Abstract
In recent years Gas Metal Arc Welding (GMAW) technology has expanded its functionalities in various areas which have further motivated its usage in several emerging manufacturing industries. There are several issues and challenges associated with this technology, especially in dissimilar metal welding (DMW). One of the predominant challenges is selecting appropriate welding parameters which influence the efficiency of this technology. To explore several modern advancements in this expertise, this paper has done an exclusive survey on various standards of GMAW and its variants for selecting suitable parameters for welding dissimilar nonferrous metals. This review summarizes various experimental and numerical results along with related illustrations to highlight the feasibility of welding dissimilar nonferrous metals using traditional GMAW and investigations on advanced GMAW processes such as cold metal transfer (CMT) and pulsed GMAW (P-GMAW). Simulation and modeling of nonferrous DMW have identified several research gaps and modeling problems. Researchers and manufacturers can use this review as a guideline to choose appropriate welding parameters to implement GMAW and its variants for non-ferrous dissimilar welding. It found that by controlling the heat input and effective post-heat treatments, adequate joint properties can be achieved. Automated large -scale manufacturing will widen the utilization scope of GMAW and avoid some costly methods such as laser welding, ultrasonic welding, and friction stir welding etc.
Highlights
This paper examines recent advances in numerical techniques for welding non-ferrous dissimilar metal welding (DMW) by arc welding, covering the welding processes and the microstructure as well as properties of the resultant joints
Fluid flow, and species distribution in the welding process of dissimilar aluminum alloys have been studied in the numerical finite volume model (FVM)
Selecting the welding parameters is considered a critical task in DMW welding processes
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. GMAW is a widely used process for welding both similar and dissimilar metals. Brazing stands in a queue followed by the welding process for DMW especially for non-ferrous metals. The actual experimental welding process and physical testing will be extensive, laborious as well as horrendously overpriced Because of this problem, the welding method necessitates the employment of advanced computational and modeling tools. The detailed analysis of either the GMAW process or the characteristics of the welded joints can produce results that have advanced significantly. This paper examines recent advances in numerical techniques for welding non-ferrous DMW by arc welding, covering the welding processes and the microstructure as well as properties of the resultant joints. Computational models that replicate the welding process and optimize the operating conditions have been extensively utilized over the past two decades. Hexahedral elements are superior to linear and quadratic tetrahedral elements [26,27]
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