Joining zone shape optimisation for hybrid components made of aluminium-steel by geometrically adapted joining surfaces in the friction welding process

verfasst von: Bernd-Arno Behrens, Aleksandr Chugreev, M. Selinski, Tim Matthias
Abstract: In the Tailored Forming process chain, serially arranged aluminium-steel semi-finished products, joined by friction welding, are formed into hybrid shafts by a forward extrusion process. In the extrusion of serially arranged hybrid semi-finished products, it is crucial that the yield stress differences between the two materials are as small as possible. If the yield stress difference between the material components is too high, the local deformation is not sufficient and the different materials flow successively into the conical taper area with only a parallel displacement of the interface. In the preliminary work of the Collaborative Research Centre (CRC) 1153, the yield stress difference between the steel and aluminium alloy could not be compensated despite a developed inductive heating strategy, whereby the previously numerically determined optimised joint zone shape could not be achieved. In addition to the adapted heating strategy, the geometry of the joining zone can also be influenced by geometrically adapted joining surfaces in the friction welding process. In the context of this technical contribution, an individual adaptation of the joining zone geometry of the semi-finished products before friction welding is presented, whereby the numerically determined joining zone geometry can be achieved. With the conical welding surface geometries, an increase in bond strength of approx. 18 % was reached in contrast to plane surfaces. In addition to an extension of the joining zone surface, the relative velocity in the sample centre could also be increased, which has shown a positive effect on the bond strength.
Organisationseinheit(en): Institut für Umformtechnik und Umformmaschinen
Typ: Aufsatz in Konferenzband
Anzahl der Seiten: 7
Publikationsdatum: 02.07.2019
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Ökologie, Evolution, Verhaltenswissenschaften und Systematik, Ökologie, Pflanzenkunde, Allgemeine Physik und Astronomie, Natur- und Landschaftsschutz
Elektronische Version(en): https://doi.org/10.1063/1.5112561 (Zugang: Geschlossen)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@inproceedings{2d1de5de7efe4f6f99b3ebeb238a07bd,
title = "Joining zone shape optimisation for hybrid components made of aluminium-steel by geometrically adapted joining surfaces in the friction welding process",
abstract = "In the Tailored Forming process chain, serially arranged aluminium-steel semi-finished products, joined by friction welding, are formed into hybrid shafts by a forward extrusion process. In the extrusion of serially arranged hybrid semi-finished products, it is crucial that the yield stress differences between the two materials are as small as possible. If the yield stress difference between the material components is too high, the local deformation is not sufficient and the different materials flow successively into the conical taper area with only a parallel displacement of the interface. In the preliminary work of the Collaborative Research Centre (CRC) 1153, the yield stress difference between the steel and aluminium alloy could not be compensated despite a developed inductive heating strategy, whereby the previously numerically determined optimised joint zone shape could not be achieved. In addition to the adapted heating strategy, the geometry of the joining zone can also be influenced by geometrically adapted joining surfaces in the friction welding process. In the context of this technical contribution, an individual adaptation of the joining zone geometry of the semi-finished products before friction welding is presented, whereby the numerically determined joining zone geometry can be achieved. With the conical welding surface geometries, an increase in bond strength of approx. 18 % was reached in contrast to plane surfaces. In addition to an extension of the joining zone surface, the relative velocity in the sample centre could also be increased, which has shown a positive effect on the bond strength.",
author = "Bernd-Arno Behrens and Aleksandr Chugreev and M. Selinski and Tim Matthias",
note = "Funding information: The results presented in this paper were obtained within the Collaborative Research Centre 1153 “Process chain to produce hybrid high performance components by Tailored Forming” in the subprojects C01 funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - 252662854. The authors thank the German Research Foundation (DFG) for their financial support of this project. The friction welding tests were carried out in cooperation with subproject B03.; 22nd International ESAFORM Conference on Material Forming, ESAFORM 2019 ; Conference date: 08-05-2019 Through 10-05-2019",
year = "2019",
month = jul,
day = "2",
doi = "10.1063/1.5112561",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
number = "1",
editor = "Pedro Arrazola and {Saenz de Argandona}, Eneko and Nagore Otegi and Joseba Mendiguren and {Saez de Buruaga}, Mikel and Aitor Madariaga and Lander Galdos",
booktitle = "Proceedings of the 22nd International ESAFORM Conference on Material Forming",
}