burst-like superelasticity and elastocaloric effect in [011] oriented Ni50Fe19Ga27Co4 single crystals. (May 2018)

• Record Type: Journal Article
• Authors: Zhao, Dewei; Xiao, Fei; Nie, Zhihua; Cong, Daoyong; Sun, Wen; Liu, Jian
• Is Part Of: Scripta materialia. Number 149(2018)
• Page Start: 6
• Page End: 10
• Publication Date: 2018-05
• Subjects: Burst martensitic transformation -- Superelasticity -- Elastocaloric effect; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.01.029
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: We have investigated the superelastic behavior and elastocaloric effect in [011] oriented Ni50 Fe19 Ga27 Co4 single crystals. The superelasticity is absent in a temperature gap of 60 K. At the critical temperature of 388 K, the stress oscillation and audible noise can be found during the superelastic deformation, indicating the occurrence of burst-like transformation. Such a burst character leads to a novel non-linear increase of martensitic transformation start stress with temperature, and an enhanced hysteresis loss. In addition, a large elastocaloric temperature window of 40 K and a maximum cooling effect of −6.1 K have been obtained. Graphical abstract: Unlabelled Image