Shift of the eutectoid point in the Fe–C binary system by a high magnetic field
Shift of the eutectoid point in the Fe–C binary system by a high magnetic field
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DOI：
10.1088/0022-3727/40/21/005
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发表时间：
2007-10
期刊：
影响因子：
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通讯作者：
Yikun Zhang;C. Esling;Marion Calcagnotto;M. Gong;Xiang Zhao;L. Zuo
中科院分区：
文献类型：
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作者：
Yikun Zhang;C. Esling;Marion Calcagnotto;M. Gong;Xiang Zhao;L. Zuo
本文的目的是实验研究Fe-C二元系在强磁场作用下共析点的移动。在12 T磁场下，共析碳含量从0.77 wt%变化到0.83 wt%。提出了一个实用而完整的计算方法-统计热力学模型的基础上-计算吉布斯自由能的相关相和预测的共析点的移动，由于磁场在成分和温度坐标。组成值被认为是在公平的协议与实验数据。两个位移的计算表明，由于12 T场，共析温度升高28.97 °C。磁场对共析碳含量和共析温度的影响不是线性的。碳含量和温度的移动速率都随着磁场的增加而减小。
The purpose of this paper is to investigate experimentally the shift of the eutectoid point in the Fe–C binary system when applying a high magnetic field. The eutectoid carbon content is observed to shift from 0.77 wt% to 0.83 wt% under a 12 T magnetic field. A practical and complete calculation method is proposed—on the basis of the statistical thermodynamic model—to calculate the Gibbs free energy of the related phases and predict the shift of the eutectoid point due to a magnetic field in both composition and temperature coordinates. The composition values are seen to be in fair agreement with the experimental data. The calculation of both shifts shows that the rise in eutectoid temperature because of the 12 T field is 28.97 °C. The impact of the magnetic field on both eutectoid carbon content and eutectoid temperature is not linear. The rate of the shift of both carbon content and temperature decreases as the magnetic field rises.