Topic
Gas metal arc welding
About: Gas metal arc welding is a research topic. Over the lifetime, 11706 publications have been published within this topic receiving 109555 citations. The topic is also known as: metal active gas welding & GMAW.
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TL;DR: In this article, an attempt has been made to study the effect of pulsed current Gas Tungsten Arc (GTA) welding parameters on corrosion behavior of Ti-6Al-4V titanium alloy.
48 citations
TL;DR: In this paper, the effect of weld filler metal austenite to acicular ferrite transformation temperature on the residual stresses that arise during the gas metal arc welding of a low carbon steel has been examined using a finite element model.
Abstract: The effect of weld filler metal austenite to acicular ferrite transformation temperature on the residual stresses that arise during the gas metal arc welding of a low carbon steel has been examined using a finite element model. It was found that the stress levels in the weld can be tailored by the appropriate selection of the filler metal and compressive, near zero or tensile residual stresses produced. Reasonable agreement was obtained between the model and the stresses measured using neutron diffraction both in welds using conventional and low transformation temperature filler metal.
48 citations
TL;DR: In this article, the authors showed that dissimilar currents at lead and trail wires induce stability in the welding arcs, resulting in a considerable influence on weld microstructures, hardness, heat affected zone, and weld penetration-width ratio.
48 citations
01 Apr 1989-Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science
TL;DR: In this paper, the emission spectra of the plasma during pulsed laser welding of AISI 201 stainless steel under various welding conditions were derived from various locations in the plasma plume.
Abstract: The rates of vaporization of alloying elements from the weld pool were related to the emission spectra of the plasma during pulsed laser welding of AISI 201 stainless steel under various welding conditions. The temperature distribution in the plasma was determined from the spectra obtained from various locations in the plasma plume. The extent of ionization of the plasma was calculated from the electron temperatures To understand the role of surface active elements, emission spectra and the vaporization rate of iron that resulted from the welding of ultrapure iron samples were compared with those from the welding of oxidized samples or samples that were doped with sulfur or oxygen.
48 citations
Patent•
24 Jul 1992
TL;DR: In this paper, a collector electrode and adjacent electric weld torch are placed at a selected distance from a work surface or substrate to generate an electric welding current, which forms a welding current arc between the collector and the weld torch.
Abstract: A collector electrode and adjacent electric weld torch are placed at a selected distance from a work surface or substrate. An electric welding current is generated so that a welding current arc forms between the collector electrode and the weld torch. A feed metal is then fed into the welding current arc and is melted into molten metal adjacent to the collector electrode. The molten metal is then deposited onto a work surface. The collector electrode and weld torch are positioned so that the welding current arc between the weld torch and the collector electrodes does not penetrate the work surface or the already-deposited metal.
48 citations