| 磁场对Ni51.5Mn24Ga24.5单晶马氏体相变的影响 |
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| 引用本文： | 李哲,敬超,陈继萍,鲁玉明,曹世勋,张金仓. 磁场对Ni51.5Mn24Ga24.5单晶马氏体相变的影响[J]. 功能材料, 2007, 38(9): 1422-1426 |
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| 作者姓名： | 李哲 敬超 陈继萍 鲁玉明 曹世勋 张金仓 |
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| 作者单位： | 上海大学,物理系,上海,200444 |
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| 基金项目： | 上海市自然科学基金 , 国家自然科学基金 , 国家自然科学基金 |
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| 摘 要： | 分析了Ni51.5Mn24Ga24.5单晶样品在不同磁场下的马氏体相变温度和热滞后温度,并基于相界摩擦理论计算了样品在不同磁场下马氏体相变过程中相界摩擦所产生的能耗(FHr).结果表明,对于不同磁场下相界推移所产生的能耗与实验观察到的热滞后温度变化规律基本一致,说明了相界摩擦理论较好地解释了Ni-Mn-Ga合金在外加磁场情况下相变过程中的热力学问题.
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| 关 键 词： | 马氏体相变 热滞 相界摩擦 |
| 文章编号： | 1001-9731（2007）09-1422-05 |
| 修稿时间： | 2007-02-282007-06-04 |
The magnetic field influence on martensitic phase transition in Ni51.5Mn24Ga24.5 single crystal |
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| LI Zhe,JING Chao,CHEN Ji-ping,LU Yu-ming,CAO Shi-xun,ZHANG Jin-cang. The magnetic field influence on martensitic phase transition in Ni51.5Mn24Ga24.5 single crystal[J]. Journal of Functional Materials, 2007, 38(9): 1422-1426 |
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| Authors: | LI Zhe JING Chao CHEN Ji-ping LU Yu-ming CAO Shi-xun ZHANG Jin-cang |
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| Affiliation: | Department of Physics, Shanghai University, Shanghai 200444, China |
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| Abstract: | The martensitic transition temperature and thermal hysteresis temperature were investigated of Ni51.5 Mn24 Ga24.5 Single crystals in various magnetic fields. Base to a boundary frication phenomenological theory, we calculated the energy consumed for phase boundary motion in this sample during martensitic transformation. It was found that the energy consumed for phase boundary motion is coincident with thermal hysteresis tempera- ture dependencies of magnetic-field . These results make clear the thermodynamics matter by using boundary frication phenomenological theory, during martensitic transformation. |
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| Keywords: | martensitic transformation thermal hysteresis phase boundary friction |
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