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Open AccessArticle

Investigation on the Effect of Tool Pin Profiles on Mechanical and Microstructural Properties of Friction Stir Butt and Scarf Welded Aluminium Alloy 6063

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Department of Mechanical Engineering, IMS Engineering College, National Highway 24, Ghaziabad 201009, India
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Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi 110025, India
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Department of Mechanical Engineering, Noida Institute of Engineering and Technology, Greater Noida, Uttar Pradesh 201306, India
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Princess Fatima Alnijris’s Research Chair for Advanced Manufacturing Technology, Advanced Manufacturing Institute, King Saud University, Riyadh-11421, Saudi Arabia
*
Authors to whom correspondence should be addressed.
Metals 2018, 8(1), 74; https://doi.org/10.3390/met8010074
Received: 14 December 2017 / Revised: 16 January 2018 / Accepted: 17 January 2018 / Published: 19 January 2018
(This article belongs to the Special Issue Science, Characterization and Technology of Joining and Welding)
In the present study, friction stir welding (FSW) of butt and scarf joints of Al 6063-T6 were investigated. Five different tool pin profiles (cylindrical, tapered cylindrical, square, triangular, and hexagonal) were applied for performing welding. Scarf joint, being a new joint configuration, was used and effect of pin profiles was investigated on this type of joint configuration. The effect of pin profiles on microstructure, micro-hardness, impact and tensile properties of friction stir welded Al 6063-T6 was investigated. Scanning electron and optical microscopy were employed to characterize the different zones of welded joints. A thorough discussion on correlation between mechanical properties and microstructure has been made. In addition, the formation of various defects during the FSW was discussed with the help of fractography of the fractured surfaces. View Full-Text
Keywords: friction stir welding; scarf joint; butt joint; tool pin profiles; mechanical properties; microstructure; metallurgy friction stir welding; scarf joint; butt joint; tool pin profiles; mechanical properties; microstructure; metallurgy
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Goel, P.; Siddiquee, A.N.; Khan, N.Z.; Hussain, M.A.; Khan, Z.A.; Abidi, M.H.; Al-Ahmari, A. Investigation on the Effect of Tool Pin Profiles on Mechanical and Microstructural Properties of Friction Stir Butt and Scarf Welded Aluminium Alloy 6063. Metals 2018, 8, 74.

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