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Analysis of Metallurgical and Mechanical Properties of Continuous and Pulsed Current Gas Tungsten Arc Welded Alloy C-276 with Duplex Stainless Steel

  • M. Manikandan
  • N. Arivazhagan
  • M. Arivarasu
  • K. Mageshkumar
  • Deva N. Rajan
  • B. Arul Murugan
  • P. Prasanth
  • S. Sukumar
  • R. Vimalanathan
Technical Paper

Abstract

The present work investigates the microstructure and mechanical properties of alloy C-276 fabricated by continuous and pulsed current gas tungsten arc welding process and by employing ER2553 filler wire. Optical and scanning electron microscopic analyses were carried out to study the microstructures of weldments produced. Energy dispersive X-ray spectroscopy (EDS) was performed to investigate the formation of secondary phases in the weldments. The results disclosed that pulsed current gas tungsten arc welding showed refined microstructure compared to continuous current gas tungsten arc welding. SEM/EDS analysis revealed the segregation of Mo in the weld interface regions in both the welding techniques. The extent of microsegregation reduced the strength and toughness of the weld joint compared to the base metal. Bend test revealed cracks in the weld interface region in both the weldments.

Keywords

Alloy C-276 Pulsed current gas tungsten arc welding Secondary phases 

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Copyright information

© The Indian Institute of Metals - IIM 2017

Authors and Affiliations

  • M. Manikandan
    • 1
  • N. Arivazhagan
    • 1
  • M. Arivarasu
    • 1
  • K. Mageshkumar
    • 1
  • Deva N. Rajan
    • 2
  • B. Arul Murugan
    • 1
    • 3
  • P. Prasanth
    • 3
  • S. Sukumar
    • 3
  • R. Vimalanathan
    • 3
  1. 1.School of Mechanical EngineeringVIT UniversityVelloreIndia
  2. 2.Department of Mechanical EngineeringPanimalar Engineering CollegeChennaiIndia
  3. 3.Department of Mechanical EngineeringKPR Institute of Engineering and TechnologyCoimbatoreIndia

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