Study on the formation of welding, microstructure, and properties of 5A06 aluminum alloy by ultrasonic laser-assisted filler welding

Zhang, Dengming; Yang, Yuchen; Zhao, Yijiang; Xu, Yafei; Lei, Zhenglong; Guo, HengTong; Li, Qian

doi:10.1360/sst-2019-0407

Cited by 5 publications

(1 citation statement)

References 1 publication

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“…Aluminum alloy with low density, high strength, strong corrosion resistance and strong plasticity is used as automotive and aerospace materials, rail transit, automobile manufacturing and other fields [1][2][3][4][5] . Especially with the continuous improvement of rolling technology of modern hollow thin-walled aluminum profile [6] , aluminum alloy has become the main material for lightweight manufacturing of new energy vehicle bodies [7][8][9] . The realization of high-quality welding of aluminum alloy is an important guarantee to improve the service safety and service life of aluminum alloy body.…”

Section: Introductionmentioning

confidence: 99%

Study on Microstructure and Properties of Mechanical Vibration-Assisted MIG Welded Joint of Aluminium Alloy Car Body

Gou

Wang

Zhao

2023

J. Phys.: Conf. Ser.

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The aluminium alloy MIG welding of car body has problems such as joint softening and porosity in the weld, which directly affects the welding quality of the body structure. In this study, mechanical vibration was introduced into the aluminium alloy MIG welding process as an external excitation by improving the joint microstructure and performance of aluminum alloy MIG welding. In the research process, optical microscope and scanning electronic microscope were used to observe the microstructure of the joint, observe the size of grains, detect the number of pores, test hardness, take tensile test, and study the influence of frequency of external vibration excitation on weld forming, pore distribution, microstructure and mechanical properties. Studies have shown that mechanical vibration can effectively refine the weld grain, reduce the number of weld pores, increase the penetration depth, improve the strength and hardness of the joint, and improve the welding quality of aluminum alloy. And with the increase of vibration frequency, the grain size and number of pores of the weld gradually decrease, and the penetration depth and tensile strength and hardness of the joint gradually increase.

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Section: Introductionmentioning

confidence: 99%

Study on Microstructure and Properties of Mechanical Vibration-Assisted MIG Welded Joint of Aluminium Alloy Car Body

Gou

Wang

Zhao

2023

J. Phys.: Conf. Ser.

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Weldability of Nickel/Aluminum Dissimilar Materials Laser Welding Part II: Microstructure Development, Solidification Behavior and Mechanical Properties of Polycrystalline Aluminum Alloy

Gao

2022

J. Phys.: Conf. Ser.

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The weldability and fabricability of nonheat treatable Aluminum-Magnesium alloy 5083H116 in shipbuilding industry by attractive laser welding are progressively assessed in this paper. The response of crack-resistant microstructure development, phase transformation and mechanical properties to energy input is very sensitive and distinguishable during laser welding process. Supersaturation of α-Al solid solution is prominently released by granular Al3Mg2 β phase during rapid solidification. Keyhole weld profile leads to parabolic-shaped distributions of alloying components and nonequilibrium β phase. Heat flow and solute elements are thermometallurgically accumulated in neck region, where maximum β phase and alloying element cluster are located. Asymmetrically, amount of Magnesium-rich β phase in the left portion of weld is the largest, dispersive β phase nearby weld center softening region is the lowest, where mechanical properties are worst, and diffusion-limited β phase in the right side is intermediate. There is significant discrepancy between left side, right side and center part of weld in solute redistribution and β/α eutectic phase transformation, which substantially contribute to obvious tensile properties fluctuation. Nucleation and growth of a few β phase particles in the dimple heterogeneously weaken weld integrity and are detrimental to weld strength and ductility. Weld specimens ductilely fracture in the center part, and plastically experience much deformation. Fracture surface morphologies show plenty of large and deep dimples after intense plastic deformation. Loss of strengthening elements and hydrogen-related porosity are attributed to evaporation-dependent weld pool instability. Additionally, the eutectic-driven microstructure analysis results are in consonance with mechanical behavior. The internal temperature development, molten pool duration, solid/liquid interface location, heat dissipation and weld quality should be appositely balanced by processing variables rearrangement.

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Progress of cavitation and acoustic streaming dynamics of liquid materials within ultrasonic field

Wu¹,

Zhai²,

Wang³

et al. 2022

Sci. Sin.-Tech.

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Study on the formation of welding, microstructure, and properties of 5A06 aluminum alloy by ultrasonic laser-assisted filler welding

Cited by 5 publications

References 1 publication

Study on Microstructure and Properties of Mechanical Vibration-Assisted MIG Welded Joint of Aluminium Alloy Car Body

Study on Microstructure and Properties of Mechanical Vibration-Assisted MIG Welded Joint of Aluminium Alloy Car Body

Weldability of Nickel/Aluminum Dissimilar Materials Laser Welding Part II: Microstructure Development, Solidification Behavior and Mechanical Properties of Polycrystalline Aluminum Alloy

Progress of cavitation and acoustic streaming dynamics of liquid materials within ultrasonic field

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