| Fe-3Si合金高温退火氮的均匀化过程 |
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| 引用本文： | 肖稳,储双杰,李国保,孙宝德.Fe-3Si合金高温退火氮的均匀化过程[J].钢铁研究学报,2010,22(4):45-45. |
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| 作者姓名： | 肖稳 储双杰 李国保 孙宝德 |
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| 作者单位： | 1. 上海交通大学金属基复合材料国家重点实验室,上海,200240
2. 宝山钢铁股份有限公司,上海,201900 |
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| 基金项目： | 国家杰出青年科学基金资助项目(50825401) |
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| 摘 要： | 通过对Fe-3Si合金脱碳板进行三个水平氮含量的渗氮并高温退火,用TC-436AR氧氮分析仪考察了高温退火过程中板厚方向上氮的分布,采用扩散理论讨论了氮的扩散过程。研究结果显示:高温退火过程中氮的总量发生变化;氮从750℃开始接近均匀;氮的扩散分为二部分:在550℃保温一小时,铁基体中的游离氮先扩散;在650℃以上,氮化物先分解,氮再扩散。
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| 关 键 词： | Fe-3Si合金 渗氮 高温退火 氮的均匀化过程 |
| 收稿时间： | 2009-05-11; |
Homogenization of Nitrogen in Fe-3Si Alloy at High-Temperature Annealing Process |
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| XIAO Wen,CHU Shuang-jie,LI Guo-bao,SUN Bao-de.Homogenization of Nitrogen in Fe-3Si Alloy at High-Temperature Annealing Process[J].Journal of Iron and Steel Research,2010,22(4):45-45. |
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| Authors: | XIAO Wen CHU Shuang-jie LI Guo-bao SUN Bao-de |
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| Affiliation: | 1.The State Key Laboratory of Metal Matrix Composites;Shanghai Jiao Tong University;Shanghai 200240;China;2.Silicon Branch;Baoshan Iron and Steel Co Ltd;Shanghai 201900;China |
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| Abstract: | Abstract: Decarburized plates of Fe-3% Si alloy were nitrited with nitrogen content in three levels, and then treated with high-temperature annealing. In the process of high-temperature annealing, the distribution of nitrogen through thickness was studied by means of TC-436AR oxygen and nitrogen analyzer, and the diffusion process was discussed with diffusion theory. It was found that: in the high-temperature annealing process, there were changes in nitrogen content; nitrogen started to uniform from 750℃; The diffusion process of nitrogen could be divided into two parts: Holding one hour at 550℃, free nitrogen in iron matrix first diffused; nitrogen from decomposition nitrides diffused above 650℃ later. |
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| Keywords: | Fe-3%Si alloy nitriding high-temperature annealing homogenization of nitrogen |
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