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Effect of Process Parameters on Clad Quality of Duplex Stainless Steel Using GMAW Process

  • B. Chakrabarti
  • H. Das
  • S. Das
  • T. K. Pal
Technical Paper

Abstract

In recent years, weld cladding are being applied in numerous industries as cost effective engineering solution to use a surface protection layer to protect carbon steel against corrosion attack. The desirable characteristics of cladding alloy are reasonable strength, weldability, resistance to general and localized corrosion attack. The duplex stainless steel having all the desirable characteristic is the candidate material for cladding. However, duplex weld metals have not been studied in detail as duplex stainless steels. Consequently, the properties of duplex weld metals are less well known and only partially understood. In the present study, the properties of duplex weld deposits of the 22 % Cr, 10 % Ni, 3 % Mo, and 0.12 % N type using GMAW process have been investigated. In particular, the influence of welding heat input and shielding gas composition in GMAW process on weld deposit microstructure, impact toughness and resistance to pitting corrosion have been studied. It is observed that concentration of nitrogen of weld deposits influenced by both heat input and shielding gas composition exerted significant effect on microstructure, low temperature toughness and resistance to pitting corrosion.

Keyword

Gas metal arc welding (GMAW) Clad quality Impact toughness Pitting corrosion 

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Copyright information

© Indian Institute of Metals 2013

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentKalyani Government Engineering CollegeKalyaniIndia
  2. 2.Welding Technology Centre, Metallurgical and Material Engineering DepartmentJadavpur UniversityKolkataIndia

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