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Journal of Mechanical Science and Technology

, Volume 28, Issue 12, pp 5095–5105 | Cite as

Experimental and finite element analysis of residual stress and distortion in GTA welding of modified 9Cr-1Mo steel

  • Mohammed Zubairuddin
  • Shaju K. Albert
  • S. Mahadevan
  • M. Vasudevan
  • Vilas Chaudhari
  • V. K. Suri
Article

Abstract

In this paper, investigation of residual stress and distortion induced in 3 mm thick Modified 9Cr-1Mo steel plates during GTA welding is carried out. SYSWELD software is used for the thermo-mechanical analysis. A 3D meshed model is created for the simulation and double ellipsoidal heat source distribution is used for the thermal analysis. Thermal cycles predicted near the fusion zone are compared with experimentally measured thermal cycles using thermocouples. Predicted residual stress profile across the fusion zone is compared with the measured profile using X-ray diffraction method. There is a good agreement between measured and predicted thermal cycles and residual stress profile. Distortion of the weld joint is measured using vertical electronic height gauge. Finite element analysis of distortion of the weld joint is carried out by applying both large and small distortion theories. Comparison of experimental and numerical results showed better accuracy if large distortion theory is applied.

Keywords

Modified 9Cr-1Mo steel TIG welding Thermal cycles Residual stress Distortion 

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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Mohammed Zubairuddin
    • 1
  • Shaju K. Albert
    • 2
  • S. Mahadevan
    • 2
  • M. Vasudevan
    • 2
  • Vilas Chaudhari
    • 1
  • V. K. Suri
    • 3
  1. 1.Institute for Plasma ResearchGandhinagarIndia
  2. 2.Indira Gandhi Centre for Atomic ResearchKalpakkamIndia
  3. 3.Bhabha Atomic Research CentreMumbaiIndia

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