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      https://www.ias.ac.in/article/fulltext/boms/034/07/1447-1453

    • Keywords

       

      AA5083; friction stir processing; ductility; superplasticity.

    • Abstract

       

      Commercial 5083 Al rolled plates were subjected to friction stir processing (FSP) with two different processing parameters, having 430 and 850 rpm tool rotational speed with a single traverse feed rate of 90 mm/min. These FSP conditions resulted in two fine grained microstructures of 0.95 𝜇m (430 rpm) and 2.6 𝜇m (850 rpm). Tensile elongations were measured at a relatively low temperature of 250°C at three strain rates, and demonstrated that a decrease in grain size resulted in significantly enhanced ductility and lower forming loads. The occurrence of a relatively high value of strain rate sensitivity, 𝑚 of 0.45 for a grain size of 0.95 𝜇m, suggests the operation of superplastic deformation under these present experimental conditions.

    • Author Affiliations

       

      Ehab A El-Danaf1 Magdy M El-Rayes1 Mahmoud S Soliman1

      1. Mechanical Engineering Department, Centre of Excellence for Research in Engineering Materials (CEREM), College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421
    • Dates

       
  • Bulletin of Materials Science | News

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