Effect of Copper Interlayer on the Quality of Laser Lap Welding of Stainless Steel Aluminum Alloy

ZHAO Guoxin; ZHANG Yu; WANG Ting; KANG Lei

doi:10.7512/j.issn.1001-2303.2024.05.16

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Effect of Copper Interlayer on the Quality of Laser Lap Welding of Stainless Steel Aluminum Alloy
Vol. 54, Issue 5, Pages: 111-116(2024)
Published： 25 May 2024 ，
DOI： 10.7512/j.issn.1001-2303.2024.05.16

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赵国新，张宇，王亭，等.铜中间层对不锈钢-铝合金激光搭接焊质量的影响［J］.电焊机，2024，54（5）：111-116.

ZHAO Guoxin, ZHANG Yu, WANG Ting, et al.Effect of Copper Interlayer on the Quality of Laser Lap Welding of Stainless Steel Aluminum Alloy[J].Electric Welding Machine, 2024, 54(5): 111-116.
赵国新，张宇，王亭，等.铜中间层对不锈钢-铝合金激光搭接焊质量的影响［J］.电焊机，2024，54（5）：111-116. DOI： 10.7512/j.issn.1001-2303.2024.05.16.

ZHAO Guoxin, ZHANG Yu, WANG Ting, et al.Effect of Copper Interlayer on the Quality of Laser Lap Welding of Stainless Steel Aluminum Alloy[J].Electric Welding Machine, 2024, 54(5): 111-116. DOI： 10.7512/j.issn.1001-2303.2024.05.16.

摘要

探讨了不同厚度铜中间层对301L不锈钢和6082-T6铝合金激光焊接接头组织和力学性能的影响。试验采用10 kW光纤激光器，机器人自动化焊接，并设定了不同的焊接功率和速度。结果表明，添加铜中间层后，在焊接速度为31 mm/s、激光功率3.1~3.5 kW时均能获得外观质量良好的焊缝；随着焊接热输入量的增加，焊缝形貌由V形向钉子形转变，而当铜中间层厚度为0.1 mm时，焊缝出现明显的缩颈；添加铜中间层后，焊缝边缘硬度降低，韧性和力学性能提高，裂纹减少；拉剪强度随焊接参数增加先升后降，当铜中间层厚度为0.05 mm、激光功率3.1 kW、焊接速度31 mm/s时，焊缝拉剪强度最高；不同厚度铜中间层的最佳焊接参数不同；铜中间层能有效改善不锈钢和铝合金激光焊缝的质量，提高接头力学性能，但需选择适宜的铜中间层厚度和焊接参数。

Abstract

The study explored the effects of different thicknesses of copper interlayers on the microstructure and mechanical properties of laser-welded joints between 301L stainless steel and 6082-T6 aluminum alloy. The experiment utilized a 10 kW fiber laser with robotic automation for welding

and various welding powers and speeds were set. The results indicated that with the addition of a copper interlayer

good weld appearance quality could be achieved at a welding speed of 31 mm/s and laser power between 3.1~3.5 kW. As the welding heat input increased

the weld morphology shifted from V-shaped to nail-shaped

and when the copper interlayer thickness was 0.1 mm

the weld exhibited significant necking. The addition of a copper interlayer led to a reduction in hardness at the weld edge

an increase in toughness and mechanical properties

and a decrease in cracks. The tensile-shear strength first increased and then decreased with the increase of welding parameters

reaching the highest value when the copper interlayer thickness was 0.05 mm

the laser power was 3.1 kW

and the welding speed was 31 mm/s. The optimal welding parameters varied with the thickness of the copper interlayer. The copper interlayer effectively improved the quality of laser welds between stainless steel and aluminum alloy and enhanced the mechanical properties of the joints

but it was necessary to select an appropriate thickness of the copper interlayer and welding parameters.

关键词

铜中间层异种金属激光焊接焊缝质量

Keywords

copper interlayerdissimilar metalslaser weldingweld quality

references

潘占福，李悦，付林. 轻量化技术在汽车上的应用［J］.汽车工艺与材料，2021（5）：1-8.

PAN Z F，LI Y，FU L. Application of Lightweight Technologies on Automobiles［J］. Automobile Technology & Material，2021（5）：1-8.

韩晓辉，张志毅，李刚卿. 轨道客车轻量化材料及其连接技术的发展与展望［J］. 焊接，2020（10）：34-42.

HAN X H，ZHANG Z Y，LI G Q. Development and prospect of lightweight material and connection technology of rail bus［J］. Welding & Joining， 2020（10）：34-42.

肖广志，陈云，徐娟. 激光钎焊与激光熔焊在白车身制造中的应用［J］. 电焊机，2019，49（02）：99-102.

XIAO G Z，CHEN Y，XU J. Application of laser brazing and welding in body manufacture［J］. Electric Welding Machine，2019，49（02）：99-102.

王洪潇，何广忠，王春生. 高端不锈钢轨道车辆激光叠焊技术开发与应用［J］. 电焊机，2021，51（10）：31-36.

WANG H X，HE G Z，WANG C S. Development and application of laser welding for high standard stainless steel railway vehicle［J］. Electric Welding Machine，2021，51（10）：31-36.

袁军军，李聪，甘瑞根. 铝/镀锌钢激光填丝熔钎焊对接接头的组织与力学性能［J］. 热加工工艺， 2018，47（11）：71-75.

YUAN J J，LI C，GAN R G. Microstructure and Mechanical Properties of Wire Feeding Laser Welding-brazing Butt Joint of Aluminium/Galvanized Steel［J］. Hot Working Technology， 2018，47（11）：71-75.

Laukant H，Wallmann E，Muller M，et al. Fluxless laser beam joining of aluminium with zinc coated steel［J］. Science and Technology of Welding and Joining，2005，10（2）：219-226.

余淑荣，蒋锴，樊丁. 5056铝合金/镀锌钢预置涂粉激光熔钎焊组织及性能研究［J］. 机械工程学报，2014，50（12）：83-88.

YU S R，JIANG K，FAN D. 5056 Aluminum Alloy and Coated Steel Overlapped Fusion Welding-brazing by Laser with Preset Filler Powder［J］. Journal of Mechanical Engineering， 2014，50（12）：83-88.

崔丽，钱伟，潘峰. 焊接速度对钢/铝异种金属激光深熔焊接头特性的影响［J］. 北京工业大学学报，2018，44（10）：1347-1352.

CUI L，QIAN W，PAN F. Effects of Welding Speed on Characteristics of Dissimilar Steel/Al Joints Produced by Laser Keyhole Welding［J］. Journal of Beijing University of Technology， 2018，44（10）：1347-1352.

杨旭东，石岩，刘佳. 铜箔中间层对铝/钢异种金属激光对接焊接头质量的影响［J］. 机械工程学报，2014，50（14）：143-149．

YANG X D，SHI Y，LIU J. Effect of Cu Foil on Laser Butt Welding Quality of Aluminum/Steel Dissimilar Metals Joint［J］. Journal of Mechanical Engineering，2014，50（14）：143-149．

李镇，石岩，刘佳. 铜镀层对铝/钢异种金属激光填粉焊接质量的影响［J］.应用激光，2016，36（2）：176-180.

LI Z，SHI Y，LIU J. Influence of Copper Coating on the Quality of Aluminum/Steel with Laser Powder filling Welding［J］. Applied Laser，2016，36（2）：176-180.

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