| 磁场对镍基Ni-Mn-Ga铁磁合金相变温度影响的热力学分析 |
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| 引用本文： | 赵容兵,赵运才. 磁场对镍基Ni-Mn-Ga铁磁合金相变温度影响的热力学分析[J]. 江西有色金属, 2012, 0(1): 1-4 |
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| 作者姓名： | 赵容兵 赵运才 |
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| 作者单位： | [1]江西恒大高新技术股份有限公司,南昌330096 [2]江西理工大学机电工程学院,江西赣州341000 |
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| 基金项目： | 国家自然科学基金资助项目（50965008） |
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| 摘 要： | 通过测量磁化曲线、电阻-温度关系和热分析等手段,研究了磁场对镍基铁磁合金试样Ni-Mn-Ga相变的影响.结果表明：在磁场作用下相变温度升高了约1.5 K,具有明显的磁场影响特征.利用马氏体相变热力学理论,研究了磁场对镍基铁磁合金化学自由能和非化学自由能与温度的变化关系,建立了其作用的数理模型,并与实验结果比较后基本吻合.
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| 关 键 词： | 磁场 镍基铁磁合金 相变温度 热力学分析 |
Thermodynamic analysis of phase transformation temperature affected by magnetic field on nickel-base Ni-Mn-Ga ferromagnetic alloy |
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| ZHAO Rong-bing,ZHAO Yun-cai. Thermodynamic analysis of phase transformation temperature affected by magnetic field on nickel-base Ni-Mn-Ga ferromagnetic alloy[J]. Jiangxi Nonferrous Metals, 2012, 0(1): 1-4 |
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| Authors: | ZHAO Rong-bing ZHAO Yun-cai |
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| Affiliation: | 1.Jiangxi HengDa Hi-tech Industry Co.Ltd.,Nanchang 330096,China;2.School of Mechanic and Electronic Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China) |
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| Abstract: | Nickel-base ferromagnetic alloy Ni-Mn-Ga was investigated for phase transformation temperature affected by magnetic field by measuring magnetization curve,temperature dependence of the resistance,and thermal analysis.The results show that magnetic field application can increase phase transformation temperature 1.5 K with distinctive behavioral affected by field.Meanwhile,thermodynamic theory of martensitic phase transformation is applied to study temperature dependence of the chemical free energy and non-chemical free energy on nickel-base ferromagnetic alloy;a mathematical model is built and agrees well with experimental result. |
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| Keywords: | magnetic field； nickel-base ferromagnetic alloy； phase transformation temperature； thermodynamic analysis |
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