| 高温电加热处理对贝氏体钢与U75V钢闪光对焊接头组织与性能的影响 |
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| 引用本文： | 王振伟,许鸿吉,王赫.高温电加热处理对贝氏体钢与U75V钢闪光对焊接头组织与性能的影响[J].铁道建筑,2019(4):144-147. |
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| 作者姓名： | 王振伟 许鸿吉 王赫 |
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| 作者单位： | 中铁山桥集团有限公司;大连交通大学材料科学与工程学院 |
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| 摘 要： | 通过静弯、拉伸、冲击、金相和硬度试验,对高温电加热处理前后贝氏体钢辙叉与U75V钢轨闪光对焊接头的组织和性能进行了研究。研究结果表明:高温电加热处理对焊接接头组织和硬度均匀化有良好的作用,且经过热处理后焊接接头的拉伸和冲击性能均得到一定程度改善,满足标准要求,特别是冲击性能得到了显著提高。
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| 关 键 词： | 钢轨焊接 高温电加热处理 焊接接头 试验研究 U75V 钢 贝氏体钢 |
Influences of High Temperature Electric Heating on Constitutions and Properties of Bainite Steel and U75V Steel Flash Butt-welded Joints |
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| WANG Zhenwei,XU Hongji,WANG He.Influences of High Temperature Electric Heating on Constitutions and Properties of Bainite Steel and U75V Steel Flash Butt-welded Joints[J].Railway Engineering,2019(4):144-147. |
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| Authors: | WANG Zhenwei XU Hongji WANG He |
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| Institution: | (China Railway Shanhaiguan Bridge Group Co. Ltd. ,Qinhuangdao Hebei 066205,China;School of Materials Science and Engineering,Dalian Jiaotong University,Dalian Liaoning 116028,China) |
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| Abstract: | Through static bending,tensile,impact,metallographic and hardness tests,the inf luences of high temperature electric heating on constitutions and properties of bainite steel and U75V steel f lash butt-welded joints were studied.The results show that the high temperature electric heating has good effect on the constitution and hardness homogenization of welded joint,and can improve the tensile and impact properties,which satisfy the requirements of the standard.In particular,the impact property has been signif icantly improved. |
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| Keywords: | Rail welding High temperature electric heating Welded joint Experimental study U75V steel Bainite steel |
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