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

• Main Authors: Orhan Dedeoğlu, Hande Güler Özgül
• Format: Article
• Language: English
• Published: MDPI AG 2019-01-01
• Series: Journal of Manufacturing and Materials Processing
• Subjects: aluminum alloys; friction stir spot welding; macrostructure; mechanical properties
• Online Access: http://www.mdpi.com/2504-4494/3/1/8

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.