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Characteristics of Dissimilar Friction Stir Welded Joints of Selected Aluminium Alloys

Author: Krzysztof Mroczka, Pedagogical University of Cracow; Adam Pietras, Institute of Welding   |   Document Download   |   Product code: ZCP2012MST0308

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Classified as: Additive Manufacturing Aluminum ...more

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This paper will present the results of the investigation of the following Friction Stir Welded (FSW) joints: AlSi9Mg/2017A and AlSi9Mg/6082, where AlSi9Mg is the casting aluminium alloy, while the 2017A and 6082 are wrought (rolled) aluminium alloys precipitation strengthened. FSW butt joints were made using a cylindrical and conical pin-tool with thread on the surface with the linear velocity exceeding 1 m/min. A solution in which FSW pin-tool rotates at a different speed than the speed of the tool shoulder was also applied. The studies show the microstructure of joints and the differences resulting from the use of different welding conditions and parameters. The ageing process of 2017A/AlSi9Mg weld revealed the lack of stability of the microstructure immediately after the welding process - hardening of materials with time and after artificial ageing. The study of the 6082/AlSi9Mg weld showed smaller difference in hardness between crown-side and the middle of the weld. This weld was created applying two speed of the rotation tool.
  • From: MS&T 2012, Materials Science & Technology 2012 Conference and Exhibition (MS&T Partner Societies)
  • Publisher: MS&T Partner Societies
  • Published: October 01, 2012
  • Pages: 8