Journal of Materials Science

, Volume 42, Issue 18, pp 7794–7800 | Cite as

Welding of Al-359/20%SiCp metal matrix composites by the novel MIG process with indirect electric arc (IEA)

  • Rafael GarcíaEmail author
  • Victor H. López
  • Andrew R. Kennedy
  • Gabriel Arias


An Al-based composite reinforced with 20%SiCp was welded using the MIG welding process with direct and indirect application of the electric arc (DEA and IEA respectively). The welds were made on 12.5 mm thick plates in three welding passes for the DEA joint whereas only one pass was required for the IEA joint. Microstructural examination of the joints revealed DEA welds with light signs of matrix/reinforcement reaction whilst in the IEA welds the SiC particles remained with their initial angular morphology. Mechanical failure occurred consistently and independently of the type of joint in the weld zone and the measured strengths were 209 and 234 MPa for DEA and IEA welds respectively. The greater strength measured for the IEA weld was due to reduced porosity and good incorporation and dispersion of the SiC particles into the weld pool.


Welding Weld Metal Heat Input Weld Pool Welding Speed 



The authors would like to thank Coordinación de la Investigación Científica of the UMSNH for funding this study and to Juan Jose Uribe Galan from Instituto Tecnologico de Morelia for the facilities consented in the use of the Mitutoyo video line indenter.


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Rafael García
    • 1
    Email author
  • Victor H. López
    • 1
  • Andrew R. Kennedy
    • 2
  • Gabriel Arias
    • 1
  1. 1.Instituto de Investigaciones MetalúrgicasUniversidad Michoacana de San Nicolás de HidalgoMoreliaMexico
  2. 2.Advanced Materials Research Group, School of Mechanical, Materials and Manufacturing EngineeringUniversity of NottinghamNottinghamUK

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