Prediction of longitudinal seam weld quality in multi-chamber aluminium extrusion

Eren Can Sariyarlioglu; T. WELO; J. MA

doi:10.21741/9781644903131-83

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Prediction of longitudinal seam weld quality in multi-chamber aluminium extrusion

SARIYARLIOGLU Eren Can, WELO Torgeir, MA Jun

Abstract. In the extrusion of complex multi-chamber profiles, the longitudinal seam (L-seam) weld quality is significantly affected by the thermo-mechanical history and the ‘local’ formation conditions under which the weld is produced during the extrusion process. The L-seam welds can lead to non-uniform mechanical properties and variations with regard to the mechanical integrity of extruded products. Therefore, effective prediction and analysis of seam weld quality is crucial to quality insurance of extrusion products for advanced applications. This study deals with the prediction of L-seam weld quality and associated mechanism analysis in the extrusion of multi-chamber aluminium profiles to advance the understanding of how the ‘local’ thermo-mechanical history and conditions influence the weld quality. To this end, carefully controlled industrial-scale extrusion experiments were conducted to analyze the L-seam formation behaviour. Additionally, a finite element (FE) model was developed to investigate the thermo-mechanical history during the formation of L-seam welds. The model was also employed to predict the L-seam weld quality, incorporating several welding quality criteria, namely Q, K, and J criteria. Examination of the thermo-mechanical history within the welding chamber reveals a compromise in the welding quality at the centre of the L-seam compared to near the surfaces. Moreover, the findings highlight that the J-criterion can provide the most consistent predictions for the L-seam quality, providing a more accurate reflection of the thermo-mechanical history during the solid-bonding process than the Q and K criteria. The findings can contribute to the development of process guidelines and quality assurance strategies for producing multi-chamber aluminium extrusion profiles.

Keywords
Aluminium Extrusion, Longitudinal Seam Weld, Multi-Chamber Profile

Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: SARIYARLIOGLU Eren Can, WELO Torgeir, MA Jun, Prediction of longitudinal seam weld quality in multi-chamber aluminium extrusion, Materials Research Proceedings, Vol. 41, pp 753-762, 2024

DOI: https://doi.org/10.21741/9781644903131-83

The article was published as article 83 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] W. Z. Misiolek, L. University, R. M. Kelly, and W. Co, “Extrusion of Aluminum Alloys,” 2005. https://doi.org/ 10.1361/asmhba0004015.
[2] H. Valberg, “Extrusion welding in aluminium extrusion,” International Journal of Materials and Product Technology, vol. 17, no. 7, p. 497, 2002. https://doi.org/ 10.1504/IJMPT.2002.001317.
[3] S. W. Bai, G. Fang, and J. Zhou, “Analysis of the bonding strength and microstructure of AA6082 extrusion weld seams formed during physical simulation,” J Mater Process Technol, vol. 250, pp. 109–120, Dec. 2017. https://doi.org/ 10.1016/j.jmatprotec.2017.07.012.
[4] A. J. Den Bakker, R. J. Werkhoven, W. H. Sillekens, and L. Katgerman, “The origin of weld seam defects related to metal flow in the hot extrusion of aluminium alloys en AW-6060 and en AW-6082,” J Mater Process Technol, vol. 214, no. 11, pp. 2349–2358, 2014. https://doi.org/ 10.1016/j.jmatprotec.2014.05.001.
[5] A. Loukus, G. Subhash, and M. Imaninejad, “Mechanical properties and microstructural characterization of extrusion welds in AA6082-T4,” J Mater Sci, vol. 39, pp. 6561–6569, 2004.
[6] J. Yu, G. Zhao, and L. Chen, “Investigation of interface evolution, microstructure and mechanical properties of solid-state bonding seams in hot extrusion process of aluminum alloy profiles,” J Mater Process Technol, vol. 230, pp. 153–166, Apr. 2016. https://doi.org/ 10.1016/j.jmatprotec.2015.11.020.
[7] J. Yu, G. Zhao, and L. Chen, “Analysis of longitudinal weld seam defects and investigation of solid-state bonding criteria in porthole die extrusion process of aluminum alloy profiles,” J Mater Process Technol, vol. 237, pp. 31–47, Nov. 2016. https://doi.org/ 10.1016/j.jmatprotec.2016.05.024.
[8] B. REGGIANI and L. DONATI, “Comparison of experimental methods to evaluate seam welds quality in extruded profiles,” Transactions of Nonferrous Metals Society of China, vol. 30, no. 3, pp. 619–634, Mar. 2020. https://doi.org/ 10.1016/S1003-6326(20)65241-4.
[9] Akeret R., “Properties of pressure welds in extruded aluminum alloy sections,” The Journal of the Institute of Metals, vol. 10, no. 202, 1972.
[10] Bourqui B., Huber A., Moulin C., and Bunetti A., “Improved weld seam quality using 3D FEM simulation in correlation with practice,” in Proceedings of First European Aluminum Association-Extruders Division), Montichiari, 2002.
[11] M. Plata and J. Piwnik, “Theoretical and experimental analysis of seam weld formation in hot extrusion of aluminum alloys,” in Proceedings of Seventh International Aluminum Extrusion Technology Seminar ET, 2000, pp. 205–211.
[12] L. Donati and L. Tomesani, “The prediction of seam welds quality in aluminum extrusion,” J Mater Process Technol, vol. 153–154, no. 1–3, pp. 366–373, Nov. 2004. https://doi.org/ 10.1016/j.jmatprotec.2004.04.215.
[13] L. Donati and L. Tomesani, “The effect of die design on the production and seam weld quality of extruded aluminum profiles,” J Mater Process Technol, vol. 164–165, pp. 1025–1031, May 2005. https://doi.org/ 10.1016/j.jmatprotec.2005.02.156.
[14] I. Kniazkin and A. Vlasov, “Quality prediction of longitudinal seam welds in aluminium profile extrusion based on simulation,” Procedia Manuf, vol. 50, pp. 433–438, 2020. https://doi.org/ 10.1016/j.promfg.2020.08.079.
[15] QForm UK, “QForm UK Extrusion 10,” Mar. 2022.
[16] S. Stebunov, N. Biba, A. Lishny, and L. Jiao, “Simulation and Optimization by QForm of Extrusion the Complex Thin Profiles,” in Aluminum Processing Technology International Seminar (APTIS), 2012.
[17] A. Hensel and T. Spittel, Kraft- und Arbeitsbedarf bildsamer Formgebungsverfahren, 1st ed. Leipzig: VEB Deutscher Verlag für Grundstoffindustrie, 1978.