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
Preparation and Properties of the Ni2MnGa Magnetic Shape Memory Alloy
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
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.
LIANG Ting;XU Hui-Bin;JIANG Cheng-Bao;GONG Sheng-Kai. Preparation and Properties of the Ni2MnGa Magnetic Shape Memory Alloy[J]. 中国物理快报, 2000, 17(4): 296-297.
LIANG Ting, XU Hui-Bin, JIANG Cheng-Bao, GONG Sheng-Kai. Preparation and Properties of the Ni2MnGa Magnetic Shape Memory Alloy. Chin. Phys. Lett., 2000, 17(4): 296-297.
2000, Vol. 17 
