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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the influence of tool rotation rate on the microstructure, surface hardness, and tensile shear strength was examined, and it was concluded that the presence of the intermetallic compounds (Al2Cu and AlCu3) accompanied by material crushing increased the hardness of the SZ.
Abstract: In this study, the friction stir spot welding of Al/Cu composite produced by accumulative roll-bonding process was performed using a triangular pin with no features. The influence of tool rotation rate on the microstructure, surface hardness, and tensile shear strength was examined. The results indicated that the weld made at lower tool rotation rate was not bonded because there was no intermixing between the upper and lower sheets. The maximum shear failure load increased with the increasing tool rotation rate, and reached a maximum value at 1400 rpm, which can be ascribed to the increasing area and effective length (d) of stir zone (SZ). The experimental observations showed the presence of the intermetallic compounds (Al2Cu and AlCu3) in the SZ. It was concluded that the intermetallic compounds, accompanied by the material crushing, increased the hardness of the SZ.
40 citations
TL;DR: In this article, the effect of welding process parameters on the shear strength, tensile strength, nugget diameter and the observed failure mode was analyzed for galvannealed high strength interstitial free steel sheets of 1.6mm thickness.
39 citations
TL;DR: In this paper, an investigation has been conducted of the weldability of 0.2mm-thick sheet aluminum, brass, and copper in small-scale resistance spot welding using a high-frequency inverter and a capacitor-discharge power supply.
Abstract: An investigation has been conducted of the weldability of 0.2-mm-thick sheet aluminum, brass, and copper in small-scale resistance spot welding using a high-frequency inverter and a capacitor-discharge power supply. The results have been compared to those of previous investigations using a line-frequency alternating current power supply. The effects of electrode materials and process parameters on joint strength, nugget diameter, weld-metal expulsion and electrode-sheet sticking were studied. This work has also provided practical guidelines for selection of power supplies, process parameters (welding current/pulse energy, welding time/pulse width, electrode forces, etc.) and electrode materials for small-scale resistance spot welding of thin sheet aluminum, brass and copper.
39 citations
TL;DR: Wang et al. as discussed by the authors improved the weldability of dual-phase steel by adjusting the electrode force during spot welding process, and they showed that the width of weld lobe diagram can be nearly doubled.
39 citations
TL;DR: In this paper, the fatigue behavior of conventional FSSW and friction stir spot welding refilled by the friction forming process (FSSW-FFP) in aluminum 6061-T6 lap shear specimens was investigated based on the experimental observations.
39 citations