Topic
Spot welding
About: Spot welding is a research topic. Over the lifetime, 12491 publications have been published within this topic receiving 89845 citations. The topic is also known as: Spot_welding.
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TL;DR: In this paper, the peak temperatures during friction stir spot welding of similar and dissimilar aluminium and magnesium alloys are investigated, and the peak temperature reached by Al 6111, Al 2024, and AZ91 are within 6% of their solidus temperatures.
Abstract: The peak temperatures during friction stir spot welding of similar and dissimilar aluminium and magnesium alloys are investigated. The peak temperatures attained during friction stir spot welding of Al 6111, Al 2024, and AZ91 are within 6% of their solidus temperatures. In dissimilar AZ91/Al 6111 spot welds the peak temperature corresponds with the α-Mg solid solution and Mg17Al12 eutectic temperature of 437°C. An a-Mg plus Mg17Al12 eutectic microstructure is produced in dissimilar friction stir spot welds when material displaced during pin penetration into the lower sheet material contacts the upper sheet material at the eutectic temperature.
122 citations
TL;DR: In this paper, a 3D finite element-based model of the plunge phase was developed using the commercial code ABAQUS to study the thermomechanical processes involved during the plunge stage.
121 citations
TL;DR: In this paper, the influence of the primary welding parameters affecting the heat input such as, weld peak current, on the weld quality such as; surface appearances, weld nugget size, weld penetration, weld internal discontinuities, strength and ductility was determined for 304L resistance spot welded materials.
121 citations
TL;DR: In this article, the mechanism of tool penetration during friction stir spot welding of Al-alloy and Mgalloy sheet materials is investigated and explained as a progression of wear events, from mild wear to severe wear and then to melt wear in material beneath the base of the rotating pin.
Abstract: The mechanism of tool penetration during friction stir spot welding of Al-alloy and Mg-alloy sheet materials is investigated and is explained as a progression of wear events, from mild wear to severe wear and then to melt wear in material beneath the base of the rotating pin. Melt wear can also occur under the rotating tool shoulder provided that sufficient penetration of the upper sheet occurs during the spot welding operation.
120 citations
TL;DR: In this paper, a nanoindentation hardness study was conducted on the tempered region and the base metal in a dual phase steel subjected to rapid thermal cycles of resistance spot welding.
118 citations