Numerical and Experimental Studies on Friction Stir Welding of AA 7068-T6 for different welding speeds

Bindu M. Dharmajan; Sunny P. Tide; Balakrishnan A. Bhasi; Abubacker P. Abdul Samad

doi:10.15866/ireme.v14i10.19671

Numerical and Experimental Studies on Friction Stir Welding of AA 7068-T6 for different welding speeds

Bindu M. Dharmajan^(1*), Sunny P. Tide⁽²⁾, Balakrishnan A. Bhasi⁽³⁾, Abubacker P. Abdul Samad⁽⁴⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/ireme.v14i10.19671

Abstract

A three dimensional CFD model has been developed to investigate the effect of welding speed in the friction stir welding of AA 7068-T6 aluminium alloy. Numerical simulations were carried out using the RNG k-ε turbulence model. Three welding speeds, viz. 30 mm/min, 45 mm/min and 60 mm/min have been considered for the simulation. The tool rotational speed has been kept at 1100 rpm and the axial force at 7 kN. Three weld joints have been fabricated with identical parametric combinations. Peak temperatures for the three cases have been measured using a thermal imager. The quality of the joints fabricated has been evaluated by visual inspection and microstructure studies. The numerical study supported by the experiments has revealed that an increase in the welding speed decreases the peak temperature. The formation of voids seems to be a consequence of incomplete stirring induced by increased welding speed. The measured values of peak temperatures have been higher than the predicted values. The developed model has predicted temperatures with a maximum error of 3.34%. The developed CFD model can be used for optimizing FSW process without carrying out expensive experiments.
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Keywords

AA7068-T6; Friction Stir Welding; CFD; RNG k-ε Model

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References

R. S. Mishra, Z. Y. Ma, Friction stir welding and processing, Material science and Engineering R, Vol. 50, pp. 1-78, 2005.

Ava Azadi Chegeni, Platon Kapranos, A Microstructural Evaluation of Friction Stir Welded 7075 Aluminum Rolled Plate Heat Treated to the Semi-Solid State, Metals,8, 41, 2018.
https://doi.org/10.3390/met8010041

Akshansh Mishra, Devarrishi Dixit, Friction Stir Welding of Aerospace Alloys, Journal of Mechanical Engineering, Vol. 48, 2018.

Seyed Mahmoud Bayazid, Mahmud Mohamed Heddad, Ibrahim Cayiroglu, A review on friction stir welding, parameters, microstructure, mechanical properties, post weld heat treatment and defects, Material Science & Engineering International Journal, Vol. 2, Issue 4, 116‒126, 2018.
https://doi.org/10.15406/mseij.2018.02.00044

El-Kassas, A., Sabry, I., Mourad, A., Thekkuden, D., Characteristics of Potential Sources - Vertical Force, Torque and Current on Penetration Depth for Quality Assessment in Friction Stir Welding of AA 6061 Pipes, (2019) International Review of Aerospace Engineering (IREASE), 12 (4), pp. 195-204.
https://doi.org/10.15866/irease.v12i4.16362

Sabry, I., Mourad, A., Thekkuden, D., Comparison of Mechanical Characteristics of Conventional and Underwater Friction Stir Welding of AA 6063 Pipe Joints, (2020) International Review of Mechanical Engineering (IREME), 14 (1), pp. 64-70.
https://doi.org/10.15866/ireme.v14i1.17483

K. Deepandurai, R. Parameshwaran, Multi Response Optimization of FSW Parameters for Cast AA7075/SicP Composite, Materials and Manufacturing Processes 31:10, 1333-1341, 2016.
https://doi.org/10.1080/10426914.2015.1117628

Jignesh J. Patel, Dr. Mohammad Israr, Experimental Investigation of Friction Stir Welding of Aluminium Alloy AA7075 for Various Process Parameters, International Journal of Mechanics and Solids. Vol.12, Number 2, pp. 169-177, 2017.

M. Muthu Krishnana, J. Maniraj, R. Deepak, K. Anganand Prediction of optimum welding parameters for FSW of aluminium alloys AA6063 and A319 using RSM and ANN, Materials Today: Proceedings 5 , pp. 716–723, 2018.
https://doi.org/10.1016/j.matpr.2017.11.138

C. Rajendran, K. Srinivasan, V. Balasubramanian, H. Balaji, P. Selvaraj, Data set on prediction of friction stir welding parameters to achieve maximum strength of AA2014-T6 aluminium alloy joints, Data in Brief, Volume 23, 2019.
https://doi.org/10.1016/j.dib.2019.103735

Xiaocong He, Fengshou Gu, Andrew Ball, A review of numerical analysis of friction stir welding. Progress in Materials Science, Vol. 65, pp.1-66, 2014.
https://doi.org/10.1016/j.pmatsci.2014.03.003

A. Khalkhali, M. J. Saranjam, Finite element simulation of microstructure evolution during friction stir welding of automotive aluminum parts, International Journal of Automotive Engineering, Vol. 5, Number 1, 2015.

Sree Sabari, S. Malarvizhi,V. Balasubramanian, G. Madusudhan Reddy, Experimental and numerical investigation on under-water friction stir welding of armour grade AA2519-T87 aluminium alloy, Defence Technology, Volume 12, Issue 4, pp.324-333, 2016.
https://doi.org/10.1016/j.dt.2016.02.003

R. Jain, S. K. Pal, S. Singh, Finite Element Simulation of Temperature and Strain Distribution during Friction Stir Welding of AA2024 Aluminum Alloy. Journal of the Institution of Engineers (India): Series C, 98, pp. 37-43. 2017.
https://doi.org/10.1007/s40032-016-0304-3

Bilal Ahmad, Alexander Galloway, Athanasios Toumpis, Advanced numerical modelling of friction stir welded low alloy steel, Journal of Manufacturing Processes 34, 625–636, 2018.
https://doi.org/10.1016/j.jmapro.2018.07.003

Gianluca Buffa, Davide Campanella, Archimede Forcellese, Livan Fratini, Michela Simoncini, Antonio Barcellona, Constant Heat Input Friction Stir Welding of Variable Thickness A Z31 sheets through in process tool rotation control, Journal of Manufacturing Science and Engineering, Vol.141, 2019.
https://doi.org/10.1115/1.4043838

Tingke Wu, Fengqun Zhao , Haitao Luo, Haonan Wang ,Yuxin Li, Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy, Materials, 12, 3387, 2019.
https://doi.org/10.3390/ma12203387

Nikola Sibalic, Milan Vukcevic, Numerical Simulation for FSW Process at Welding Aluminium Alloy AA6082-T6, Metals 9, 747, 2019.
https://doi.org/10.3390/met9070747

B. Bagheri, M. Abbasi, Analysis of Microstructure and Mechanical Properties of Friction Stir Vibration Welded (FSVW) 5083 Aluminum Alloy Joints: Experimental and Simulation, Journal of Welding and Joining: pp. 243-253, 2019.
https://doi.org/10.5781/jwj.2019.37.3.8

Salloomi, Kareem N, Hussein, Furat I., Al-Sumaidae, Sanaa N. M. Temperature and Stress Evaluation during Three Different Phases of Friction Stir Welding of AA 7075-T651 Alloy, Modelling and Simulation in Engineering, vol. 2020, Article ID 3197813, 11 pages, 2020.
https://doi.org/10.1155/2020/3197813

Pierpaolo Carlone, Gaetano S. Palazzo, A Numerical and Experimental Analysis of Microstructural Aspects inAA2024-T3 Friction Stir Welding, Key Engineering Materials, Vol. 554-557 pp 1022-1030, 2013.
https://doi.org/10.4028/www.scientific.net/kem.554-557.1022

R. Padmanaban ,V. Ratna Kishore , V. Balusamy, Numerical Simulation of Temperature Distribution and Material Flow During Friction Stir Welding of Dissimilar Aluminum Alloys, Procedia Engineering 97, pp.854 – 863, 2014.
https://doi.org/10.1016/j.proeng.2014.12.360

Attila Savaş, Investigating the influence of tool shape during FSW of aluminum alloy via CFD analysis, Journal of the Chinese Institute of Engineers, 2015.
https://doi.org/10.1080/02533839.2015.1091277

Yucan Zhu, Gaoqiang Chen, Qilong Chen, Gong Zhang, Qingyu Shi, Simulation of material plastic flow driven by non-uniform friction force during friction stir welding and related defect prediction, Materials and Design, Vol. 108, pp.400-410/2016.
https://doi.org/10.1016/j.matdes.2016.06.119

Xun Liu, Gaoqiang Chen, Jun Ni , Zhili Feng ,Computational Fluid Dynamics Modeling on Steady-State Friction Stir Welding of Aluminum Alloy 6061to TRIP Steel, Journal of Manufacturing Science and Engineering, Vol. 139, 2017.
https://doi.org/10.1115/1.4034895

Jason Cheon, Jin-Young Yoon, Cheolhee Kim, Suck-Joo N, A study on transient flow characteristic in friction stir welding with real time interface tracking by direct surface calculation, Journal of Material Processing Technology, Volume 255, pp. 621-634, 2018.
https://doi.org/10.1016/j.jmatprotec.2018.01.021

Uwe Janoske and Markus Bürger, Modelling of friction stir welding processes with a coupled immersed boundary-/volume of fluid-approach, Progress in Computational Fluid Dynamics, Vol. 19, No. 1, 2019.
https://doi.org/10.1504/pcfd.2019.10018830

K. Kumar, Satish V. Kailas, On the role of axial load and the effect of interface position on the tensile strength of a friction stir welded aluminium alloy, Materials and Design, 29, pp.791–797, 2008.
https://doi.org/10.1016/j.matdes.2007.01.012

A. M. Gaafer, T. S. Mahmoud, E. H. Mansour, Microstructural and mechanical characteristics of AA7020-O Al plates joined by friction stir welding, Materials Science and Engineering, A 527 pp.7424–7429, 2010.
https://doi.org/10.1016/j.msea.2010.08.040

Ali Mehri, Amir Abdollah-zadeh, Niloufar Habibi, Mostafa Hajian, and Jing Tao Wang, The Effects of Rotational Speed on Microstructure and Mechanical Properties of Friction Stir-Welded 7075-T6 Thin Sheet, Journal of Materials Engineering and Performance, 29, 2316-2323, 2020.
https://doi.org/10.1007/s11665-020-04733-w

Mohammad Mohammadi-pour, Alireza Khodabandeh, Sadegh Mohammadi-pour, Moslem Paidar Microstructure and mechanical properties of joints welded by friction-stir welding in aluminum alloy 7075-T6 plates for aerospace application, Rare Metals, 2016.
https://doi.org/10.1007/s12598-016-0692-9

Vijay Shivaji Gadakh, Kumar Adepu, Heat generation model for taper cylindrical pin profile in FSW, Journal of material research and technology, pp. 370-375, 2013.
https://doi.org/10.1016/j.jmrt.2013.10.003

H. Wang, P. Colegrove, H. M. Mayer, L. Campbell and R. D. Robson, Material constitutive behaviour and microstructure study on aluminium alloys for friction stir welding, Advanced Materials Research, Vol. 89-91, pp. 615-620, 2010.
https://doi.org/10.4028/www.scientific.net/amr.89-91.615

Arun Kumar Kadian, Gautam Puri, Suman Das Pankaj Biswas, Effect of tool geometry and process parameters on the material flow of friction stir welding, Design and Research Conference (AIMTDR 2014) December 12th–14th, 2014.

D. M. Neto, P. Neto, Numerical modeling of the friction stir welding process: a literature review, The International Journal of Advanced Manufacturing Technology, Vol.65, pp. 115-126, 2013.
https://doi.org/10.1007/s00170-012-4154-8

Gaoqiang Chen, Qingxian Ma, Shuai Zhang, Jianjun Wu, Gong Zhang, Qingyu Shi. Computational fluid dynamics simulation of friction stir welding: A comparative study on different frictional boundary conditions, J. Mater. Sci. Techno, 34(1): pp. 128-134, 2018.
https://doi.org/10.1016/j.jmst.2017.10.015

Basavaraj Sajjan, S. Varun, K. N. Varun Kumar, Adithya Parthasarathy, Investigation of Mechanical Properties and Dry Sliding Wear Behaviour of Graphite Reinforced Al7068 Alloy, Applied Mechanics and Materials, Vol.867, pp. 10-18, 2017.
https://doi.org/10.4028/www.scientific.net/amm.867.10

Jinrong Zuo, Longgang Hou, Xuedao Shu,Wenfei Peng, Anmin Yin, Jishan Zhang, Investigation of deformation induced precipitation and the related microstructure evolution of Al–Zn–Mg–Cu alloy 7050-T7451, Material Research Express, 7, 106529, 2020.
https://doi.org/10.1088/2053-1591/abc21b

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