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http://dx.doi.org/10.7735/ksmte.2014.23.4.345

Mechanical Characteristic Evaluation by Spin Tool of Different Pin Shapes in Friction Stir Welding Al6061-T6  

Lim, ByungChul (Department of Mechanical and Automotive Engineering, Kongju National University)
Kim, DaeHwan (Department of Mechanical and Automotive Engineering, Kongju National University)
Park, SangHeup (Department of Mechanical and Automotive Engineering, Kongju National University)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.23, no.4, 2014 , pp. 345-349 More about this Journal
Abstract
In this study, an age-hardened 6061-T6 alloy sheet was used, which is commonly utilized for auto parts. The junction strength characteristics in relation to the stirring speed and welding speed were studied in accordance with the friction stir welding rotation of the tool pin. Micro hardness measurements of A type and B type pins, for a welding speed of 400 mm/min and a tool rotational speed 3000 rpm, were obtained as Hv104 and Hv111, respectively. For a welding speed of 200 mm/min and a tool rotational speed of 2000 rpm, we obtained Hv48 and Hv50 for A and B type pins, respectively. Microstructure observation showed that the stirring portion was fine and uniform, which occurred because of its plastic deformation. In the thermomechanically affected zone, partial recrystallization was present because of the plastic deformation. The crystal grains in the heat affected zone were coarsened due to the heat generated by friction stir welding.
Keywords
Al6061-T6; Friction Stir Welding; Tool pin; Mechanical; Characteristic;
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  • Reference
1 Min, T. K., 1992, Properties of Friction Welding Between the Back Metal of Bushing Part and Flange Part in A-Sn Alloy Metal Beaning, Doctorate Thesis, Dona-A University, Republic of Korea.
2 Liu, G., Murr, L. E., Niou, C., McClure, J. C., Vega., F. R., 1997, Microstructural Aspects of the Friction-Stir Welding of 6061-T6 Aluminum, Scripta materialia 37:3 355-361.   DOI   ScienceOn
3 Thomas, W. M., Nicholas, E. D., 1997, Friction stir welding for the transportation industries, J. Mat. Design. 18 269-273.   DOI   ScienceOn
4 Irving, B., 1993, Sparks Begin to Fly in Nonconventional Friction Welding and Surfacing, Welding Journal 72:5 37-40.
5 Murr, L. E., Liu, G., McClure, J. C., 1998, A TEM study of precipitation and related microstructures in friction-stir-welded 6061 aluminium, Journal of Materials Science 33:5 1243-1251.   DOI   ScienceOn
6 Lohwasser, D., 2000, Application of friction stir welding for aircraft industry, Proceeding of the second International symposium on Friction Stir Welding, Gothenburg, Sweden.