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Experimental investigation of pug cutter embedded TIG welding of Ti-6Al-4V titanium alloy

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Abstract

Light-weight materials, such as titanium alloy, have been extensively investigated. This paper primarily focuses on microstructural, metallurgical, and mechanical properties of the pug cutter embedded tungsten inert gas (TIG) welding of Ti-6Al-4V titanium alloy. In this work, TIG welding was modified to control the speed and the arc length. Analysis revealed that the microstructure underwent severe changes at different zones: coarsened in the fusion zone (FZ) and enlarged in the heat-affected zone (HAZ). The microstructure was finer at the base metal than those in the FZ and the HAZ, and the Vickers hardness values decreased from weld center line to the base metal. Tensile test showed that the specimen with low current and high speed was broken below its ultimate tensile strength, whereas most of the samples were broken at the base metal region that had a similar strength to that of the parent metal. The elongation of the metal was primarily affected by the heat input. A high volume of heat increased the hardness and the brittleness, resulting in low ductility.

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Authors and Affiliations

  1. Dept. of Mechanical Engg., Indian institute of Technology (ISM), Dhanbad, 826004, India

    Deepak Kumar Gope, Uday Kumar & Somnath Chattopadhyaya

  2. Dept. of Electrical Engg., Indian Institute of Technology (ISM), Dhanbad, 826004, India

    Sanjoy Mandal

Authors
  1. Deepak Kumar Gope
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  2. Uday Kumar
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  3. Somnath Chattopadhyaya
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  4. Sanjoy Mandal
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Corresponding author

Correspondence to Deepak Kumar Gope.

Additional information

Somnath Chattopadhyaya is presently working as Associate Professor in the Department of Mechanical Engineering of the Indian Institute of Technology (Indian School of Mines), Dhanbad. He has worked eight years in different industries and has 19 years of teaching and research experience. He is also an author of five books and one book chapter in the domain of manufacturing. He received the best researcher award sponsored by Canara Bank from the Department of Mechanical Engineering of IIT (ISM), Dhanbad in 2015.

Sanjoy Mandal obtained his Bachelor of Engineering degree from Bengal Engineering College under Calcutta University (currently Indian Institute of Engineering Science and Technology), India. He received his post-graduation and Ph.D. (Engineering) degree from Jadavpur University, India. He is currently working as an Associate Professor in the Department of Electrical Engineering Indian Institute of Technology (ISM), Dhanbad, India.

Deepak Kumar Gope is currently pursuing his Ph.D. at the Indian Institute of Technology Dhanbad. He earned his B.Tech. in Mechanical Engineering from West Bengal University of Technology. His research area is fabrication and advances manufacturing processes.

Uday Kumar is presently pursuing his Ph.D. at the Indian Institute of Technology (ISM) Dhanbad. He obtained his B.Tech. in Mechanical Engineering and M.Tech. in Manufacturing Technology. His research interests include laser welding and advanced manufacturing processes.

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Gope, D.K., Kumar, U., Chattopadhyaya, S. et al. Experimental investigation of pug cutter embedded TIG welding of Ti-6Al-4V titanium alloy. J Mech Sci Technol 32, 2715–2721 (2018). https://doi.org/10.1007/s12206-018-0528-7

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  • DOI: https://doi.org/10.1007/s12206-018-0528-7

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