Results 11 to 20 of about 30,206 (259)

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

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 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

Vacuum brazing of titanium alloy to stainless steel enhance by fiber laser surface texturing

open access: yesJournal of Mechanical Engineering and Sciences, 2021
A method for improving the brazing joining strength of Titanium alloy/Stainless steel fabricated through fibre laser surface texturing is introduced because it is a simple process that does not require the fabrication of complicated ...
A.J. Sulaiman H   +5 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

A Study on the Influences of Welding Position on the Keyhole and Molten Pool Behavior in Laser Welding of a Titanium Alloy

open access: yesMetals, 2019
Various welding positions need be used in laser welding of structures with complex configurations. Therefore, it is necessary to gain knowledge of how the welding positions can influence the keyhole and weld pool behavior in order to better control the ...
Baohua Chang   +5 more
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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