International journal of advanced smart convergence

  • 제4권1호
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  • Pages.145-153
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  • 2015
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  • 2288-2847(pISSN)
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  • 2288-2855(eISSN)
한국인터넷방송통신학회 (The Institute of Internet, Broadcasting and Communication)
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Friction Stir Welding Tool Geometries Affecting Tensile Strength of AA6063-T1 Aluminum Alloy Butt Joint

  • Kimapong, Kittipong (Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi) ;
  • Kaewwichit, Jesada (Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi) ;
  • Roybang, Waraporn (Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi) ;
  • Poonnayom, Pramote (Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi) ;
  • Chantasri, Sakchai (Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi)
  • 투고 : 2015.02.15
  • 심사 : 2015.04.16
  • 발행 : 2015.05.30
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초록

Friction Stir Welding (FSW) is a solid state welding that could successfully weld the difficult-to-weldmaterials such as an aluminum alloy. In this welding process, the stirrer of the welding tool is one of the important factors for producing the perfect sound joint that indicates the higher joint strength. So, this report aims to apply the friction stir welding using various stirrer geometries to weld the AA6063-T1 aluminum alloy butt joint, investigates the mechanical properties of the joint and then compares the mechanical properties with the microstructure of the joint. An experiment was started by applying the friction stir welding process to weld a 6.3 mm thickness of AA6063-T1 aluminum alloy butt joint. A study of the stirrer geometries effect such as a cylindrical geometry, a cone geometry, a left screw geometry and a right screw geometry at a rotational speed of 2000 rpm and a welding speed of 50-200 mm/min was performed. The mechanical properties such as a tensile strength and a hardness of the joint were also investigated and compared with the microstructure of the joint. The results are as follows. A variation of FSW Stirrer shape directly affected the quality AA6063-T1 aluminum alloy butt joint. A cylindrical stirrer shape and a cone stirrer shape produced the void defect at the bottom part of the weld metal and initiated the failure of the joint when the joint was subjected to the load during the tensile test. Left and right screw stirrer shapes gave the sound joint with no void defect in the weld metal and affected to increase the joint strength that was higher than that of the aluminum base metal.

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참고문헌

  1. Thomas, W.M., Nicholas, E.D., Needham, J.C., Murch, M.G., Templesmith, P. and Dawes, C.J, Friction Stir Welding, G.B. Patent Application, No. 9125978.8, 1991, UK.
  2. Thomas, W.M. and Nicholas, E.D, "Friction Stir Welding for the Transportation Industries," Materials and Design, Vol. 18, pp. 269-273, 1997, UK. https://doi.org/10.1016/S0261-3069(97)00062-9
  3. Lee, W.B., Yeon, Y.M. and Jung, S.B, "The Improvement of Mechanical Properties of Friction-stirwelded A356 Al Alloy," Materials Science and Engineering : A, Vol. 355, pp. 154-159, 2003. https://doi.org/10.1016/S0921-5093(03)00053-4
  4. Lie, H.J., Fujii, H., Maeda, M. and Nogi, K, "Tensile Properties and Fracture Locations of Friction Stir Welding Joints of 2017-T351 Aluminum Alloy," Journal of Materials Processing Technology, Vol. 142, pp. 692-696, 2003. https://doi.org/10.1016/S0924-0136(03)00806-9
  5. Peel, M., Steuwer, A., Preuss, M. and Withers, O.J, "Microstructure, Mechanical Proper-ties and Residual Stresses as a Function of Welding Speed in Aluminum AA5083 Friction Stir Welds," Acta Materialia, Vol. 51, pp. 4791-4801, 2003. https://doi.org/10.1016/S1359-6454(03)00319-7
  6. Ericsson, E. and Sandstrom, A, "Influence of Welding Speed on the Fatigue of Friction Stir Welds and Comparison with MIG and TIG," International Journal of Fatigue, Vol. 25, pp. 1379-1387, 2003. https://doi.org/10.1016/S0142-1123(03)00059-8
  7. Jata, K.V. and Semiatin, S.L, "Continuous Dynamic Recrystallization during Friction Stir Welding of High Strength Aluminum Alloys," Scripta Mater, Vol. 43, pp. 743-749, 2000. https://doi.org/10.1016/S1359-6462(00)00480-2
  8. Sato, Y., Kokawa, H., Enomoto, M., and Jogan, S, "Microstructural Evolution of 6063 Aluminum during Friction Stir Welding," Metallurgical and Materials Transactions A, Vol. 30, pp. 2429-2437, 1999. https://doi.org/10.1007/s11661-999-0251-1
  9. Sato, Y. and Kokawa, H, "Distribution of Tensile Property and Microstructure in Friction Stir Welds of 6063 Aluminum," Metallurgical and Materials Transactions A, Vol. 32, pp. 3023-3031, 2001. https://doi.org/10.1007/s11661-001-0177-8
  10. Li, Y., Murr, L.E. and McClure, J.C, "Flow Visualization and Residual Microstructure associated with the Friction-stir Welding of 2024 Aluminum and 6061 Aluminum," Materials Science and Engineering: A, Vol. 271, pp. 213-223, 1999. https://doi.org/10.1016/S0921-5093(99)00204-X
  11. Prado, R.A., Murr, L.E., Shindo, D.J. and Soto, K.F, "Tool Wear in Friction-stir Welding of Aluminum Alloy 6061+20% $Al_2O_3$: A Preliminary Study," Scripta Materialia, Vol. 45, pp. 75-80, 2001. https://doi.org/10.1016/S1359-6462(01)00994-0
  12. Boz, M. and Kurt, A, "The Influence of Stirrer Geometry on Bonding and Mechanical Properties in Friction Stir Welding Process," Materials & Design, Vol. 25, pp. 343-347, 2004. https://doi.org/10.1016/j.matdes.2003.11.005
  13. Zhao, Y. Lin, S., Wu, L. and Qu, F, "The Influence of Pin Geometry on Bonding and Mechanical Properties in Friction Stir Weld 2014 Al Alloy," Mat. Letters, Vol. 59, pp. 2948-2952, 2005. https://doi.org/10.1016/j.matlet.2005.04.048
  14. Donnetngam, B., Wattanasriyakul, S, "Friction Stir Welding of AA6063-T6 using Square and Cirrular Pin end Welding Tool," IE Network Conference 2007, Thai.
  15. Mishra, R.S. and Ma, Z.Y, "Friction Stir Welding and Processing," Materials Science and Engineering: R: Reports, Vol. 50, pp. 1-78, 2005. https://doi.org/10.1016/j.mser.2005.07.001
  16. www.metallography.com/grain.htm, January 15, 2008.