| S含量对高速车轮钢性能和夹杂物的影响 |
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| 引用本文： | 余音宏,潘涛 尹建成 苏航 马跃.S含量对高速车轮钢性能和夹杂物的影响[J].钢铁,2013,48(10):57-62. |
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| 作者姓名： | 余音宏 潘涛 尹建成 苏航 马跃 |
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| 作者单位： | 1. 昆明理工大学材料科学与工程学院, 云南 昆明, 650093 2.钢铁研究总院工程用钢研究所, 北京, 100081 |
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| 摘 要： | 研究了S含量对高速车轮钢性能和夹杂物的影响。借助扫描电镜（SEM）对车轮钢中MnS，Al2O3等夹杂物进行了观察和统计分析，结果表明：随着S质量分数的增加（0.002%~0.014%），车轮钢的强度基本保持同一水平但冲击韧性先增加后降低，在S质量分数为0.011%时韧性最优。其原因在于S含量的增加可以有效地促进塑性较好的MnS对硬性的Al2O3相的包裹，从而改善钢的韧性；但S含量过度增加则导致MnS量过多，反而对韧性不利。
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| 关 键 词： | 高速车轮钢 S含量 夹杂物 统计分析 |
| 收稿时间： | 2012-12-28 |
Effect of Sulfur Contents on Properties and Inclusions in High Speed Wheel Steels |
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| YU Yin-hong,PAN Tao,YIN Jian-cheng,SU Hang,MA Yue.Effect of Sulfur Contents on Properties and Inclusions in High Speed Wheel Steels[J].Iron & Steel,2013,48(10):57-62. |
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| Authors: | YU Yin-hong PAN Tao YIN Jian-cheng SU Hang MA Yue |
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| Affiliation: | 1. School of Materials Science and Engineering, Kunming University of Science and Technology,Kunming 650093, Yunnan，China 2. Division of Engineering Steels, Central Iron and Steel Research Institute, Beijing 100081, China |
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| Abstract: | Effect of different contents of sulfur on the properties and inclusions in the high speed wheel steels was investigated. Inclusions (MnS, Al2O3) in the high speed wheel steels were observed by scanning electron microscopy (SEM) and statistically analyzed. The results show that, the impact toughness of the wheel steels increases with the ascending of sulfurs (0.002%-0.014%) at the beginning and gets the maximum at 0.011% then descends, while the strength remain almost the same level. The reason is that the increasing of the sulfur contents can effectively promote the covering ablity of MnS to Al2O3, which is good to the toughness of steels. However, too large content of sulfur is harm to the toughness of the wheel steels, for the excessive amount of MnS is got in this case. |
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| Keywords: | high speed wheel steels sulfur contents inclusions statistical analysis |
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