Characterization of aluminum/steel lap joint by friction stir welding

  • A. Elrefaey
  • M. Gouda
  • M. Takahashi
  • K. Ikeuchi
Testing And Evaluation


The welding of a lap joint of a commercially pure aluminum plate to a low carbon steel plate (i.e., Al plate top, and steel plate bottom) was produced by friction stir welding using various rotations and traveling speeds of the tool to investigate the effects of the welding parameters on the joint strength. The joint strength depended strongly on the depth of the pin tip relative to the steel surface; when the pin depth did not reach the steel surface, the joint failed under low applied loads. Meanwhile, slight penetration of the pin tip to the steel surface significantly increased the joint strength. The joint strength tended to increase with rotationspeed and slightly decrease with the increase in the traveling speed, although the results were quite scattered. The effects of the welding parameters were discussed metallographically based on observations with optical and scanning electron microscopes.


aluminum friction stir welding lap joint steel 


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Copyright information

© ASM International 2005

Authors and Affiliations

  • A. Elrefaey
    • 1
  • M. Gouda
    • 1
  • M. Takahashi
    • 1
  • K. Ikeuchi
    • 1
  1. 1.Joining and Welding Research InstituteOsaka UniversityOsakaJapan

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