INVESTIGATION ON PROPERTIES OF THE WELDED JOINTS BY FRICTION STIR WELDING OF TITANIUM UNDER AIR AND WATER

Authors

  • Ethiraj Narasimhalu Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.
  • Sivabalan Thanapal Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.
  • Vineth Kumar Jayakumar Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.
  • Vikram Rajendran Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.
  • Manikandan Chinna Thambi Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.
  • Vignesh Sundaram Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.
  • Meikeerthy Selvaraj Department of Mechanical Engineering, Dr.M.G.R Educational and Research Institute, Maduravoyal, Chennai-600 095, India.

Keywords:

Friction stir welding, underwater friction stir welding, mechanical properties, microstructure, titanium

Abstract

Friction stir welding (FSW) is one of the green manufacturing technologies which is eco- friendly due to the absence of electrode, sparks and fumes. Underwater FSW is the advancement of FSW and it is called so because the process takes place under the water. Titanium is widely used in automobile, aeronautics, marine industries etc. It is observed from the past researchers work that the FSW of titanium is difficult and compared with other materials. The current work is to investigate the effect of process parameters on mechanical and metallurgical properties of the welded joints made conventionally and also under the water. After trial and error, the tool rotational speed of 400, 500, 600, 700, and 800 rpm at constant tool traversing speed of 60 mm/min and 0o angle of tool tilt. The mechanical and microstructural properties of the joints are compared between air and underwater process as well as with the base material. Within the experimental values, the quality characteristics of the joints made are better in under water FSW than air FSW in all process parameters used. Among the process parameters used, best results are achieved at 500 rpm of tool rotational speed and 60 mm/min traversing speed in underwater FSW.

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Published

2026-08-28

How to Cite

Narasimhalu, E., Thanapal, S., Kumar Jayakumar, V., Rajendran, V., Chinna Thambi, M., Sundaram, V., & Selvaraj, M. (2026). INVESTIGATION ON PROPERTIES OF THE WELDED JOINTS BY FRICTION STIR WELDING OF TITANIUM UNDER AIR AND WATER. Suranaree Journal of Science and Technology, 28(6), 010086(1–7). retrieved from https://ph04.tci-thaijo.org/index.php/SUJST/article/view/15000

Issue

Vol. 28 No. 6 (2021): November - December

Section

Research Article