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Transactions of the Indian Institute of Metals

, Volume 72, Issue 6, pp 1569–1573 | Cite as

Effect of Laser Shock Peening on Commercially Pure Titanium-1 Weldment Fabricated by Gas Tungsten Arc Welding Technique

  • Sandeep Varin
  • Mayank Agarwal
  • Aditya Chugh
  • M. ManikandanEmail author
  • S. Prabhakaran
  • S. Kalainathan
  • Pratik Shukla
  • Jonathan Lawrence
  • N. ArivazhaganEmail author
Technical Paper
  • 55 Downloads

Abstract

This research work investigates the effect of laser shock peening (LSP) on commercially pure titanium grade 1 (CP Ti-1) weldment. The welding was done using gas tungsten arc welding (GTAW) with ERTi-2 filler wire. LSP was carried out on the cap surface of the weldment. The optical microstructure showed the Widmanstatten-type martensitic structure in the fusion zone (as-welded). The LSP fusion zone showed a refined microstructure compared to that of as-welded condition. Scanning electron microscope (SEM) of LSP weldment showed the indentation on the surface of the weld. This was a result of the surface ablation that occurred during LSP. X-ray diffraction analysis showed the absence of transformation of phases in the weldment. A reduction of 14.8% of crystalline size was observed in LSP weldment. A higher compressive residual stress was observed in LSP weldment than the as-welded condition. Tensile test showed the occurrence of failure in the base metal region in the case of LSP weldment, as against the failure in the case of as-welded condition in the fusion zone.

Keywords

Commercial pure titanium Residual stress Laser shock peening Gas tungsten arc welding 

Notes

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Copyright information

© The Indian Institute of Metals - IIM 2019

Authors and Affiliations

  • Sandeep Varin
    • 1
  • Mayank Agarwal
    • 1
  • Aditya Chugh
    • 1
  • M. Manikandan
    • 1
    Email author
  • S. Prabhakaran
    • 2
  • S. Kalainathan
    • 2
  • Pratik Shukla
    • 3
  • Jonathan Lawrence
    • 3
  • N. Arivazhagan
    • 1
    Email author
  1. 1.School of Mechanical EngineeringVITVelloreIndia
  2. 2.Center for Crystal GrowthVITVelloreIndia
  3. 3.School of Mechanical, Aerospace and Automotive EngineeringCoventry UniversityCoventryUK

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