Progress and perspectives of joints defects of laser-arc hybrid welding: A review
Laser-arc hybrid welding (LAHW), being a high-efficiency with excellent properties of high
welding speed, deep penetration, and good bridging performance, has been paid close …
welding speed, deep penetration, and good bridging performance, has been paid close …
Formation and influence mechanism of keyhole-induced porosity in deep-penetration laser welding based on 3D transient modeling
F Lu, X Li, Z Li, X Tang, H Cui - International Journal of Heat and Mass …, 2015 - Elsevier
Keyhole-induced porosity occurring in deep-penetration laser welding is a large issue in
laser manufacturing large-thickness components. In order to improve understanding of the …
laser manufacturing large-thickness components. In order to improve understanding of the …
Factors affecting weld root morphology in laser keyhole welding
J Frostevarg - Optics and Lasers in Engineering, 2018 - Elsevier
Welding production efficiency is usually optimised if full penetration can be achieved in a
single pass. Techniques such as electron and laser beam welding offer deep high speed …
single pass. Techniques such as electron and laser beam welding offer deep high speed …
Study on the fiber laser/TIG weldability of AISI 304 and AISI 410 dissimilar weld
G Casalino, A Angelastro, P Perulli, C Casavola… - Journal of Manufacturing …, 2018 - Elsevier
In this study, AISI 304 and AISI 410 stainless steels were welded together by a fiber laser-
TIG hybrid welding system. Weldability was evaluated through the characterization of the …
TIG hybrid welding system. Weldability was evaluated through the characterization of the …
Keyhole-induced porosity in laser-arc hybrid welded aluminum
OT Ola, FE Doern - The International Journal of Advanced Manufacturing …, 2015 - Springer
Keyhole-induced macro-porosity, which results from the collapse of the keyhole that formed
by the reaction forces of metal vapors, is a major problem limiting laser and laser-arc hybrid …
by the reaction forces of metal vapors, is a major problem limiting laser and laser-arc hybrid …
[HTML][HTML] Keyhole-induced porosity in laser manufacturing processes: Formation mechanism and dependence on scan speed
RD Seidgazov, FK Mirzade - Chinese Journal of Mechanical Engineering …, 2022 - Elsevier
Laser welding and laser-based powder-bed fusion additive manufacturing in the deep
penetration (keyhole) mode are promising technologies for the synthesis of metal …
penetration (keyhole) mode are promising technologies for the synthesis of metal …
[PDF][PDF] Porosity in thick section alloy 690 welds–experiments, modeling, mechanism, and remedy
Laser and hybrid laserarc welding present significant opportunities for thick sec tion welding
of nickelbased alloys during the construction and repair of nuclear power plant components …
of nickelbased alloys during the construction and repair of nuclear power plant components …
Fusion weldability studies in aerospace AA7075-T651 using high-power continuous wave laser beam techniques
OT Ola, FE Doern - Materials & Design, 2015 - Elsevier
The weldability of AA7075-T651 during keyhole laser and laser–arc hybrid welding was
studied using microstructural and X-ray radiography techniques. The results showed that the …
studied using microstructural and X-ray radiography techniques. The results showed that the …
Toward accurate prediction of partial-penetration laser weld performance informed by three-dimensional characterization–Part I: high fidelity interrogation
The mechanical response of laser welds in complex load states can be highly variable,
underlying the need for models that can accurately predict mechanical behavior to ensure …
underlying the need for models that can accurately predict mechanical behavior to ensure …
Power and welding speed influence on bead quality for overlapped joint laser welding
LE dos Santos Paes, M Pereira… - Journal of Laser …, 2019 - pubs.aip.org
Laser welding has gained more and more industry acceptance due to narrow heat affected
zone, low distortion levels, possibility of remote processing, and outstanding welding speeds …
zone, low distortion levels, possibility of remote processing, and outstanding welding speeds …