目的 采用激光与缆式焊丝（ER50-6）电弧复合焊对A36中厚板进行了激光-缆式焊丝电弧复合焊接,研究焊接工艺对接头组织和性能的影响以及腐蚀行为规律。方法 首先,采用激光与缆式焊丝电弧复合焊的方法进行对接试板焊接实验,其次,对比分析焊接接头的焊缝形貌、力学性能、显微组织;最后进行焊接接头电化学腐蚀试验。结果 激光与缆式焊丝电弧复合焊焊缝成形良好,焊接接头拉伸断裂位置在母材,焊缝平均抗拉强度为516 MPa,接头硬度值小于350HV,符合标准要求;焊接接头焊缝区、热影响区显微组织由铁素体、粒状贝氏体和马氏体组成;激光与缆式焊丝电弧复合焊接头耐腐蚀性优于激光-电弧复合焊的耐腐蚀性,母材自腐蚀电位低于焊缝的自腐蚀电位;随着NaCl质量分数的增大,自腐蚀电位向负方向移动,自腐蚀电流密度上升,焊缝容抗弧半径大于母材且随质量分数的增加而减小。结论 激光与缆式焊丝电弧复合焊焊接接头组织和性能以及腐蚀行为与激光和单丝电弧复合焊的规律一致,该方法可以为中厚板应用提供理论基础。
Abstract
The work aims to employ laser-cable type welding wire (CWW) on A36 medium thick plates to examine how the welding process influences the joint structure, properties, and corrosion behavior. Firstly, a butt welding experiment was conducted by laser and CWW arc hybrid welding. Secondly, the morphology, mechanical properties, and microstructure of the welded joint were compared and analyzed. Finally, an electrochemical corrosion test was conducted on the welded joint. The laser-CWW GMAW arc hybrid welding seam had good formation, and the tensile fracture position of the welded joint was broken at the base metal. The average tensile strength of the welding seam was 516 MPa, and the joint hardness was less than 350HV, which met the standard requirements. The microstructure of the weld zone and heat affected zone of the welded joint is composed of ferrite, granular bainite, and martensite. The corrosion resistance of laser-CWW GMAW arc composite welded joints was better than that of laser arc hybrid welding, and the self-corrosion potential of the base material was lower than that of the welding seam. As the mass fraction of NaCl increased, the self-corrosion potential shifted towards the negative direction, the self-corrosion current density increased, and the arc radius of the welding seam capacitance was larger than that of the base metal and decreased with the increase of mass fraction. The microstructure, properties, and corrosion behavior of the welded joint in hybrid welding with laser and cable-type welding wire arc are consistent with those in hybrid welding with laser and single-wire arc. This method can provide a theoretical basis for the application of medium and thick plates.
关键词
激光-电弧复合焊 /
缆式焊丝 /
焊缝组织 /
力学性能 /
电化学腐蚀
Key words
laser-arc hybrid welding /
cable-type welding wire /
weld microstructure /
mechanical property /
electrochemical corrosion
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参考文献
[1] 薛松柏, 王博, 张亮, 等. 中国近十年绿色焊接技术研究进展[J]. 材料导报, 2019, 33(17): 2813-2830.
XUE S B, WANG B, ZHANG L, et al.Development of Green Welding Technology in China during the Past Decade[J]. Materials Reports, 2019, 33(17): 2813-2830.
[2] CHURIAQUE C, SÁNCHEZ-AMAYA J M, ÜSTÜ-NDAĞ Ö, et al. Improvements of Hybrid Laser Arc Welding for Shipbuilding T-Joints with 2F Position of 8 mm Thick Steel[J]. Optics & Laser Technology, 2021, 143: 107284.
[3] VENKATESH K M, ARIVAZHAGAN N, NAGE-SWARA R M, et al. Studies on Microstructure and Mechanical Properties of Weldments Produced in 12 mm Thick Naval Grade High Strength Low Alloy Steel for Sub-Zero Application by Single and Double Pass Hybrid Laser Arc Welding[J]. Journal of Materials Engineering and Performance, 2022, 31(4): 3234-3248.
[4] 孙艳芬, 朱天一, 田松亚. 埋弧焊热输入对Q355B厚板焊接接头组织及性能的影响[J]. 精密成形工程, 2025, 17(2): 122-129.
SUN Y F, ZHU T Y, TIAN S Y.Influence of Heat Input of Submerged Arc Welding on Micro-Structure and Properties of Q355B Thick Steel Welded Joint[J]. Journal of Netshape Forming Engineering, 2025, 17(2): 122-129.
[5] LI F K, TAO W, PENG G C, et al.Behavior and Stability of Droplet Transfer under Laser-MIG Hybrid Welding with Synchronized Pulse Modulations[J]. Journal of Manufacturing Processes, 2020, 54: 70-79.
[6] 刘伟亮, 王春生, 何广忠, 等. 500 MPa级耐候钢焊接接头的组织及性能[J]. 焊接技术, 2022, 10: 26-29.
LIU W L, WANG C S, HE G Z, et al.Microstructure and properties of 500 MPa grade weathering steel welded joints[J]. Welding Technology, 2022, 10: 26-29
[7] 罗高祥, 李超, 喻军, 等. 船用薄板激光-电弧复合焊工艺研究[J]. 金属加工(热加工), 2023(4): 14-17.
LUO G X, LI C, YU J, et al.Study on Laser Arc Composite Welding Process for Marine Thin Plate[J]. MW Metal Forming, 2023(4): 14-17.
[8] 倪晋尚. 汽车高强钢SG1000激光复合焊接力学性能研究[J]. 精密成形工程, 2023, 15(10): 177-186.
NI J S.Laser Composite Welding Mechanical Properties for Automobile High-Strength Steel SG1000[J]. Journal of Netshape Forming Engineering, 2023, 15(10): 177-186.
[9] 宋旷达, 朱加雷, 苗春雨, 等. 921A舰船钢激光-MAG复合焊接接头的组织及性能[J]. 热加工工艺, 2025, 54(3): 24-29.
SONG K D, ZHU J L, MIAO C Y, et al.Microstructure and Mechanical Properties of Laser-MAG Hybrid welded joint of 921A Ship Steel[J]. Hot Working Technology, 2025, 54(3): 24-29.
[10] 严春妍, 姜心怡, 周倩雯, 等. X80/X100异种钢激光-MIG复合焊接头显微组织和性能[J]. 焊接学报, 2023, 44(1): 20-26.
YAN C Y, JIANG X Y, ZHOU Q W, et al.Microstructure and Properties of Laser-MIG Hybrid Welded X80 and X100 Steel Dissimilar Joint[J]. Transactions of the China Welding Institution, 2023, 44(1): 20-26.
[11] 马彦龙, 陈辉, 赵旭, 等. 1 000 MPa级超高强钢激光复合焊接头力学性能研究[J]. 中国激光, 2021, 48(6): 0602113.
MA Y L, CHEN H, ZHAO X, et al.Mechanical Properties of Laser Hybrid Welded Joint of 1 000 MPa Ultrahigh-Strength Steel[J]. Chinese Journal of Lasers, 2021, 48(6): 0602113.
[12] 宋刚, 迟佳玉, 于景威, 等. 镁/钢激光-电弧复合焊接接头的腐蚀行为[J]. 材料导报, 2018, 32(16): 2773-2777.
SONG G, CHI J Y, YU J W, et al.Corrosion Behavior of Mg-Steel Laser-TIG Hybrid Welded Joint[J]. Materials Review, 2018, 32(16): 2773-2777.
[13] 韩金理, 王松, 张德芬, 等. 6009铝合金激光电弧复合焊接头腐蚀性能研究[J]. 材料导报, 2016, 30(S1): 490-493.
HAN J L, WANG S, ZHANG D F, et al.Study on Corrosion Properties of 6009 Aluminum Alloy Joint by Laser-Arc Hybrid Welding[J]. Materials Reports, 2016, 30(S1): 490-493.
[14] YANG Z D, FANG C F, WU M F, et al.The Mechanisms of Arc Coupling and Rotation in Cable-Type Welding Wire CO2 Welding[J]. Journal of Materials Processing Technology, 2018, 255: 443-450.
[15] YANG Z D, FANG C F, CHEN Y, et al.Effect of Forces on Dynamic Metal Transfer Behavior of Cable-Type Welding Wire Gas Metal Arc Welding[J]. The International Journal of Advanced Manufacturing Technology, 2018, 97(1): 81-90.
[16] FANG C F, HE B, ZHAO Z C, et al.Comparative Study on Processing Property between CWW CO2 Gas Shielded Welding and SAW[J]. Journal of Iron and Steel Research, International, 2013, 20(4): 81-86.
[17] CHEN Y, FANG C F, YANG Z D, et al.Cable-Type Welding Wire Arc Welding[J]. The International Journal of Advanced Manufacturing Technology, 2018, 94(1): 835-844.
基金
国家自然科学基金（51905231）; 中国博士后科学基金（2020M670943）
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