Results 1 to 10 of about 170,298 (228)

High-Power Fiber Laser Welding of High-Strength AA7075-T6 Aluminum Alloy Welds for Mechanical Properties Research. [PDF]

open access: yesMaterials (Basel), 2021
The results disclosed that both the microstructure and mechanical properties of AA7075-T6 laser welds are considerably influenced by the heat input. In comparison with high heat input (arc welding), a smaller weld fusion zone with a finer dendrite arm ...
El-Batahgy AM   +3 more
europepmc   +2 more sources

Autogenous Fiber Laser Welding of 316L Austenitic and 2304 Lean Duplex Stainless Steels. [PDF]

open access: yesMaterials (Basel), 2020
This study presents results of experimental tests on quality of dissimilar welded joints between 316L austenitic and 2304 lean duplex stainless steels, welded without ceramic backing.
Landowski M   +3 more
europepmc   +2 more sources

Laser Welding of Fiber and Quartz Glass Ferrule

open access: yesMicromachines, 2023
Optical fiber sensors fabricated by bonding have several limitations. To address these limitations, a CO2 laser welding process for an optical fiber and quartz glass ferrule is proposed in this study.
Wenhua Wang
doaj   +3 more sources

Experimental and numerical study of dissimilar fiber laser welding of martensitic AISI 1060 carbon steel with different configuration with austenitic 304 and ferritic 420 stainless steel. [PDF]

open access: yesHeliyon
Welding with fiber laser for two distinct stainless steel types was performed to join with the martensitic carbon steel (AISI 1060) in order to assess the effect of laser welding operating parameters for two dissimilar materials on the weld ...
Zarei A   +3 more
europepmc   +2 more sources

Multi-stage keyhole evolution in fiber laser welding: An experimental study and theoretical analysis

open access: yesResults in Physics, 2021
Laser welding with high beam intensity generates a metal vapor, which partially displaces the metal melt, forming a narrow keyhole-shaped fusion zone. This study conducted theoretical analysis of the keyhole formation processes within fiber laser welding,
Shihui Guo   +4 more
doaj   +3 more sources

Correlation between the spatters and evaporation vapor on the front keyhole wall during fiber laser keyhole welding

open access: yesJournal of Materials Research and Technology, 2020
Severe spattering is one of the common problems during fiber laser keyhole welding. In this study, the correlation between the spatter formation and laser-induced evaporation vapor on the front keyhole wall (FKW) was studied by changing the welding speed
Gaolei Zhang   +4 more
doaj   +3 more sources

Research on fiber laser welding formation, microstructure, and mechanical properties of 7.5 mm 304 stainless steel

open access: yesJournal of Materials Research and Technology, 2023
304 austenitic stainless steel with a thickness of 7.5 mm was welded by high-power fiber laser welding. The effects of main welding parameters, including laser power, welding speed, and defocusing amount, on weld formation were studied in detail.
Peikang Tao   +3 more
doaj   +2 more sources

A New Method to Assess Fiber Laser Welding Quality of Stainless Steel 304 Based on Machine Vision and Hidden Markov Models

open access: yesIEEE Access, 2020
High-power fiber laser welding has a broad range of applications in industrial processing and modern intelligent manufacturing, but how to assess the quality of laser welding has always been a concern. In the welding process, the geometric feature of the
Xin Tang   +7 more
doaj   +2 more sources

Robotic Nd:YAG Fiber Laser Welding of Ti-6Al-4V Alloy

open access: yesMetals, 2017
In the present study, Ti6Al4V titanium alloy plates were joined using a robotic fiber laser welding method. The laser welding process was carried out at two different welding speeds.
Ceyhun Köse, Engin Karaca
doaj   +3 more sources

Nanosecond pulsed fiber laser as a tool for laser micro welding

open access: yesProcedia CIRP, 2020
Abstract Laser micro welding is – due to its local and limited thermal input into the parts – a well suited joining technique for the contacting of battery cells, modules and packs for electrical vehicles. The most common laser micro welding processes employ a fiber laser emitting in the infra-red range in continuous wave mode.
A Olowinsky
exaly   +2 more sources

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