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材料工程  2017, Vol. 45 Issue (1): 7-13    DOI: 10.11868/j.issn.1001-4381.2015.000051
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
预变形对304L焊接组织的影响
吴珞菲1, 成强2, 李铸国1
1. 上海交通大学 材料科学与工程学院, 上海 200240;
2. 东南大学 材料科学与工程学院, 南京 211189
Effect of Prior Deformation on Welding Microstructure of Steel 304L
WU Luo-fei1, CHENG Qiang2, LI Zhu-guo1
1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. School of Materials Science & Engineering, Southeast University, Nanjing 211189, China
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摘要 基于某汽车公司提出的曲面焊接设计需求,研究了变形对焊接组织的影响。选用熔化极气体保护焊在奥氏体不锈钢304L的T型接头和变形钢板上焊接,寻求合理的变形后焊接参数并观察变形对焊接组织的影响。得到合理焊接参数为焊枪速率4mm/s,送丝速率2.5m/min,电压17V。在T型和变形后焊接中,焊趾分别处于应变为0%,30%的区域,观察到变形后焊接件中熔化区和部分熔化区范围减小,焊接接头碳化物沉积和晶间铁素体数量减小。304L变形后焊接获得了更为均匀的接头组织。
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关键词 预变形熔化极气体保护焊焊接工艺微观组织    
Abstract:This subject was raised by an automotive company.Based on the welding design on the curved surface,the effect of prior deformation on the weld structure was studied.Metal active-gas welding was used on the T-joint and pre-deformed plates of austenitic stainless steel 304L to find the proper welding parameters and observe the effect of prior deformation on the microstructure.The proper parameters acquired are:the speed of the torch is 4mm/s,the speed of delivery of welding wire is 2.5m/min and the voltage is 17V.In the T-joint and pre-deformed joint,the weld toes are in the zone with strain of 0% and 30%.In the pre-deformed welding specimen,it was observed that the fusion zone and partially melted zone are narrowed,carbide precipitation and ferrites are found less.In all,the microstructure in the pre-deformed weld joints on 304L is more uniform.
Key wordsprior deformation    metal active-gas    welding process    microstructure
收稿日期: 2015-01-10      出版日期: 2017-01-19
中图分类号:  TG457.11  
通讯作者: 李铸国(1972-),男,教授,博士生导师,从事专业为激光焊接与表面工程,联系地址:上海市闵行区东川路800号上海交通大学材料学院E楼203室(200240),E-mail:lizg@sjtu.edu.cn     E-mail: lizg@sjtu.edu.cn
引用本文:   
吴珞菲, 成强, 李铸国. 预变形对304L焊接组织的影响[J]. 材料工程, 2017, 45(1): 7-13.
WU Luo-fei, CHENG Qiang, LI Zhu-guo. Effect of Prior Deformation on Welding Microstructure of Steel 304L. Journal of Materials Engineering, 2017, 45(1): 7-13.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.000051      或      http://jme.biam.ac.cn/CN/Y2017/V45/I1/7
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