Vibration parameters optimum of 316L steel laser welding under high frequency micro-vibration condition

Zhang, Wei; Lu, Qinghua; Zhang, Peilei; Yan, Hua; Ren, Xinhuai; Bai, Yongzhen

doi:10.1088/2053-1591/aaf838

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Besides, an analysis of variance determined that frequency vibration is the most statistically significant factor. Wei et al 25 investigated the effect of vibration parameters on the mechanical and microstructure of high-frequency micro-vibration laser-welded 316L stainless steel. They found that the microstructure and mechanical behavior of the joint was significantly influenced by vibration acceleration and frequency.…”

Section: Introductionmentioning

confidence: 99%

Vibration-assisted laser welding: Frequency and amplitude vibration effect on the microhardness of A36 steel

Vidal

Barrionuevo

Ramos‐Grez

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Laser welding is one of the most versatile welding techniques for joining advanced materials. However, thermal cycles induced around weld lines generate residual stresses and inhomogeneous plastic deformation during the welding process. Vibratory weld conditioning is an alternative to enhance the mechanical properties of metal sheets during casting and welding. This study aims to analyze the effects of vibration on the microhardness of the resolidified melt zone after a laser weldment. Two 1 mm thick A36 steel sheets were welded in lap configuration using a CO2 laser, with varying vibration amplitudes up to 0.56 mm peak-to-peak and frequencies up to 1034 Hz. We confirmed that mechanical vibrations during the welding process alter the final properties of the joint compared to non-vibrated samples. Based on the experimental results, vibration can either increase or decrease the bead's final microhardness in a range of [−5%, 7%] by controlling the frequency and vibration amplitude. Furthermore, average microhardness was predicted by applying several machine learning regressors, showing an accuracy of ±3%, denoting the usefulness of the random forest and AdaBoost algorithms provide.

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Section: Introductionmentioning

confidence: 99%

Vibration-assisted laser welding: Frequency and amplitude vibration effect on the microhardness of A36 steel

Vidal

Barrionuevo

Ramos‐Grez

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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show abstract

“…However, the assembly requirement of the workpiece is high because the spot diameter of the laser beam is small. Laser filler wire welding was used to close the small gap of the sample and reduce the accuracy requirements for laser beam adjustment and sample alignment to solve these problems . Laser filler wire welding not only maintains the advantages of laser welding but also reduces gap tolerances and weld defects and improves solderability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vibration Frequency on Laser Filler Wire Welded Joints

Ren

Zhang

et al. 2019

steel research int.

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The effects of different vibration frequencies on the microstructure, residual stress, and fatigue life of welded joints are investigated using laser filler wire welding combined with mechanical vibration. The results show that the vibration frequency of 1055 Hz has a significant effect on the melting width of the laser welding with filler wire joint. The welds have three morphological features of columnar crystals, dendrites, and equiaxed crystals. In addition, the welds with 1055 Hz vibration frequency have the most equiaxed crystals and the highest hardness. The vibration frequency of 524 Hz increases the residual stress of the welded joint by 16%, whereas the vibration frequency of 1055 Hz reduces its residual stress by 8%. It can be shown by tensile experiments that the laser filler wire–welded joints have a higher tensile strength and greater elongation with increase in the vibration frequency. The fracture observation shows that the cleavage step appears in the crack propagation zone. Compared with the vibration frequency of 524 Hz, fatigue fracture at the 1055 Hz vibration has narrower fatigue striation spacing, lower crack growth rate, and higher fatigue life.

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Performance of Vibration-Assisted Laser Welded Joints Based on Orthogonal Experiment Design

Jin

Zhang

et al. 2021

J. of Materi Eng and Perform

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Vibration parameters optimum of 316L steel laser welding under high frequency micro-vibration condition

Cited by 4 publications

References 12 publications

Vibration-assisted laser welding: Frequency and amplitude vibration effect on the microhardness of A36 steel

Vibration-assisted laser welding: Frequency and amplitude vibration effect on the microhardness of A36 steel

Effect of Vibration Frequency on Laser Filler Wire Welded Joints

Performance of Vibration-Assisted Laser Welded Joints Based on Orthogonal Experiment Design

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