Topic
Electric resistance welding
About: Electric resistance welding is a research topic. Over the lifetime, 16761 publications have been published within this topic receiving 154851 citations.
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TL;DR: In this paper, the thermal histories and temperature distributions in a workpiece during a friction stir welding (FSW) process involving the butt joining of aluminum 6061-T6 were explored.
Abstract: This study aims to experimentally explore the thermal histories and temperature distributions in a workpiece during a friction stir welding (FSW) process involving the butt joining of aluminum 6061-T6. Different types of thermocouple layout are devised to measure the temperature histories during FSW at different locations on the workpiece in the welding direction. Successful welding processes are achieved by appropriately controlling the maximum temperatures during the welding process. Regression analyses by the least squares method are used to predict the temperatures at the joint line. A second-order polynomial curve is found to best fit the experimental temperature values in the width direction of the workpiece. The Vickers hardness test is conducted on the welds to evaluate the hardness distribution in the thermal-mechanical affected zone, the heat affected zone, and the base metal zone. Tensile tests are also carried out, and the tensile strength of the welded product is compared with that of the base metal.
140 citations
TL;DR: In this paper, the possibility of assembling through welding is one of the major features of thermoplastic composites and it positively contributes to their cost-effectiveness in manufacturing, and it is shown that welding is a useful technique for composites.
Abstract: The possibility of assembling through welding is one of the major features of thermoplastic composites and it positively contributes to their cost-effectiveness in manufacturing. This article prese...
140 citations
TL;DR: In this paper, thin aluminium alloy 2024-T3 and 6082-T6 sheets, 0.8mm thick, have been welded in the rolling direction by friction stir welding (FSW).
140 citations
TL;DR: In this paper, the advantages and disadvantages of various joining processes are discussed with respect to weld-parent material microstructure and the mechanical properties of the bond. Recommendations are subsequently made as to the most appropriate method for bonding aluminium-based MMCs.
Abstract: Metal matrix composites (MMCs) are becoming more popular as structural materials, and joining them is, therefore, of paramount importance. As these new materials become available, it is necessary to define and optimise joining techniques, and a thorough understanding of each process is required. A number of joining processes have been addressed, namely: fusion welding (tungsten and metal inert gas welding, electron and laser beam welding, resistance, capacitor discharge, and plasma welding), solid state bonding (diffusion bonding, friction and magnetically impelled arc butt welding), brazing, and adhesive bonding. The advantages and disadvantages of each technique are discussed with respect to weld-parent material microstructure and the mechanical properties of the bond. Recommendations are subsequently made as to the most appropriate method for bonding aluminium based MMCs.
139 citations
TL;DR: In this article, the effect of different beam scanning patterns on the microstructure and mechanical properties of Ti-6Al-4V alloy joints by electron beam welding was investigated, and the results showed that the weld metal is full of cross-cross acicular α′ martensitic structure, while the base metal is of equiaxed structure.
138 citations