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Recent Developments in Friction Stir Welding
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 02, 1998 by SAE International in United States
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Friction stir welding (FSW) is a new welding process developed at The Welding Institute in Cambridge, U.K. This process uses a non-consumable rotating third body to generate frictional heat and create forging to facilitate continuous solid-state joints. In this paper, the current state of the art of FSW is discussed. A preliminary description of the process is provided, followed by the results of some relatively simple thermal modeling. The modeling results are used to provide a description of temperature distributions in FSW, as well as illustrate the effects of variations in process conditions. Representative microstructures of FSW on an Al 6061 alloy are then presented. Properties of these friction stir welds are then discussed and compared to those of both the base metal and to comparable GTAW welds. Some discussion is then given to the effects of section thickness on FSW. Examples are given of friction stir welds on aluminum alloys ranging from 2 to 30 mm in thickness. A brief description is then given of efforts to friction stir weld various other materials. Thermal stability of the tool is defined as a critical characteristic of the process. As a result, low melting temperature materials are generally readily friction stir-weldable; however, higher temperature materials generally cause degradation of the tool. Finally, a short discussion of future trends in FSW is given. With regard to aluminum, needs appear to be for greater productivity and flexibility. For other materials, however, development of better tool materials and improved thermal management are the key issues.
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CitationGould, J., Lienert, T., and Feng, Z., "Recent Developments in Friction Stir Welding," SAE Technical Paper 981875, 1998, https://doi.org/10.4271/981875.
SAE 1998 Transactions - Journal of Materials & Manufacturing
Number: V107-5 ; Published: 1999-09-15
Number: V107-5 ; Published: 1999-09-15
- Dawes, C. J. and Thomas, W. M. 1996. Friction stir process for aluminum alloys. Welding Journal, 75(3)41-45.
- Lienert, T. J. and Gould, J. E. 1998. Unpublished research. EWI.
- Dawes, C. J. and Thomas, W. M. 1995. Friction stir welding. 11th Annual North American Conference: Advances in Welding Technology, pp. 301-312.
- Gould, J. E. and Feng, Z. 1996. Unpublished Research. EWI.
- Vill, V. I. 1962. Friction Welding of Metals, American Welding Society, Miami, FL.
- Rosenthal, D. and Schemerber, R. 1938. Thermal study of arc welding. Welding Journal Research Supplement, 17(4)208s.
- Ditzel, P. 1997. Microstructural examinations of friction stir welds. Masters Thesis, The Ohio State University, Columbus., OH.
- Burch, W. L. 1958. The effect of welding speed on strength of 6061-T aluminum joints. Welding Journal Research Supplement, 37(10)361s-367s.
- Enjo, T. and Kuroda, T. 1982. Microstructure in weld heat affected zone of Al-Mg-Si alloy. Transactions of JWRI, 11(1):61-66.
- Dumolt, S. D. 1983. An investigation of the microstructural changes in the heat affected zone of age hardenable aluminum alloys using transmission electron microscopy. Ph.D. Dissertation, Carnegie Mellon University, Pittsburgh, PA.
- Nicholas, D. 1996. Private Communication, The Welding Institute, Cambridge, U.K.
- Lienert, T. J., Nagy, P. B., and Baeslack, W. A. III. 1998. Ultrasonic characterization of microstructures in inertia friction welds on SiC-reinforced 8009 aluminum. Welding Journal Research Supplement, 77(1)14s-28s.
- Lutts, A. 1961. Pre-precipitation in Al-Mg-Ge and Al-Mg-Si. Acta Metallurgica, 9(6):577-586.
- Shchegoleva, T. V. 1968. Ageing mechanism of the alloy Al-Mg-Si. The Physics of Metals and Metallography, 25(2):56-64.
- Dutta, I., and Allen, S. M. 1991. A calorimetric study of precipitation in commercial aluminum alloy 6061. Journal of Materials Science Letters, 10:323-326.