Inhibition of the formation of intermetallic compounds in aluminum-steel welded joints by friction stir welding

Authors

  • Edwar A. Torres López Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Materiais (CNPEM) - Universidad de Antioquia (UdeA), Facultad de Ingeniería
  • Antonio J. Ramirez Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Materiais (CNPEM) - Ohio State University (OSU), Department of Materials Science and Engineering

DOI:

https://doi.org/10.3989/revmetalm.053

Keywords:

Deleterious phases, Dissimilar joints, FexAly, Friction Stir Welding (FSW), Heat input

Abstract


Formation of deleterious phases during welding of aluminum and steel is a challenge of the welding processes, for decades. Friction Stir Welding (FSW) has been used in an attempt to reduce formation of intermetallic compounds trough reducing the heat input. In this research, dissimilar joint of 6063-T5 aluminum alloy and AISI-SAE 1020 steel were welded using this technique. The temperature of welded joints was measured during the process. The interface of the welded joints was characterized using optical microscopy, scanning and transmission electron microscopy. Additionally, composition measurements were carried out by X-EDS and DRX. The experimental results revealed that the maximum temperature on the joint studied is less than 360 °C. The microstructural characterization in the aluminum-steel interface showed the absence of intermetallic compounds, which is a condition attributed to the use of welding with low thermal input parameters.

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References

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Published

2015-12-30

How to Cite

Torres López, E. A., & Ramirez, A. J. (2015). Inhibition of the formation of intermetallic compounds in aluminum-steel welded joints by friction stir welding. Revista De Metalurgia, 51(4), e053. https://doi.org/10.3989/revmetalm.053

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