Effects of Vibration on Microstructure and Thermal Properties of Friction Stir Spot Welded (FSSW) Aluminum Alloy (Al5083)
| Autor: | Mahmoud Abbasi, Behrouz Bagheri, Mohammad Kazem Besharati Givi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering Rotational speed 02 engineering and technology Welding Microstructure Industrial and Manufacturing Engineering Grain size law.invention Vibration 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering law Metallography Hardening (metallurgy) Electrical and Electronic Engineering Composite material Spot welding |
| Zdroj: | International Journal of Precision Engineering and Manufacturing. 20:1219-1227 |
| ISSN: | 2005-4602 2234-7593 |
| DOI: | 10.1007/s12541-019-00134-9 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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