The Joint Properties of 5754 Aluminium Alloy by Friction Stir Spot Welding

Abstract

In this study, AA5754 sheet samples joined by using a friction stir spot welding method using different rotational speed parameters has been analyzed experimentally. During the experiments, rotational speed of the tool was changed while other process parameters and the tool geometry were kept constant. The effect of tool rotational speed on the hardness values, macrostructure, and tensile properties of joints has been investigated and the results of the experiments show the best tensile shear strength and hardness values are obtained for the tool rotation speed of 1850 rpm. According to the macroscopic investigation, all of the fractured samples failed by nugget pullout and the fractured samples have only a single type fracture pattern.

Characterization of pulsed-tungsten inert gas (PTIG) welding on AA5754-H111 alloy: mechanical properties and microstructural analysis

“…All three precipitation-hardening alloys had similar grain sizes in their nugget zones after being cooled in water [21]. Macroscopic examination of the fractured samples showed that all of the failures were caused by nugget pull-out [22]. T-joints using friction stir welding (FSW) were developed by process optimization using poly methyl methacrylate (PMMA) and AA5754 alloy [23].…”

Optimization of Friction Stir Spot Welding Process Parameters on the Microstructure and Shear Load by Taguchi Method

“…Materials of lightweight such as aluminum, however, have apparent advantages more than steel with similar properties but the density is almost lowered three times, significant resistance of corrosion and high level of usage of 85-95%. Al alloys are promising applicants to replace equivalent steel assemblies and their use in automotive manufacturing has lately increased [1][2][3].…”

“…To join Al alloys, in 1991 TWI (Abington, UK) developed a new solid state joining method called FSSW. This newly method of joining is beneficial in the production of Al joints without porosity, contamination, cracks and holes [1].…”