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Experimental investigation of the friction stir welding dynamics of 6000 series aluminum alloys

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Abstract

Friction stir welding (FSW) is a resource-efficient and environmental-friendly solid state joining process that allows to combine especially aluminum alloys with superior joint quality. Therefore, FSW is perfectly suitable for light-weight applications. The interaction of material, welding tool and machine during welding results in process forces which show characteristic periodic variations. The reasons for this periodicity, however, are not completely understood yet. Since the welding force feedback data can presumably be used for online process monitoring, a deeper understanding of the processes leading to the friction stir welding dynamics is necessary. To reach this goal, an approach for a systematic investigation of the friction stir welding dynamics using postulated hypotheses is presented in this work. The hypotheses combine insights from literature as well as results from own welding experiments. In the experiments two aluminum alloys, EN AW 6016 and EN AW 6111, in tempers T4 and T6 each, were friction stir welded. The welding machine, the tool as well as the welding parameters were held constant for each material. The process forces, accelerations and spindle deflection were measured for each weld and additionally the joints were inspected visually for flaws. It was shown that the height of the process forces correlates loosely with the yield strength of the materials. The frequencies occurring during welding are identified to mainly consist of the spindle rotating speed and multiples thereof. The acceleration measurements are found to be a suitable way to identify welds with irregular surfaces, i.e. they provide a method for online process monitoring regarding the weld surface quality. Combining the findings from literature and insights from the experiments, five hypotheses are developed that allow a systematic investigation of the dynamics of the friction stir welding process. Each hypothesis covers a phenomenon that can lead to dynamic effects. The hypotheses consider not only the process but the whole system of process and machine. In addition to the hypotheses, a method to prove or disprove them, where the specific effects are triggered intentionally, is presented.

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References

  1. Lakshminarayanan AK, Balasubramanian V, Elangovan K (2009) Effect of welding processes on tensile properties of AA6061 aluminium alloy joints. Int J Adv Manuf Technol 40(3–4):286–296

    Article  Google Scholar 

  2. Thomas W, Nicholas E, Needham J, Murch M, Templesmith P, Dawes C (1991) Great Britain Patent G.B. Patent Application No. 9125978.8

  3. Werz M, Seidenfuß M (2016) High-strength friction stir welds for joining aluminum and steel with dissimilar sheet thicknesses. In: 11th international symposium on friction stir welding, Cambridge

  4. Mishra RS, Ma ZY (2005) Friction stir welding and processing. Mater Sci Eng R 50(1–2):1–78

    Article  Google Scholar 

  5. Reynolds AP (2008) Flow visualization and simulation in FSW. Scripta Mater 58(5):338–342

    Article  Google Scholar 

  6. Ji L, Zuo DW, Wang M (2016) Force response characteristics and mechanical properties of friction stir welded AA2024 sheets. Mater Sci Technol 32(18):1–7

    Article  Google Scholar 

  7. Shahi P, Barmouz M, Asadi P (2014) Force and torque in friction stir welding. In: Givi MKB, Asadi P (eds) Advances in friction-stir welding and processing, 1st edn. Woodhead, Cambridge. https://doi.org/10.1533/9780857094551.459

    Chapter  Google Scholar 

  8. Record JH, Covington JL, Nelson TW, Sorensen CD, Webb BW (2007) A look at the statistical identification of critical process parameters in friction stir welding. Weld J 86(4):97s–103s

    Google Scholar 

  9. Hattingh DG, Blignault C, van Niekerk TI, James MN (2008) Characterization of the influences of FSW tool geometry on welding forces and weld tensile strength using an instrumented tool. J Mater Process Technol 203(1–3):46–57

    Article  Google Scholar 

  10. Zaeh MF, Gebhard P (2010) Dynamical behaviour of machine tools during friction stir welding. Prod Eng Res Dev 4(6):615–624

    Article  Google Scholar 

  11. Qian JW, Li JL, Xiong JT, Zhang FS, Li WY, Lin X (2012) Periodic variation of torque and its relations to interfacial sticking and slipping during friction stir welding. Sci Technol Weld Join 17(4):338–341

    Article  Google Scholar 

  12. Xiong JT, Zhang XC, Li P, Qian JW, Li JL, Zhang FS, Dong HB (2014) Characterisation of periodic variation in torque occurred in friction stir welding process. Sci Technol Weld Join 19(4):350–354

    Article  Google Scholar 

  13. Yan JH, Sutton MA, Reynolds AP (2007) Processing and banding in AA2524 and AA2024 friction stir welding. Sci Technol Weld Join 12(5):390–401

    Article  Google Scholar 

  14. Fonda R, Reynolds A, Feng C, Knipling K, Rowenhorst D (2013) Material flow in friction stir welds. Metal Mater Trans A 44(1):337–344

    Article  Google Scholar 

  15. Hoßfeld M (2016) Experimentelle, analytische und numerische Untersuchungen des Rührreibschweißprozesses. Dissertation, Universität Stuttgart

  16. Shrivastava A, Zinn M, Duffie NA, Ferrier NJ, Smith CB, Pfefferkorn FE (2015) Analysis of force transients during friction stir welding. In: 43rd Proceedings of the North American manufacturing research, vol XXX, pp 1–10

  17. Shrivastava A, Pfefferkorn FE, Duffie NA, Ferrier NJ, Smith CB, Malukhin K, Zinn M (2015) Physics-based process model approach for detecting discontinuity during friction stir welding. Int J Adv Manuf Technol 79(1–4):605–614

    Article  Google Scholar 

  18. Gratecap F, Girard M, Marya S, Racineux G (2012) Exploring material flow in friction stir welding: tool eccentricity and formation of banded structures. Int J Mater Form 5(2):99–107

    Article  Google Scholar 

  19. Boldsaikhan E, Corwin E, Logar A, McGough J, Arbegast W (2009) Detecting wormholes in friction stir welds from welding feedback data. In: 42nd midwest instruction and computing symposium, Rapid City, SD

  20. Boldsaikhan E, Burford DA, Gimenez Britos PJ (2011) Effect of plasticized material flow on the tool feedback forces during friction stir welding. In: Mishra R, Mahoney MW, Sato Y, Hovanski Y, Verma R (eds) Friction stir welding and processing VI. Wiley, Hoboken. https://doi.org/10.1002/9781118062302

    Chapter  Google Scholar 

  21. Kumar U, Yadav I, Kumari S, Kumari K, Ranjan N, Kesharwani RK, Jain R, Kumar S, Pal S, Chakravarty D, Pal SK (2015) Defect identification in friction stir welding using discrete wavelet analysis. Adv Eng Softw 85:43–50

    Article  Google Scholar 

  22. Jene T, Dobmann G, Wagner G, Eifler D (2008) Monitoring of the friction stir welding process to describe parameter effects on joint quality. Weld World 52(9/10):47–53

    Article  Google Scholar 

  23. Moal GL, Darras F, Chartier D (2015) On the feasibility of a monitoring system for the friction stir welding process: literature review and experimental study. In: IEEE international conference on automation science and engineering (CASE), Göteborg, Schweden, pp 1576–1583

  24. Soundararajan V, Valant M, Kovacevic R (2006) An overview of R&D work in friction stir welding at SMU. Metalurgija 12(4):275–295

    Article  Google Scholar 

  25. Sinha P, Muthukumaran S, Sivakumar R, Mukherjee SK (2008) Condition monitoring of first mode of metal transfer in friction stir welding by image processing techniques. Int J Adv Manuf Technol 36:484–489

    Article  Google Scholar 

  26. Sued M, Pons D (2016) Dynamic interaction between machine, tool, and substrate in bobbin friction stir welding. Int J Manuf Eng 2016:8697453. https://doi.org/10.1155/2016/8697453

    Article  Google Scholar 

  27. Technische Universität Ilmenau and Universität Stuttgart (2007) Untersuchungen zur Übertragbarkeit der Prozessparameter auf Anlagen unterschiedlicher Bauart beim Herstellen von Tailored Blanks auf geschlossener Bahn mittels Rührreibschweißen. Forschungsvorhaben AiF-Nr. 14572 N / DVS-Nr. 05.034

  28. Benedyk JC (2010) International temper designation systems for wrought aluminum alloys: part II-thermally treated (T Temper) aluminum alloys. Light Metal Age 68(4):16–22

    Google Scholar 

  29. Johnson GR, Cook WH (1983) A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures. In: Proceedings of the 7th international symposium on ballistics, vol 21

  30. Gebhard P (2011) Dynamisches Verhalten von Werkzeugmaschinen bei Anwendung für das Rührreibschweißen. Dissertation, Technische Universität München, München

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Acknowledgements

The authors would like to thank the Ministerium für Wirtschaft, Arbeit und Wohnungsbau Baden-Württemberg, Germany for providing funding for the presented research work in scope of the program “Technologischer Ressourcenschutz”.

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Authors and Affiliations

  1. Institute for Materials Testing, Materials Science and Strength of Materials (IMWF) of the University of Stuttgart, Stuttgart, Germany

    Florian Panzer

  2. Materials Testing Institute (MPA) University of Stuttgart, Stuttgart, Germany

    Martin Werz & Stefan Weihe

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  1. Florian Panzer
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  2. Martin Werz
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Correspondence to Florian Panzer.

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Panzer, F., Werz, M. & Weihe, S. Experimental investigation of the friction stir welding dynamics of 6000 series aluminum alloys. Prod. Eng. Res. Devel. 12, 667–677 (2018). https://doi.org/10.1007/s11740-018-0834-z

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  • DOI: https://doi.org/10.1007/s11740-018-0834-z

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