Preparation and Properties of the Ni 2 MnGa Magnetic Shape Memory Alloy
Preparation and Properties of the Ni 2 MnGa Magnetic Shape Memory Alloy
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DOI：
10.1088/0256-307x/17/4/023
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发表时间：
2000-04
影响因子：
3.5
通讯作者：
L. Ting;Xu Huibin;Jiang Chengbao;G. Shengkai
中科院分区：
文献类型：
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作者：
L. Ting;Xu Huibin;Jiang Chengbao;G. Shengkai
采用氩弧炉熔炼的方法制备了多晶Ni48.2Mn22.4Ga29.4合金。 X射线衍射图显示室温下晶格参数为0.5822 nm的fcc立方结构。相变温度分别为：马氏体开始温度1℃、马氏体结束温度-11℃、奥氏体开始温度3℃、奥氏体开始温度11℃。结果表明，磁场对应变的影响随着温度的降低而增大。在-66°C 施加5 kOe 磁场时获得2.1 × 10-4 的应变。
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 0.5822 nm 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 × 10-4 was obtained with an applied magnetic field of 5 kOe at -66°C.