The effect of welding speed on the microstructure and mechanical properties of dissimilar aluminum alloys joined by friction stir welding

YENİ Ç. E., SAYER S., Ertǔrul O.

International Conference on Advances in Welding Science and Technology for Construction, Energy and Transportation, AWST 2010, held in Conjunction with the 63rd Annual Assembly of the International Institute of Welding, IIW 2010, İstanbul, Türkiye, 11 - 17 Temmuz 2010, ss.501-505 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.501-505
  • Anahtar Kelimeler: Aluminum alloys 2014-5083, Dissimilar joint, Friction stir welding (fsw), Mechanical properties, Microstructure, Welding speed
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

In this study, dissimilar Aluminum Alloys (AA) 2014 and 5083 have been friction stir welded by using a constant rotation speed of 1600 rpm and three different welding speeds. The aim is to determine the optimum welding speed for such a dissimilar joint. Temperature measurements, microstructural examination, hardness measurements and room temperature tensile tests have been carried out in order to determine the optimum combination. For all welding speeds, a fine-equiaxed grain structure is obtained in the nugget zone with similar grain diameters. The tensile testing results show that the mechanical strength of the dissimilar joints, in terms of tensile strengths, was found to be 60% for AA 2014 and even for AA 5083 base metal values for 106mm/min welding speed, highest among the three welding speeds.