Results 11 to 20 of about 154,848 (294)
Journal of Materials Processing Technology, 2020 Brittle intermetallics are easily formed during welding of dissimilar metals in many alloy system such as Al-Ti, Al-Fe, and Ti-Ni, usually resulting in poor mechanical performance.
Huimin Wang +3 more
semanticscholar +3 more sources
Simulation and Experimental Comparison of Laser Impact Welding with a Plasma Pressure Model
Metals, 2019 In this study, spatial and temporal profiles of an Nd-YAG laser beam pressure pulse are experimentally characterized and fully captured for use in numerical simulations of laser impact welding (LIW). Both axisymmetric, Arbitrary Lagrangian-Eulerian (ALE)
Sepehr Sadeh +6 more
semanticscholar +3 more sources
Study on Microstructure and Stress Distribution of Laser-GTA Narrow Gap Welding Joint of Ti-6Al-4V Titanium Alloy in Medium Plate. [PDF]
Materials (Basel)Traditional narrow gap welding of thick titanium alloy plates easily produces dynamic molten pool flow instability, poor sidewall fusion, and excessive residual stress after welding, which leads to defects such as pores, cracks, and large welding ...
Cheng Z, Lang Q, Zhang Z, Song G, Liu L.
europepmc +2 more sources
Direct Glass-to-Metal Welding by Femtosecond Laser Pulse Bursts: I, Conditions for Successful Welding with a Gap. [PDF]
Nanomaterials (Basel)We report on the welding of optical borosilicate glass to an unpolished copper substrate (surface Ra of 0.27 µm and Rz of 1.89 µm) using bursts of femtosecond laser pulses.
Li Q, Matthäus G, Sohr D, Nolte S.
europepmc +2 more sources
Laser–Arc Welding Adaptive Model of Multi-Pre-Welding Condition Based on GA-BP Neural Network
MetalsIn large welding structures, maintaining a uniform assembly condition and machined dimension in the pre-welding groove is challenging. The assembly condition and machined dimension of the pre-welding groove significantly impact the selection of the ...
Zesheng Wu, Zhaodong Zhang, Gang Song
doaj +2 more sources
Influence of surface roughness on the transient interfacial phenomena in laser impact welding
Journal of Manufacturing Processes, 2022 Glenn Gleason +4 more
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Journal of Manufacturing Processes, 2022 Transient thermomechanical phenomena such as extreme plastic strains and temperature spikes that occur during laser impact welding are impractical to experimentally observe given the sub-microsecond duration of the joining process.
Glenn Gleason +3 more
semanticscholar +1 more source
Journal of Materials Research and Technology, 2023 In this work, a permanent connection of a high-nitrogen steel plate is achieved by using layer-by-layer powder-filled laser welding of high-nitrogen steel powder, and the stability levels of the welding process, microstructures and mechanical properties ...
Lei Wang +7 more
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, 2021 Introduced is a comprehensive numerical modeling framework that includes microstructure when simulating the laser impact welding (LIW) of metals to study the transient phenomena that occur during weld formation. Such transient phenomena include evolution
Sumair Sunny +3 more
semanticscholar +1 more source
Characterizations of welding mode transformation process during 1-μm and 10-μm laser welding
AIP 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