Communications - Scientific Letters of the University of Zilina 2019, 21(3):40-47 | DOI: 10.26552/com.C.2019.3.40-47

Effect of Tool Pin Length on Microstructure and Mechanical Strength of the FSW Joints of Al 7075 Metal Sheets

Agata Wronska1, Jacek Andres1, Tomasz Altamer1, Agata Dudek2, Robert Ulewicz2
1 Polskie Zaklady Lotnicze Sp. z o.o., Mielec, Poland
2 Czestochowa University of Technology, Poland

The Friction stir welding (FSW) is a complex process, depending on many factors: machine, clamping device, material and tools. Parameters that have a direct impact on the quality of the joint include the rotational speed, welding speed, clamping force, geometry and tool plunging depth. The paper presents the results of experimental studies concerning the effect of tool pin length on the microstructure and mechanical strength of joints of thin sheets made of Al 7075 alloy. A tool with an adjustable pin with concave shoulder was used to weld the joints. Different pin lengths were used, which were selected with respect to the thickness of the welded joint. The specimens were subjected to visual evaluation, metallographic tests and mechanical strength testing. The results indicate that the pin length has a decisive effect on the microstructural changes in the joint and thus influencing the strength of the FSW joints.

Keywords: FSW lap joints; aluminium alloys; transportation industry

Received: April 7, 2019; Accepted: May 13, 2019; Published: August 15, 2019  Show citation

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Wronska, A., Andres, J., Altamer, T., Dudek, A., & Ulewicz, R. (2019). Effect of Tool Pin Length on Microstructure and Mechanical Strength of the FSW Joints of Al 7075 Metal Sheets. Communications - Scientific Letters of the University of Zilina, 21(3), 40-47. doi: 10.26552/com.C.2019.3.40-47
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    References

    1. MISHRA, R. S., MAHONEY, M. W. Friction stir welding and processing. ASM International, 2007. ISBN 978-0-87170-840-3.
    2. COLLIGAN, K. J. Friction stir welding for ship constructions [online]. Harrisburg, PA: Concurrent Technologies Corporation, 2009, p. 1-6 [accessed 2019-03-10]. Available from: https://cyberships.files.wordpress.com/2009/11/fswshipconstruction.pdf
    3. BUSSU, G., IRVING P. The role of residual stress and heat affected zone properties on fatigue crack propagation in friction stir welded 2024-T351 aluminium joints. International Journal of Fatigue [online]. 2003, 25(1), p. 77-88. ISSN 0142-1123. Available from: https://doi.org/10.1016/S0142-1123(02)00038-5 Go to original source...
    4. LIU, H., FUJII, H., MAEDA, M., NOGI, K. Tensile properties and fracture locations of friction-stir-welded joints of 2017-T351 aluminum alloy. Journal of Materials Processing Technology [online]. 2003, 142 (3), p. 692-696. ISSN 0924-0136, eISSN 1873-4774. Available from: https://doi.org/10.1016/S0924-0136(03)00806-9 Go to original source...
    5. SURESH BABU, A., DEVANTHAN, C. An overview of friction stir welding. International Journal of Research in Mechanical Engineering and Technology. 2013, 3(2), p.259-265. ISSN 2249-5770, eISSN 2249-5762.
    6. KUDLA, K., WOJSYK, K., KUCHARCZYK, Z. Wlasnosci zakladkowych zlaczy spajanych metoda zgrzewania tarciowego z przemieszaniem / FSW-Friction Stir Welding (in Polish). Obrobka Plastyczna Metali. 2013, XXIV(3), p. 179-191. ISSN 0867-2628.
    7. ZHANG, Y. N., CAO, X., LAROSE, S., WANJARA, P. Review of tools for friction stir welding and processing. Canadian Metallurgical Quarterly [online]. 2012, 51(3) p. 250-160. ISSN 0008-4433, eISSN 1879-1395. Available from: https://doi.org/10.1179/1879139512Y.0000000015 Go to original source...
    8. KIMAPONG, K., WATANABE, T. Effect of welding process parameters on mechanical property of FSW lap joint between aluminum alloy and steel. Materials Transactions [online]. 2005, 46(10), p. 2211-2217. ISSN 1345-9678, eISSN 1347-5320. Available from: https://doi.org/10.2320/matertrans.46.2211 Go to original source...
    9. ABDOLLAH-ZADEH, A., SAEID, T., SAZGARI, B. Microstructural and mechanical properties of friction stir welded aluminum/copper lap joints. Journal of Alloys and Compounds [online]. 2008, 460(1-2), p. 535-538. ISSN 0925-8388, eISSN 1873-4669. Available from: https://doi.org/10.1016/j.jallcom.2007.06.009 Go to original source...
    10. SHINODA, T., SUZUKI, J. Observation of metal flow phenomenon of lap joints during friction stir welding. Materials Science Forum [online]. 2004, 449-452, p. 421-424. ISSN 1662-9752. Available from: https://doi.org/10.4028/www.scientific.net/MSF.449-452.421 Go to original source...
    11. DE BACKER, J., VERHEYDEN, B. Robotic friction stir welding for automotive and aviation applications [online]. University West, Trollhattan. 2009, p. 23-24 [accessed 2019-03-10]. Available from: https://pdfs.semanticscholar.org/6c3c/82374be11b1861a732e8de7af3a342aa2a1a.pdf
    12. LAGO, J., BOKUVKA, O., NOVY, F. The weld toe improvement of advanced HSLA steel by laser remelting. Materials Today: Proceedings [online]. 2016, 3(4), p. 1037-1040. ISSN 2214-7853. Available from: https://doi.org/10.1016/j.matpr.2016.03.043 Go to original source...
    13. JAMBOR, M., NOVY, F., MICIAN, M., TRSKO, L., BOKUVKA, O., PASTOREK, F., HARMANIAK, D. Gas metal arc welding of thermo-mechanically controlled processed s960mc steel thin sheets with different welding parameters. Communications - Scientific Letters of the University of Zilina [online]. 2018, 20(4), p. 29-35. ISSN 1335-4205, eISSN 2585-7878. Available from: http://komunikacie.uniza.sk/index.php/communications/article/view/636 Go to original source...
    14. ARBEGAST, W. J. A flow-partitioned deformation zone model for defect formation during friction stir welding. Scripta Materialia [online]. 2008, 58(5), p. 372-376. ISSN 1359-6462. Available from: https://doi.org/10.1016/j.scriptamat.2007.10.031 Go to original source...
    15. CHEN, Z. W., YAZDANIAN, S. Friction stir lap welding: material flow, joint structure and strength. Journal of Achievements in Materials and Manufacturing Engineering [online]. 2012. 55(2), p. 629-637. ISSN 1734-8412. Available from: http://jamme.acmsse.h2.pl/papers_vol55_2/58263.pdf
    16. KUMAR, K., KAILAS, S. V. The role of friction stir welding tool on material flow and weld formation. Materials Science Engineering A [online]. 2008, 485(1-2), p. 367-374. ISSN 0921-5093. Available from: https://doi.org/10.1016/j.msea.2007.08.013 Go to original source...
    17. WANG, M., ZHANG, H., ZHANG, J., ZHANG, X., YANG, L. Effect of pin length on hook size and joint properties in friction stir lap welding of 7B04 aluminum alloy. Journal of Materials Engineering and Performance [online]. 2014, 23(5), p. 1881-1886. ISSN 1059-9495, eISSN 1544-1024. Available from: https://doi.org/10.1007/s11665-014-0936-5 Go to original source...
    18. YAZDANIAN, S., CHEN, Z. W. Effect of friction stir lap welding conditions on joint strength of aluminium alloy 6060. IOP Conference Series: Materials Science and Engineering [online]. 2009, 4(1), p. 1-5. ISSN 1757-8981, eISSN 1757-899X. Available from: https://doi.org/10.1088/1757-899X/4/1/012021 Go to original source...
    19. ZHANG, H., WANG, M., ZHANG, X., ZHU, Z., YU, T., YANG, G. Effect of welding speed on defect features and mechanical performance of friction stir lap welded 7B04 aluminum alloy. Metals [online]. 2016, 6(87), p. 1-11. eISSN 2075-4701. Available from: https://doi.org/10.3390/met6040087 Go to original source...
    20. CEDERQVIST, L., REYNOLDS, P. Factors affecting the properties of friction stir welded aluminum lap joints. Welding Journal. 2001, 80, p. 281-287. ISSN 0043-2296.
    21. CAO, X., JAHAZI, M. Effect of tool rotational speed and probe length on lap joint quality of a friction stir welded magnesium alloy. Materials and Design [online]. 2011, 32(1), p. 1-11. ISSN 0261-3069. Available from: https://doi.org/10.1016/j.matdes.2010.06.048 Go to original source...
    22. YAZDANIAN, S., CHEN, Z. W., LITTLEFAIR, G. Effects of friction stir lap welding parameters on weld features on advancing side and fracture strength of AA6060-T5 welds. Journal of Material Science [online]. 2012, 47, p. 1251-1261. ISSN 0022-2461, eISSN 1573-4803. Available from: https://doi.org/10.1007/s10853-011-5747-6 Go to original source...

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