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The PC-GTAW of Ti–6Al–4V Thin Sheets and Its Effects on Mechanical and Microstructural Properties

  • Amirkeyvan RahimiEmail author
  • Morteza Shamanian
Technical Article
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Abstract

In this study, annealed Ti–6Al–4V alloy sheets with a thickness of 1 mm and with a butt-joint design were welded using gas tungsten arc welding without using filler metal. The aim of this study was to compare the specimens of the welding process with different current ratios (Ib/Ip) to find sample with high tensile strength and toughness. The welded specimens with optimal pulsed current ratios (Ib/Ip = 50, 75%), which made a basket-shaped structure with appropriate distribution alongside Widmanstätten layer phases, resulted in a soft fracture in the base metal zone as well as high strength in the tensile test.

Keywords

Gas tungsten arc welding Pulsed current Tensile strength Ti–6Al–4V alloy 
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Notes

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© ASM International 2019

Authors and Affiliations

  1. 1.Department of Materials EngineeringIsfahan University of TechnologyIsfahanIran

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