Journal ArticleDOI
Numerical and experimental study of thermally induced residual stress in the hybrid laser–GMA welding process
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In this article, a model based on a double-ellipsoidal volume heat source to simulate the gas metal arc welding (GMAW) heat input was developed to predict the temperature field and thermally induced residual stress in the hybrid laser-gas arc welding process, and it was found that an increase in welding speed can reduce the residual stress concentration in the as-weld specimen.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2011-06-01. It has received 134 citations till now. The article focuses on the topics: Heat-affected zone & Welding.read more
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Superior tensile properties of 1%C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting
Jeong Min Park,Jungho Choe,Jung Gi Kim,Jae Wung Bae,Jongun Moon,Sangsun Yang,Kyung Tae Kim,Ji-Hun Yu,Hyoung Seop Kim +8 more
TL;DR: In this article, CoCrFeMnNi high-entropy alloys containing 1% carbon (C-HEAs) were additively manufactured using selective laser melting (SLM).
Journal ArticleDOI
Hybrid laser arc welding: State-of-art review
TL;DR: The synergic effects of laser beam and eclectic arc in the same weld pool results in an increase of welding speed and penetration depth along with the enhancement of gap bridging capability and process stability.
Journal ArticleDOI
Experimental and numerical investigation of temperature distribution and melt pool geometry during pulsed laser welding of Ti6Al4V alloy
TL;DR: In this article, a numerical and experimental investigation of laser welding of titanium alloy (Ti6Al4V) for modeling the temperature distribution to predict the heat affected zone (HAZ), depth and width of the molten pool.
Journal ArticleDOI
Numerical simulation and experimental validation of residual stress and welding distortion induced by laser-based welding processes of thin structural steel plates in butt joint configuration
TL;DR: In this article, the results of three different laser-based welding processes including aspects of Autogenous Laser Welding (ALW), Cold Wire assisted laser welding (CWLAW), and Hybrid Laser-Arc Welding were compared with traditional submerged arc welding (SAW) from both predicted and experimental perspectives.
Journal ArticleDOI
Heat Source Models in Numerical Simulations of Laser Welding.
TL;DR: New possibilities for modifying heat source models in numerical simulations of laser welding processes conducted using VisualWeld (SYSWELD) software are presented.
References
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Journal ArticleDOI
A new finite element model for welding heat sources
TL;DR: In this article, a double ellipsoidal geometry is proposed to model both shallow penetration arc welding processes and the deeper penetration laser and electron beam processes, which can be easily changed to handle non-axisymmetric cases such as strip electrodes or dissimilar metal joining.
Journal ArticleDOI
Modeling of transport phenomena in hybrid laser-MIG keyhole welding
Jia Zhou,Hai-Lung Tsai +1 more
TL;DR: In this paper, the authors investigated the complicated transport phenomena in spot hybrid laser-MIG keyhole welding and found that weld pool dynamics, cooling rate, and final weld bead geometry are strongly affected by the impingement process of the droplets in hybrid laser MIG welding.
Journal ArticleDOI
Mechanism and possible solution for transverse solidification cracking in laser welding of high strength aluminium alloys
B. Hu,Ian Richardson +1 more
TL;DR: In this article, a large number of transverse cracks were found in the weld fusion zone in laser and hybrid laser/arc welding of high strength aluminium alloys, and it was found that the cracking is related to the elongated temperature distribution in the welding direction.
Journal ArticleDOI
Microstructures and properties of laser/arc hybrid welds and autogenous laser welds in pipeline steels
TL;DR: In this article, six carbon-manganese, mainly pipeline, steels were welded using both autogenous Nd:YAG laser welding, and nd: YAG laser/MAG hybrid welding.
Book
Laser-Arc Processes and Their Applications in Welding and Material Treatment
Peter Seyffarth,Igor Krivtsun +1 more
TL;DR: In this paper, the development of the Combined Laser-Arc Process for Joining and Treatment of Materials (Survey) is described, as well as the combined discharge process.