| 铁磁形状记忆合金NiMnGa相界面运动的能量和热滞后 |
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| 引用本文： | 赵爱军,闫军喜,李迪,钱林建,吴飞飞,崔玉亭. 铁磁形状记忆合金NiMnGa相界面运动的能量和热滞后[J]. 渝西学院学报(自然科学版), 2012, 0(3): 33-35,47 |
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| 作者姓名： | 赵爱军 闫军喜 李迪 钱林建 吴飞飞 崔玉亭 |
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| 作者单位： | [1]重庆师范大学物理和电子工程学院,重庆沙坪坝400047 [2]商丘技师学院,河南商丘476000 |
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| 基金项目： | 国家自然科学基金项目（11074160）;重庆市科技攻关计划项目（2008AC4011）. |
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| 摘 要： | 基于热力学理论，结合实验测量数据，计算了相变温度分别在室温以下、室温附近、室温以上3种情况下铁磁形状记忆合金NiMnGa单晶马氏体相变过程中的相关能量，并进行了分析．结果进一步表明：相变循环曲线分支的斜率取决于弹性应变能，而相变热滞后起源于相界面摩擦．
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| 关 键 词： | 马氏体相变 热滞后 界面运动 弹性应变能 |
Energy of phase boundary motion and thermal hysteresis in Ferromagnetic NiMnGa shape -memory alloys |
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| Affiliation: | ZHAO Ai -jun, YAN Jun -xi , LI Di , QIAN Lin-jian , WU Fei -fei , CUI Yu-ling ( 1. College of Physics and Electronic Engineering, Chongqing Normal University, Shapingba Chongqing 400047, China; 2. College of Technique and Engineering, Shangqiu Henan 4？6000, China) |
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| Abstract: | Based on the thermo - dynamical theory and some experimental data, the relevant energy contributions related to the thermoelastic martensitic transformation for three off - stoichiometrie NiMnGa single crystals with the transformation temperature below, near and above room temperature, respectively, were calculated, and their influence to the transformation behavior was discussed. The results identify further that for a completely thermoelastic martensitic transformation, the slope of the transformation loop results from the elastic strain energy, and the thermal hysteresis comes from the friction of interfacial motion. |
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| Keywords: | Martensitic transformation thermal hysteresis interfacial motion elastic strain energy |
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