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| Effect of Rare Earth （Niobium） on Costed and Hot-Rolled Microstructure and Properties of Heavy Rail Steels | |
| 引用本文： | Yu Ning Sun Zhenyan Ji Jingwen Ren Xinjia Wang Yunsheng Wang Longmei. Effect of Rare Earth （Niobium） on Costed and Hot-Rolled Microstructure and Properties of Heavy Rail Steels[J]. 中国稀土学报(英文版), 2005, 23(5): 646-646 |
| 作者姓名： | Yu Ning Sun Zhenyan Ji Jingwen Ren Xinjia Wang Yunsheng Wang Longmei |
| 作者单位： | 1. Northeastern University，Shenyang 110004，China; 2. Research Institute of Iron and Steel，Baotou Iron and Steel Cor.，Baotou 014010，China; 3. Central Research Institute of Iron and Steel，Beijing 100081，China |
| 摘 要： | Effect of Rare Earth (Niobium) on Costed and Hot-Rolled Microstructure and Properties of Heavy Rail Steels |
| 关 键 词： | 稀土 铌 微观结构 锰钢 |
Effect of Rare Earth (Niobium) on Costed and Hot-Rolled Microstructure and Properties of Heavy Rail Steels |
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| Yu;Ning;Sun;Zhenyan;Ji;Jingwen;Ren;Xinjia;Wang;Yunsheng;Wang;Longmei. Effect of Rare Earth (Niobium) on Costed and Hot-Rolled Microstructure and Properties of Heavy Rail Steels[J]. Journal of Rare Earths, 2005, 23(5): 646-646 | |
| Authors: | Yu Ning Sun Zhenyan Ji Jingwen Ren Xinjia Wang Yunsheng Wang Longmei |
| Abstract: | A compared investigation was made on the microstructure and mechanical properties of continuous casting square blanks of BNbRE and U71Mn heavy rail steels having eutectoid composition. The variation of solidified structure of the square blanks was demonstrated by measuring hardness. The observation to the structure and inclusions in the head, waist and base of the hot-rolled rails of the test steels were carried out with optical microscope and SEM. It is found that the casting blanks of both tested steels compose of three areas with constant hardness and three hardness varying areas, and there is considerable P-eutectic structure in the blank of the U71Mn steel. The distribution of the inclusions in the U71Mn steel rail is mainly oxides in both rail head and rail base, and is mainly MnS in the waist of the rail. There has strong effect of the addition of rare earth elements on them. The discussion on these results was made. |
| Keywords: | rail steel niobium microstructure and property rare earths |
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