CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetic and mechanical properties of Ni–Mn–Ga/Fe–Ga ferromagnetic shape memory composite |
Tan Chang-Long (谭昌龙)a, Zhang Kun (张琨)a, Tian Xiao-Hua (田晓华)a, Cai Wei (蔡伟)b |
a College of Applied Science, Harbin University of Science and Technology, Harbin 150080, China; b School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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Abstract A ferromagnetic shape memory composite of Ni–Mn–Ga and Fe–Ga was fabricated by using spark plasma sintering method. The magnetic and mechanical properties of the composite were investigated. Compared to the Ni–Mn–Ga alloy, the threshold field for magnetic-field-induced strain in the composite is clearly reduced owing to the assistance of internal stress generated from Fe–Ga. Meanwhile, the ductility has been significantly improved in the composite. A fracture strain of 26% and a compressive strength of 1600 MPa were achieved.
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Received: 14 October 2014
Revised: 25 December 2014
Accepted manuscript online:
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PACS:
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75.50.Cc
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(Other ferromagnetic metals and alloys)
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81.30.Kf
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(Martensitic transformations)
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64.70.kd
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(Metals and alloys)
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Fund: Projects supported by the National Natural Science Foundation of China (Grant Nos. 51271065 and 51301054), the Program for New Century Excellent Talents in Heilongjiang Provincial Education Department, China (Grant No. 1253-NCET-009), the Youth Academic Backbone in Heilongjiang Provincial Education Department, China (Grant No. 1251G022), the Projects of Heilongjiang, China, and China Postdoctoral Science Foundation. |
Corresponding Authors:
Tan Chang-Long
E-mail: changlongtan@hrbust.edu.cn
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About author: 75.50.Cc; 81.30.Kf; 64.70.Kd |
Cite this article:
Tan Chang-Long (谭昌龙), Zhang Kun (张琨), Tian Xiao-Hua (田晓华), Cai Wei (蔡伟) Magnetic and mechanical properties of Ni–Mn–Ga/Fe–Ga ferromagnetic shape memory composite 2015 Chin. Phys. B 24 057502
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