Journal of Materials Engineering and Performance

, Volume 22, Issue 12, pp 3657–3664 | Cite as

Dilution and Ferrite Number Prediction in Pulsed Current Cladding of Super-Duplex Stainless Steel Using RSM

  • Abbas Eghlimi
  • Morteza ShamanianEmail author
  • Keyvan Raeissi


Super-duplex stainless steels have an excellent combination of mechanical properties and corrosion resistance at relatively low temperatures and can be used as a coating to improve the corrosion and wear resistance of low carbon and low alloy steels. Such coatings can be produced using weld cladding. In this study, pulsed current gas tungsten arc cladding process was utilized to deposit super-duplex stainless steel on high strength low alloy steel substrates. In such claddings, it is essential to understand how the dilution affects the composition and ferrite number of super-duplex stainless steel layer in order to be able to estimate its corrosion resistance and mechanical properties. In the current study, the effect of pulsed current gas tungsten arc cladding process parameters on the dilution and ferrite number of super-duplex stainless steel clad layer was investigated by applying response surface methodology. The validity of the proposed models was investigated by using quadratic regression models and analysis of variance. The results showed an inverse relationship between dilution and ferrite number. They also showed that increasing the heat input decreases the ferrite number. The proposed mathematical models are useful for predicting and controlling the ferrite number within an acceptable range for super-duplex stainless steel cladding.


cladding dilution ferrite number high strength low alloy steel response surface methodology super-duplex stainless steel 


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Copyright information

© ASM International 2013

Authors and Affiliations

  • Abbas Eghlimi
    • 1
  • Morteza Shamanian
    • 1
    Email author
  • Keyvan Raeissi
    • 1
  1. 1.Department of Materials EngineeringIsfahan University of TechnologyIsfahanIran

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