钒对微合金化重轨钢高温塑性的影响

特殊钢 ›› 2010, Vol. 31 ›› Issue (4): 26-27.

钒对微合金化重轨钢高温塑性的影响

刘霞¹, 史凤武², 王晓丽³ 焦国利⁴

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

收稿日期:2010-02-27 出版日期:2010-08-01 发布日期:2022-11-20
作者简介:刘霞(1966-),女，研究生，副教授，冶金机械研究。

Influence of Vanadium on Hot Plasticity of Microalloying Heavy Rail Steel

Liu Xia¹, Shi Fengwu², Wang Xiaoli ³, Jiao Guoli⁴

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 Mechanical Equipment Manufacture Co,Baotou Iron and Steel Corp,Baotou 014010

Received:2010-02-27 Published:2010-08-01 Online:2022-11-20

摘要/Abstract

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℃。

关键词: 微合金化重轨钢, 钒, 高温塑性

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.

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.

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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