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| 形变诱导铁素体相变机制模拟 | |
| 引用本文： | 王倩,杨忠民,吴春京.形变诱导铁素体相变机制模拟[J].钢铁研究学报,2009,21(3):27-0. |
| 作者姓名： | 王倩 杨忠民 吴春京 |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京100083;中国钢研科技集团公司结构材料研究所,北京100081 2. 中国钢研科技集团公司结构材料研究所,北京,100081 3. 北京科技大学材料科学与工程学院,北京,100083 |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| 摘 要： | 通过对室温组织为顺磁性奥氏体的Fe Ni Cr合金，变形后不同温度下的磁化强度和交流磁化率研究表明，一定条件的变形可以改变顺磁性奥氏体的磁自由能，进而对合金体系自由能产生影响；而且变形对合金体系磁自由能的作用规律是在完全顺磁性区会降低磁自由能，过渡区会提高磁自由能，铁磁性区又会降低磁自由能，从而从热力学角度确认了诱导铁素体相变最佳温度区间的存在。 |
| 关 键 词： | 形变诱导铁素体相变 磁化强度 交流磁化率 |
| 收稿时间： | 1900-01-01; |
Analog of Mechanism of Deformation-Induced Ferrite Transformation |
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| WANG Qian,YANG Zhong-min,WU Chun-jing.Analog of Mechanism of Deformation-Induced Ferrite Transformation[J].Journal of Iron and Steel Research,2009,21(3):27-0. | |
| Authors: | WANG Qian YANG Zhong-min WU Chun-jing |
| Affiliation: | 1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Institute for Structure Materials, China Iron and Steel Research Institute Group, Beijing 100081, China |
| Abstract: | The results of magnetization and AC susceptibility at different temperatures after deformation for austenitic Fe Ni Cr alloy which is paramagnetic at room temperature showed that deformation under certain conditions may change magnetic free energy of paramagnetic austenite and further influence free energy of alloy system. Moreover, the effect of deformation on magnetic free energy of alloy system was different. Namely, the magnetic free energy decreased in the entire paramagnetic region, and increased in the transition region but decreased again in the ferromagnetic region. Thereby, based on the thermodynamics analysis, the existence of optimal temperature region where deformation induced ferrite transformation (DIFT) occurs is confirmed. |
| Keywords: | deformation??induced ferrite transformation magnetization AC susceptibility |
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