Topic
Arc welding
About: Arc welding is a research topic. Over the lifetime, 25393 publications have been published within this topic receiving 168182 citations.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, the effects of welding process parameters on weld bead penetration for the gas metal arc welding (GMAW) process were investigated and the experimental results showed that welding bead penetration increased as wire diameter, arc current and welding voltage increased.
Abstract: This paper presents the effects of welding process parameters on weld bead penetration for the gas metal arc welding (GMAW) process. Welding process parameters included wire diameter, gas flow rate, welding speed, arc current and welding voltage. The experimental results have shown that weld bead penetration increased as wire diameter, arc current and welding voltage increased, whereas an increase in welding speed was found to decrease the weld bead penetration. However, the weld bead penetration is not affected significantly by gas flow rate changes. Mathematical equations for study of the relationship between welding process parameters and weld bead penetration have also been computed by employing a standard statistical package program, SAS.
36 citations
••
TL;DR: In this article, the authors investigated the joining mechanism of TiAl3 precipitations in the weld metal owing to metallurgical reactions of Al with dissolved Ti. Formations of precipitation and Ti/Al interface were discussed in detail.
Abstract: Butt joining of titanium alloy Ti–2Al–Mn to aluminum 1060 using AlSi5 filler wire was conducted using pulsed gas metal arc welding. Joining mechanism of Ti–2Al–Mn/Al 1060 dissimilar joint with different welding heat input was investigated. Formations of precipitation and Ti/Al interface were discussed in detail. Fusion zone near aluminum is composed of α-Al dendrites and Al–Si hypoeutectic structures. A few TiAl3 precipitations appear in the weld metal owing to metallurgical reactions of Al with dissolved Ti. When the welding heat input was in the range of 1.87–2.10 kJ/cm, titanium alloy Ti–2Al–Mn and Al 1060 were joined together by the formation of a complex Ti/Al interface. With a low welding heat input, a serrate TiAl3 interfacial reaction layer was formed near Ti/Al interface. With the increasing of the welding heat input, α-Ti, Ti7Al5Si12, and TiAl3 layers were formed orderly from Ti–2Al–Mn to weld metal.
36 citations
••
TL;DR: In this paper, the fusion zone microstructure and mechanical properties of UNS S32750 joints obtained from gas tungsten arc (GTA), GMA and flux cored arc (FCA) welding processes were investigated.
36 citations
••
TL;DR: In this paper, the weldability of Inconel 718 using the metal inert gas (MIG) welding process called "cold metal transfer" was investigated and no defect has been detected and a lower level of residual stresses has been introduced in metal compared to classic MIG.
Abstract: This work investigates the weldability of Inconel 718 using the metal inert gas (MIG) welding process called ‘cold metal transfer’. This arc welding process is reported for working with a lower heat input compared to other arc processes. The consequences are less base metal impaired, low deformation and low residual stress level in assembly. In order to check these abilities, metallographic, texture, chemical and residual stress analyses have been carried out. Results show that MIG cold metal transfer has good properties for the welding of Inconel 718 inasmuch as no defect has been detected and a lower level of residual stresses has been introduced in metal compared to classic MIG.
36 citations