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

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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.

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  1. Department of Materials Engineering, Isfahan University of Technology, Isfahan, 8415683111, Iran

    Amirkeyvan Rahimi & Morteza Shamanian

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  1. Amirkeyvan Rahimi
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  2. Morteza Shamanian
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Correspondence to Amirkeyvan Rahimi.

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Rahimi, A., Shamanian, M. The PC-GTAW of Ti–6Al–4V Thin Sheets and Its Effects on Mechanical and Microstructural Properties. Metallogr. Microstruct. Anal. 8, 871–879 (2019). https://doi.org/10.1007/s13632-019-00595-4

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  • DOI: https://doi.org/10.1007/s13632-019-00595-4

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