Effects of Vibration on Microstructure and Thermal Properties of Friction Stir Spot Welded (FSSW) Aluminum Alloy (Al5083)

Friction stir spot welding (FSSW) is a solid state joining technique with a simple concept. A non-consumable rotating tool with a specially designed pin and shoulder are inserted into the sheets or plates to be joined. In this study, the effect of vibration on microstructure and thermal properties o...

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Bibliographic Details
Published inInternational journal of precision engineering and manufacturing Vol. 20; no. 7; pp. 1219 - 1227
Main Authors Bagheri, Behrouz, Abbasi, Mahmoud, Givi, Mohammad
Format Journal Article
LanguageEnglish
Published Seoul Korean Society for Precision Engineering 01.07.2019
Springer Nature B.V
Subjects
Aluminum base alloys
Computer simulation
Deformation
Engineering
Finite element method
Formability
Friction
Friction stir welding
Grain size
Industrial and Production Engineering
Materials Science
Metallography
Microstructure
Regular Paper
Spot welding
Thermodynamic properties
Vibration welding
Mechanical properties
Johnson–Cook hardening
Finite element analysis
Friction stir spot welding
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Summary:Friction stir spot welding (FSSW) is a solid state joining technique with a simple concept. A non-consumable rotating tool with a specially designed pin and shoulder are inserted into the sheets or plates to be joined. In this study, the effect of vibration on microstructure and thermal properties of Al5083 weldment made by FSSW using rotation speed of 1500 rpm and different dwelling times, namely 5 and 10 s, was investigated. This new method was entitled FSSVW (friction-stir-spot-vibration welding). The experimental and numerical results, obtained using Abaqus software, were compared. In this work, the Johnson–Cook hardening condition was used for modeling of deformable metals. The results showed good comparability between experimental and FEM data. Also, metallography analyses indicated that the grain size decreased and the temperature increased as FSSVW method was applied. The results showed that vibration during FSSW leads to grain size decrease of about 30–50% in the weld region.
ISSN:2234-7593
2005-4602
DOI:10.1007/s12541-019-00134-9