预变形对304L焊接组织的影响
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1 7V。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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| Published in | 材料工程 Vol. 45; no. 1; pp. 7 - 13 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
上海交通大学材料科学与工程学院,上海,200240%东南大学材料科学与工程学院,南京,211189
2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 1001-4381 |
| DOI | 10.11868/j.issn.1001-4381.2015.000051 |
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| Summary: | 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1 7V。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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| Bibliography: | 11-1800/TB 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） 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 jo in t, the weld toes are in the zone with strain of 0% and 30%. In the pre-deformed welding specimen, i t was observed that the fu-sion zone and partially melted zone are narrowed, carbide precipitation and ferrites are foun |
| ISSN: | 1001-4381 1001-4381 |
| DOI: | 10.11868/j.issn.1001-4381.2015.000051 |