Magnetic-field-induced microstructural features in a high carbon steel during diffusional phase transformation
Magnetic-field-induced microstructural features in a high carbon steel during diffusional phase transformation
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高碳钢扩散相变过程中磁场诱导的微观结构特征
DOI：
10.1016/j.jmmm.2012.07.041
复制
发表时间：
2012-12
影响因子：
2.7
通讯作者：
Zuo, Liang1
中科院分区：
文献类型：
--
作者：
Zhang, Xiaoxue1, 2, 3;Zhang, Yudong2, 3;Gong, Minglong1;Esling, Claude2, 3;Zhao, Xiang1;Zuo, Liang1
在这项工作中，一个高纯度，高碳钢热处理无和有12 T的磁场。利用光学显微镜和SEM/EBSD研究了磁场诱导扩散控制奥氏体分解过程中的组织特征。结果表明，磁场使奥氏体晶粒尺寸增大，促进了贫碳奥氏体向铁素体的转变，从而增加了由沿沿着原奥氏体晶界的先共析铁素体及其周围铁素体组成的异常组织的数量。在未经场处理或经过场处理的试样中，未发现异常铁素体与渗碳体之间存在特定的取向关系。磁场通过提高相变温度促进碳的扩散和提高铁素体/铁素体的相对界面能，从而明显促进珠光体的球化。由于磁场有利于高磁化强度相珠光体铁素体形核，因此，在珠光体相变过程中，P-P2 OR的出现与铁素体先于珠光体形核的情况相对应。
In this work, a high purity, high carbon steel was heat treated without and with a 12-T magnetic field. The microstructural features induced by magnetic field during its diffusion-controlled austenite decomposition were investigated by means of optical microscopy and SEM/EBSD. It is found that the magnetic field increases the amount of the abnormal structure, which is composed of proeutectoid cementite along the prior austenite boundaries and ferrite around it, because magnetic field increases the austenite grain size and promotes the transformation of carbon-depleted austenite to ferrite. No specific orientation relationship between abnormal ferrite and cementite has been found in the non-field- or the field-treated specimens. Magnetic field evidently promotes the spheroidization of pearlite, due to its effect of enhancing carbon diffusion through raising the transformation temperature and its effect of increasing the relative ferrite/cementite interface energy. As magnetic field favors the nucleation of the high magnetization phase-pearlitic ferrite, the occurrence of the P-P2 OR that corresponds to the situation that ferrite nucleates prior to cementite during pearlitic transformation is enhanced by the magnetic field.
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DOI：
10.11890/1006-7191-104-248
发表时间：
2010-08
期刊：
Acta Metallurgica Sinica (english Letters)
影响因子：
--
作者：
Wu Kai-Meng
通讯作者：
Wu Kai-Meng
过共析钢奥氏体分解过程中高磁场引起的显微组织特征
影响因子：
6
作者：
通讯作者：
--
影响因子：
3.2
作者：
T. Garcin;S. Rivoirard;F. Gaucherand;E. Beaugnon
通讯作者：
T. Garcin;S. Rivoirard;F. Gaucherand;E. Beaugnon
DOI：
10.1088/0022-3727/40/21/005
发表时间：
2007-10
期刊：
Journal of Physics D: Applied Physics
影响因子：
--
作者：
Yikun Zhang;C. Esling;Marion Calcagnotto;M. Gong;Xiang Zhao;L. Zuo
通讯作者：
Yikun Zhang;C. Esling;Marion Calcagnotto;M. Gong;Xiang Zhao;L. Zuo
影响因子：
4.5
作者：
Yudong Zhang;G. Vincent;N. Dewobroto;L. Germain;Xiang Zhao;L. Zuo;C. Esling
通讯作者：
Yudong Zhang;G. Vincent;N. Dewobroto;L. Germain;Xiang Zhao;L. Zuo;C. Esling