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Preparation and Properties of the Ni2MnGa Magnetic Shape Memory Alloy |
| LIANG Ting1,2;XU Hui-Bin1;JIANG Cheng-Bao1;GONG Sheng-Kai1 |
| 1Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083
2Department of Mechanics, Command and Engineering College of Chemical Defence, Beijing 102205
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| Cite this article: |
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LIANG Ting, XU Hui-Bin, JIANG Cheng-Bao et al 2000 Chin. Phys. Lett. 17 296-297 |
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Abstract The polycrystalline Ni48.2Mn22.4Ga29.4 alloys were prepared by means of melting in argon arc furnace. X-ray diffraction pattern indicates a fcc cubic structure with a lattice parameter of 0.5822nm at room temperature. The phase transformation temperatures were: 1°C for martensite start temperature, -11°C for martensite finish temperature, 3°C for austenite start temperature and 11°C for austenite start temperature, respectively. The results showed that the effect of magnetic field on the strains increases with the decrease of temperature. A strain of 2.1 x10-4 was obtained with an applied magnetic field of 5kOe at -66°C.
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| Keywords:
81.30.Kf
75.20.En
64.70.Kb
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Published: 01 April 2000
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