Results 11 to 20 of about 8,453 (225)

Numerical Simulation and Experimental Verification of Laser Multi-Section Welding

open access: yesChinese Journal of Mechanical Engineering, 2022
To address the problems of large welding deformation and splashing in the resistance spot welding of the lubricating oil cooler plate, the laser spot welding was employed, instead of the resistance spot welding, and a novel laser spot welding was ...
Jia Liu   +4 more
doaj   +1 more source

Weld Formation, Microstructure Evolution and Mechanical Property of Laser-Arc Hybrid Welded AZ31B Magnesium Alloy

open access: yesMetals, 2022
Laser-arc hybrid welding of AZ31B magnesium alloy was carried out in this paper, and the effects of welding parameters (laser power, welding speed, welding current) on weld formation, microstructure evolution and mechanical property were studied.
Sibo Wang, Chunyan Yan, Zhengjia Gu
doaj   +1 more source

Metallurgical Model of Diffusible Hydrogen and Non-Metallic Slag Inclusions in Underwater Wet Welding of High-Strength Steel

open access: yesMetals, 2020
High susceptibility to cold cracking induced by diffusible hydrogen and hydrogen embrittlement are major obstacles to greater utilization of underwater wet welding for high-strength steels. The aim of the research was to develop gas–slag systems for flux-
Sergey G. Parshin   +2 more
doaj   +1 more source

Enhancing mechanical properties of wire + arc additively manufactured INCONEL 718 superalloy through in-process thermomechanical processing

open access: yesMaterials & Design, 2018
Wire + arc additive manufacture (WAAM) was applied to produce INCONEL 718 superalloy (IN718) components in a layer by layer manner; further, interpass cold rolling was introduced to generate in-process thermomechanical processing effect during the ...
Xiangfang Xu   +4 more
doaj   +1 more source

Characterizations of welding mode transformation process during 1-μm and 10-μm laser welding

open access: yesAIP Advances, 2020
To reveal the enhancing energy coupling effect of plasma, a comparison of the welding mode transformation process during 1-µm and 10-µm laser welding of aluminum alloys is carried out through experimental observation and theoretical analysis.
S. H. Guo, J. L. Zou, R. S. Xiao
doaj   +1 more source

Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging

open access: yesHeliyon, 2023
There are many problems in the arc welding repair of aluminum alloy parts, such as excessive pores, coarse grains, and low hardness. Introducing external energy excitation is an effective solution.
Zhichao Chen   +5 more
doaj   +1 more source

Laser Welding under Vacuum: A Review

open access: yesApplied Sciences, 2017
Laser welding has been widely used in various industry fields. In order to further alter and broaden its applicability, a novel technology of laser welding under vacuum is introduced.
Meng Jiang, Wang Tao, Yanbin Chen
doaj   +1 more source

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   +1 more source

Research progress of laser welding process dynamic monitoring technology based on plasma characteristics signal

open access: yesJournal of Hebei University of Science and Technology, 2017
During the high-power laser welding process, plasmas are induced by the evaporation of metal under laser radiation, which can affect the coupling of laser energy and the workpiece, and ultimately impact on the reliability of laser welding quality and ...
Teng WANG, Juequan CHEN, Xiaoli JIN
doaj   +1 more source

Effects of Sc on laser hot-wire welding performance of 7075 aluminum alloy

open access: yesMaterials Research Express, 2020
In order to clarify the effects of Sc modification on laser hot-wire welding performance of 7075 high strength aluminum alloys, the changing rules of weld formation, microstructure, element loss, mechanical performances and pores of weld joints were ...
Shichun Li   +5 more
doaj   +1 more source

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