| 氮对低碳高铬铸铁性能的影响 |
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| 引用本文： | 郑中甫,张茂勋,何福善. 氮对低碳高铬铸铁性能的影响[J]. 现代铸铁, 2006, 26(4): 72-73 |
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| 作者姓名： | 郑中甫 张茂勋 何福善 |
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| 作者单位： | 福州大学,机械工程学院,福建,福州,350002 |
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| 摘 要： | 通过力学性能、耐磨性能测试以及金相组织观察和ESEM形貌分析，研究了氮含量对低碳高铬铸铁性能的影响。试验结果表明，随着含氮量的增加，共晶碳化物在结晶过程中方向性生长减缓，形状趋于粒状；二次碳化物数量增加，形貌和尺寸也发生变化。随着含氮量的增加，低碳高铬铸铁的硬度增加，冲击韧度下降，滑动式和滚筒式磨损率下降。
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| 关 键 词： | 低碳白口铸铁 含氮铸铁 高铬铸铁 |
| 文章编号： | 1003-8345（2006）04-0068-04 |
| 收稿时间： | 2006-04-25 |
| 修稿时间： | 2006-04-25 |
Effects of Nitrogen on Properties of Low Carbon High Chromium Cast Iron |
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| ZHENG Zhong-fu,ZHANG Mao-xun,HE Fu-shan. Effects of Nitrogen on Properties of Low Carbon High Chromium Cast Iron[J]. Modern Cast Iron, 2006, 26(4): 72-73 |
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| Authors: | ZHENG Zhong-fu ZHANG Mao-xun HE Fu-shan |
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| Affiliation: | Fuzhou University, Fuzhou 350002, China |
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| Abstract: | The effects of nitrogen contents on properties of low carbon high chromium cast iron were studied in this paper by through mechanical properties and wear resistance testing, metallographic analysis and OM and ESEM morphology analysis. The experimental results showed that, with increase Of nitrogen content, the directive growth rate of the eutectic carbide during crystallization decreased, the carbide was becoming to be of grain shape, the amount of secondary carbides increased and their size and morphology was changing. Moreover, with increase of nitrogen contents of the low carbon and high chromium cast irons, the hardness increased, the impact toughness and the sliding and rolling wearing rates decreased |
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| Keywords: | Low carbon white cast iron Nitrogenous cast iron high chromium cast iron |
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