| 钒对微合金化重轨钢高温塑性的影响 |
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| 引用本文： | 刘霞,史凤武,王晓丽,焦国利.钒对微合金化重轨钢高温塑性的影响[J].特殊钢,2010,31(4):26-27. |
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| 作者姓名： | 刘霞 史凤武 王晓丽 焦国利 |
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| 作者单位： | 1 包头钢铁职业技术学院，包头014010;
2 包钢技术中心，包头014010;
3 北京科技大学冶金与生态工程学院，北京100083;
4包钢机制公司，包头014010 |
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| 摘 要： | 用Gleeble-1500D热模拟试验机研究了U71Mn钢(%:0.75C、1.20Mn)和U75V钢(%:0.75C、0.94Mn、0.05V、0.005Al)700～1300℃的高温塑性。结果表明,由于碳氮化钒在晶界和晶粒内部析出,加钒降低微合金化重轨钢的高温塑性,特别是第Ⅲ脆性区(850℃)的塑性。为防止铸坯裂纹出现,铸坯矫直温度应≥900℃。
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| 关 键 词： | 微合金化重轨钢 钒 高温塑性 |
| 收稿时间： | 2010-02-27 |
Influence of Vanadium on Hot Plasticity of Microalloying Heavy Rail Steel |
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| Liu Xia,Shi Fengwu,Wang Xiaoli,Jiao Guoli.Influence of Vanadium on Hot Plasticity of Microalloying Heavy Rail Steel[J].Special Steel,2010,31(4):26-27. |
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| Authors: | Liu Xia Shi Fengwu Wang Xiaoli Jiao Guoli |
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| Affiliation: | 1 Baotou Iron and Steel Vocational Technical College, Baotou 014010.
2 Technical Center,Baotou Iron and Steel Corp, Baotou 014010.
3 School of Metallurgical and Ecological Engineering, University of science and Technology, Beijing 100083;
4 MechanicalEquipmentManufactureCo,BaotouIronandSteelCorp,Baotou014010 |
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| Abstract: | Hot plasticity of U71Mn steel(%:0.75C,1.20Mn) and U75V steel (%:0.75C,0.94Mn,0.05V, 0.005Al) at 700~1300℃ has been studied by using Gleeble- 1500D thermo-simulation machine. Results show that as vanadium carbo-nitride precipitates at grain boundary and inside, the hot plasticity, especially the plasticity at Ⅲ brittle zone (850℃), of microalloying heavy rail steel decreases by adding vanadium. The strengthening temperature of cast bloom should be ≥900 ℃ to prevent bloom crack forming. |
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