研究振荡振幅对异种材料 T 型接头振荡激光桩焊接过程中锁孔和熔池形态的影响

IF 1.7 4区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yuewei Ai, Jiabao Liu, Shibo Han
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引用次数: 0

摘要

激光焊接过程中的锁孔和熔池形态与焊缝成形过程密切相关,并进一步影响焊缝质量。为了研究振荡振幅对异种材料 T 型接头振荡激光桩焊接过程中键孔和熔池形态演变过程的影响,建立了一个三维多相流数值模型。详细计算并分析了不同振幅下异种材料 T 型接头的圆形振荡激光桩焊接过程。结果表明,在异种材料 T 型接头的圆弧形振荡激光桩焊接过程中,随着振荡振幅的增大,键孔深度减小,熔池宽度和界面焊缝宽度增大。焊接过程中会形成键孔的周期性膨胀和收缩。由于键孔的不稳定性,键孔的塌陷可能会在熔池中产生气泡,这些气泡随后也会被键孔捕获。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of influence of oscillation amplitude on keyhole and molten pool morphologies during oscillating laser stake welding of dissimilar materials T-joints
The morphologies of the keyhole and molten pool during the laser welding process are highly related to weld formation process, which affects the weld quality further. To investigate the influence of the oscillation amplitude on the morphology evolution processes of the keyhole and molten pool during the oscillating laser stake welding of dissimilar materials T-joints, a three-dimensional multiphase flow numerical model is developed. The circular shaped oscillating laser stake welding processes of dissimilar materials T-joints under different oscillation amplitudes are calculated and analyzed in detail. The results show that the depth of the keyhole decreases and the widths of the molten pool and weld at the interface increase with the increase in the oscillation amplitude during the circular shaped oscillating laser stake welding of dissimilar materials T-joints. The periodical expansion and contraction of the keyhole are formed during the welding process. The collapse of the keyhole may cause bubbles in the molten pool due to the instability of the keyhole, and these bubbles also can be captured by the keyhole later.
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来源期刊
CiteScore
3.60
自引率
9.50%
发文量
125
审稿时长
>12 weeks
期刊介绍: The Journal of Laser Applications (JLA) is the scientific platform of the Laser Institute of America (LIA) and is published in cooperation with AIP Publishing. The high-quality articles cover a broad range from fundamental and applied research and development to industrial applications. Therefore, JLA is a reflection of the state-of-R&D in photonic production, sensing and measurement as well as Laser safety. The following international and well known first-class scientists serve as allocated Editors in 9 new categories: High Precision Materials Processing with Ultrafast Lasers Laser Additive Manufacturing High Power Materials Processing with High Brightness Lasers Emerging Applications of Laser Technologies in High-performance/Multi-function Materials and Structures Surface Modification Lasers in Nanomanufacturing / Nanophotonics & Thin Film Technology Spectroscopy / Imaging / Diagnostics / Measurements Laser Systems and Markets Medical Applications & Safety Thermal Transportation Nanomaterials and Nanoprocessing Laser applications in Microelectronics.
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