Numerical Studies on Temperature and Material Flow During Friction Stir Welding using Different Tool Pin Profiles


  • M. D. Bindu Department of Mechanical Engineering, Research Scholar, Cochin University of Science and Technology, Kerala, India
  • P. S. Tide Department of Mechanical Engineering, Faculty of Engineering, Cochin University of Science and Technology, Kerala, India
  • A. B. Bhasi Department of Mechanical Engineering, Faculty of Engineering, Cochin University of Science and Technology, Kerala, India



AA 7068, Friction stir welding, CFD, RNG k- ε model, Tool pin profile


 A three dimensional computational fluid dynamics (CFD) model has been developed to study the effect of tool pin profile on the material flow and temperature development in friction stir welding (FSW) of high specific strength AA 7068 alloy. Numerical simulations were carried out using a RNG k-e turbulence model. Three tool pin profiles, viz. cylindrical, conical and straight cylindrical threaded were considered for the simulation. The temperature distribution and material flow pattern obtained from the simulation were compared for different pin profiles. Simulation results predicted Temperature distribution and material maxing was better in straight cylindrical tapered thread pin welds. Weld joints were fabricated using the straight cylindrical threaded pin with the same parametric combinations as in the simulation. Peak temperature measured in the experiment was less than that obtained by simulation. Hardness measurements taken at different weld regions has showed that about 71% of that of the base metal hardness is obtained with the threaded tool pin. The microstructure study revealed a defect free weld joint. Precipitates distributed in the microstructure indicate sufficient heat input to join the material without dissolving precipitates. The developed numerical model is helpful in optimising FSW process parameters.


Bayazid, Seyed Mahmoud, Mahmud Mohamed Heddad, and Ibrahim Cayiroglu. "A review on friction stir welding, parameters, microstructure, mechanical properties, post weld heat treatment and defects." Material Science and Engineering International Journal 2, no. 4 (2018): 116-126.

Rudrapati, Ramesh. "Recent advances in joining of aluminum alloys by using friction stir welding." Mass Production Processes (2019).

Minnicino, Michael, David Gray, and Paul Moy. Aluminum alloy 7068 mechanical characterization. Army Research Lab Aberdeen Proving Ground Md Weapons And Materials Research Directorate, 2009.

Abd El-Hameed, Afaf M., and Y. A. Abdel-Aziz. "Aluminium Alloys in Space Applications: A Short Report." Journal of Advanced Research in Applied Sciences and Engineering Technology 22, no. 1 (2021): 1-7.

Giordano, Giuseppe. "The Influence of the Details of Chemical Composition on the Performance of Quality Extrusions." PubliTec Online, September 6, 2018.

Meyghani, Bahman, and Chuansong Wu. "Progress in thermomechanical analysis of friction stir welding." Chinese Journal of Mechanical Engineering 33, no. 1 (2020): 12.

Mishra, Akshansh, and Devarrishi Dixit. "Friction Stir Welding of Aerospace Alloys." Journal of Mechanical Engineering 48, no. 1 (2018): 37-46.

Li, Hongjun, Jian Gao, Qinchuan Li, Alexander Galloway, and Athanasios Toumpis. "Effect of friction stir welding tool design on welding thermal efficiency." Science and Technology of Welding and Joining 24, no. 2 (2019): 156-162.

Tamadon, A., D. J. Pons, and D. Clucas. "Analogue Modelling of Flow Patterns in Bobbin Friction Stir Welding by the Dark-Field/Bright-Field Illumination Method." Advances in Materials Science 20, no. 1 (2020): 56-70.

Zhu, Zhi, Min Wang, Huijie Zhang, Xiao Zhang, Tao Yu, and Zhenqiang Wu. "A finite element model to simulate defect formation during friction stir welding." Metals 7, no. 7 (2017): 256.

Martinez, N., N. Kumar, R. S. Mishra, and K. J. Doherty. "Effect of tool dimensions and parameters on the microstructure of friction stir welded aluminum 7449 alloy of various thicknesses." Materials Science and Engineering: A 684 (2017): 470-479.

Gadakh, Vijay Shivaji, and Kumar Adepu. "Heat generation model for taper cylindrical pin profile in FSW." Journal of Materials Research and Technology 2, no. 4 (2013): 370-375.

Hamzah, Mushtaq Talib, and Ali Lateef Tarish. "Numerical Study of The Effect of Corrugated Wall on The Turbulent Forced Convective Heat Transfer and Fluid Flow Through a Forward-facing Step Channel." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 67, no. 1 (2020): 33-42.

Yusof, Siti Nurul Akmal, Yutaka Asako, Nor Azwadi Che Sidik, Saiful Bahri Mohamed, and Wan Mohd Arif Aziz Japar. "A Short Review on RANS Turbulence Models." CFD Letters 12, no. 11 (2020): 83-96.

Warjito, Warjito, Sanjaya BS Nasution, Muhammad Farhan Syahputra, Budiarso Budiarso, and Dendy Adanta. "Study of Turbulence Model for Performance and Flow Field Prediction of Pico Hydro Types Propeller Turbine." CFD Letters 12, no. 8 (2020): 26-34.

Tiwari, Avinish, Pardeep Pankaj, Saurav Suman, and Pankaj Biswas. "CFD Modelling of Temperature Distribution and Material Flow Investigation During FSW of DH36 Shipbuilding Grade Steel." Transactions of the Indian Institute of Metals 73, no. 9 (2020): 2291-2307.

Mills, Kenneth C. Recommended values of thermophysical properties for selected commercial alloys. Woodhead Publishing, 2002.

Chen, Gaoqiang, Qingxian Ma, Shuai Zhang, Jianjun Wu, Gong Zhang, and Qingyu Shi. "Computational fluid dynamics simulation of friction stir welding: A comparative study on different frictional boundary conditions." Journal of Materials Science & Technology 34, no. 1 (2018): 128-134.

Colegrove, Paul A., Hugh R. Shercliff, and Rudolf Zettler. "Model for predicting heat generation and temperature in friction stir welding from the material properties." Science and Technology of Welding and Joining 12, no. 4 (2007): 284-297.

Patel, Vivek, Wenya Li, Guoqing Wang, Feifan Wang, Achilles Vairis, and Pengliang Niu. "Friction stir welding of dissimilar aluminum alloy combinations: State-of-the-art." Metals 9, no. 3 (2019): 270.




How to Cite

Bindu, M. D., Tide, P. S., & Bhasi, A. B. (2021). Numerical Studies on Temperature and Material Flow During Friction Stir Welding using Different Tool Pin Profiles. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 83(1), 91–104.
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