Microstructure, magnetic and magnetocaloric properties in Ni42.9Co6.9Mn38.3Sn11.9 alloy ribbons

被引：1
|
作者：
Ma, S. C. [1 ]
Ge, Q. [1 ]
Yang, S. [1 ]
Liu, K. [1 ]
Han, X. Q. [1 ]
Yu, K. [1 ]
Song, Y. [1 ]
Zhang, Z. S. [1 ]
Jiang, Q. Z. [1 ]
Chen, C. C. [1 ]
Liu, R. H. [1 ]
Zhong, Z. C. [1 ]
机构：
[1] Jiangxi Univ Sci & Technol, Jiangxi Key Lab Rare Earth Magnet Mat & Devices, IREMMD, Ganzhou 341000, Peoples R China
来源：
AIP ADVANCES | 2018年 / 8卷 / 05期
基金：
中国国家自然科学基金;
关键词：
FIELD-INDUCED STRAINS; SHAPE-MEMORY ALLOYS; SINGLE-CRYSTALS; ENTROPY CHANGE; GIANT; TRANSFORMATION; TRANSITION;
D O I：
10.1063/1.5006245
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructure, magnetic and magnetocaloric properties are investigated in the melt-spun and annealed Ni42.9Co6.9Mn38.3Sn11.9 ribbons. The columnar grains grow perpendicular to ribbon surfaces. After annealing, the grain size increases greatly. Meanwhile, the parent phase is suppressed and therefore L1(0) martensite predominates, indicating obvious shift of martensitic transformation to high temperature. More interestingly, the martensite variants are distinctly observed on the fractured cross-section of annealed ribbons, not just on the free surface in general. The significant enhancement of magnetic entropy change and effective refrigerant capacities with relatively smaller thermal hysteresis make annealed ribbons potential candidate in magnetic refrigeration around room temperature. (C) 2017 Author(s).
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页数：7
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