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2012 | 3 | nr 3 | 86--91
Tytuł artykułu

What if They are not Weld-Able?

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Many light metals, such as aluminum and magnesium alloys, are promised to provide significant weight reduction for automobiles. However, the difficulties in welding these metals seriously hinder their large-scale applications. A new, hybrid mechanical joining process is proposed to avoid the inherited metallurgical complications in welding. By spinning and pressing a solid rivet into the metals, a joint is formed with the locking from the rivet, a stirred/mixed zone around the rivet, and solid bonding at the faying interface. This riveting process combines the actions of friction-stir welding in which metals of difierent sheets are mechanically mixed, and self-piercing riveting process which embeds a rivet in the sheets. Experiments have shown that such a friction-stir riveting process can produce joints of comparable strength to those created by other joining means, and can be applied to dififcult-to-weld metals and dissimilar metals, such as aluminum-to-aluminum, magnesium-to-magnesium, and aluminum-to-magnesium.(original abstract)
Opis fizyczny
  • The University of Toledo, Toledo, USA
  • The University of Toledo, Toledo, USA
  • The University of Toledo, Toledo, USA
  • The University of Toledo, Toledo, USA
  • Stiffiness Relevance and Strength Relevance in Crash of Car Body Components, a report for the European Aluminium Association by the University of Aachen (Germany), Public version of oficial report 83440, May 2010.
  • Wang B., Hao C., Zhang J., Zhang H., A New Self-piercing Riveting Process and the Joint Strength, Journal of Manufacturing Science and Engineering, May 2006, Vol. 128, Iss. 2, pp. 580-587, 2005.
  • Luo H., Hao C., Zhang J., Chen H., Gan Z., Zhang H., Characteristics of Resistance Welding Magnesium Alloys AZ31 and AZ91, Welding Journal, 90, 249-257, Dec. 2011.
  • Zhang H., Wang B., Gan Z., Self-piercing Riveting Al Alloys, 6th International Conference on Advances in Production Engineering (APE'10), 17-19 June 2010, Warsaw, Poland. Conf. Proc., pp. 255-263, 2010.
  • Magnesium Vision 2020, A North American Automotive Strategic Vision for Magnesium, United States Automotive Materials Partnership, 2006.
  • A Device and Process of Friction-stir Riveting, Inventors: C.Y. Hao, J.S. Zhang, H. Luo, Z.L. Li, X.F. Mao, and H. Zhang, Chinese Patent
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