中国物理B ›› 2015, Vol. 24 ›› Issue (5): 57502-057502.doi: 10.1088/1674-1056/24/5/057502

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Magnetic and mechanical properties of Ni–Mn–Ga/Fe–Ga ferromagnetic shape memory composite

谭昌龙a, 张琨a, 田晓华a, 蔡伟b   

  1. 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
  • 收稿日期:2014-10-14 修回日期:2014-12-25 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:
    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.

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   

  1. 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
  • Received:2014-10-14 Revised:2014-12-25 Online:2015-05-05 Published:2015-05-05
  • Contact: Tan Chang-Long E-mail:changlongtan@hrbust.edu.cn
  • About author:75.50.Cc; 81.30.Kf; 64.70.Kd
  • Supported by:
    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.

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摘要： 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.

关键词: ferromagnetic shape memory alloys, magnetic properties, mechanical properties, martensitic transformations

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.

Key words: ferromagnetic shape memory alloys, magnetic properties, mechanical properties, martensitic transformations

中图分类号:  (Other ferromagnetic metals and alloys)

  • 75.50.Cc
81.30.Kf (Martensitic transformations) 64.70.kd (Metals and alloys)