| 奥氏体化状态和钒对珠光体型钢轨钢韧性的影响 |
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| 引用本文： | 朱晓东,邹明,等.奥氏体化状态和钒对珠光体型钢轨钢韧性的影响[J].北京科技大学学报,1996,18(6):532-537. |
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| 作者姓名： | 朱晓东 邹明 |
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| 作者单位： | 北京科技大学材料科学与工程系，攀枝花钢铁（集团）公司 |
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| 摘 要： | 以重轨钢ＰＤ２和ＰＤ３为对象，重点研究了热轧态和重新热处理状态珠光体的韧性。研究结果表明，奥氏体状态（晶粒大小、成分均匀化及碳化物溶入或析出程度等）及珠光体的形态和片层间距是影响珠光体冲击韧性的主要组织因素。奥氏体晶粒的细化、珠光体片层的细化、奥氏体成分的均匀化及强碳化物形成元素在奥氏体状态的固溶化是珠光体钢韧化的基本途径。
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| 关 键 词： | 钢轨钢，珠光体，冲击韧性 |
Influence of Austenizing Condition and Vanadium on the Impact Toughness of Pearlitic Rail Steels |
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| Zhu Hiaodong,Li Chengji,Zhang Shouhua,Zou Ming,Su Shihuai.Influence of Austenizing Condition and Vanadium on the Impact Toughness of Pearlitic Rail Steels[J].Journal of University of Science and Technology Beijing,1996,18(6):532-537. |
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| Authors: | Zhu Hiaodong Li Chengji Zhang Shouhua Zou Ming Su Shihuai |
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| Institution: | Zhu Hiaodong1),Li Chengji1),Zhang Shouhua1),Zou Ming2),Su Shihuai2) |
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| Abstract: | Heavy rail steels,PD2 and PD3,are chosen for the investigation of the impact tougness in as-rolled and reheated state.The results show that the condition of austenite(austenite grain size,homogeneity of chemical contents as well as dissolution and precipitation of carbides),the morphorlogy of pearlite and the interlamellar spacing are the three main structure factors influencing the toughness of pearlite.A basic plan for the toughening of pearlite rail steels is presented,which includes refinement of austenite grain and pearlite interlamellar spacing,homogenization of austenite content and complete dissolution of strong carbide forming elements in the austenite. |
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| Keywords: | rail steels pearlite impact toughness |
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