| 20Cr钢与B级钢焊接接头的组织和性能 |
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| 引用本文： | 许鸿吉,宋冰昕,常力,金光,李华,苏琴.20Cr钢与B级钢焊接接头的组织和性能[J].理化检验(物理分册),2009,45(3). |
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| 作者姓名： | 许鸿吉 宋冰昕 常力 金光 李华 苏琴 |
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| 作者单位： | 许鸿吉,宋冰昕,金光,苏琴,XU Hong-ji,SONG Bing-xin,JIN Guang,SU Qin(大连交通大学,材料科学与工程学院,大连,116028);常力,CHANG Li(长春轨道客车股份有限公司,长春,130062);李华,LI Hua(东芝水电设备(杭州)有限公司,杭州,311504)
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| 摘 要： | 采用低温冲击试验、拉伸试验、硬度试验以及金相分析等方法对ER50-6焊丝气体保护焊焊接20Cr钢与B级钢焊接接头的显微组织和性能进行了研究.结果表明,用ERS0-6焊丝气体保护焊焊接20Cr钢和B级钢可获得性能良好的焊接接头,其接头的强度不低于B级钢.焊缝组织为网状分布的先共析铁素体及少量无碳贝氏体;20Cr钢侧近缝区有无碳贝氏体及少量板条马氏体;在B级钢侧热影响区的块状铁素体基体上有少量粒状贝氏体.
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| 关 键 词： | 异种钢焊接 组织 力学性能 |
Microstructures and Mechanical Properties of the Welded Joints of 20Cr Steel and Level-B Steel |
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| XU Hong-ji,SONG Bing-xin,CHANG Li,JIN Guang,LI Hua,SU Qin.Microstructures and Mechanical Properties of the Welded Joints of 20Cr Steel and Level-B Steel[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2009,45(3). |
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| Authors: | XU Hong-ji SONG Bing-xin CHANG Li JIN Guang LI Hua SU Qin |
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| Abstract: | Microstructures and properties of 20Cr steel and level-B steel joints welded by gas metal arc welding with ER50-6 wire are investigated with low-temperature impact,room-temperature tensile test,hardness test and metallographic analysis.The results show that the joints welded by gas metal arc welding with ER50-6 wire have better performance and more strength than parent metal.The microstructure of welded metal mainly contains reticular proeutectoid ferrite and a little carbon-free bainite.Carbon-free bainite... |
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| Keywords: | dissimilar steels welding microstructure mechanical property |
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