Fabrication of steel-aluminium parts by impact extrusion

authored by: Bernd Arno Behrens, Johanna Uhe, Furkan Süer, Deniz Duran, Tim Matthias, Ingo Ross
Abstract: The impact extrusion of axially arranged steel-aluminium billets was studied in this research. Two different bi-material billet concepts were considered: discrete and prejoined billets. Discrete billets were formed in order to achieve a joint through plastic deformation. Prejoined billets were created by friction welding beforehand and their behaviour under plastic deformation was investigated. Pressure superposition was utilised to improve the resulting bond strength by changing the stress state in the joining zone during forming. Depending on the magnitude of the applied counter pressure, the resulting bond strength could be influenced positively. It was also shown that the effect of die shoulder angle was not significant for the achieved bond strengths. The findings suggest that elevated billet temperatures can eliminate the need for counter pressure.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Article
Journal: Materials Today: Proceedings
Volume: 59
Pages: 220-226
No. of pages: 7
ISSN: 2214-7853
Publication date: 2022
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Materials Science(all)
Electronic version(s): https://doi.org/10.1016/j.matpr.2021.11.093 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{3b89a81e7da948ef888966bafa335896,
title = "Fabrication of steel-aluminium parts by impact extrusion",
abstract = "The impact extrusion of axially arranged steel-aluminium billets was studied in this research. Two different bi-material billet concepts were considered: discrete and prejoined billets. Discrete billets were formed in order to achieve a joint through plastic deformation. Prejoined billets were created by friction welding beforehand and their behaviour under plastic deformation was investigated. Pressure superposition was utilised to improve the resulting bond strength by changing the stress state in the joining zone during forming. Depending on the magnitude of the applied counter pressure, the resulting bond strength could be influenced positively. It was also shown that the effect of die shoulder angle was not significant for the achieved bond strengths. The findings suggest that elevated billet temperatures can eliminate the need for counter pressure.",
keywords = "Bond strength, Friction welding, Impact extrusion, Metal forming, Pressure superposition",
author = "Behrens, {Bernd Arno} and Johanna Uhe and Furkan S{\"u}er and Deniz Duran and Tim Matthias and Ingo Ross",
note = "Funding Information: The results presented in this paper were obtained within the Collaborative Research Centre 1153 “Process chain for the production of hybrid high-performance components through Tailored Forming” in the subprojects B03 and T02 funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – SFB 1153 – 252662854.",
year = "2022",
doi = "10.1016/j.matpr.2021.11.093",
language = "English",
volume = "59",
pages = "220--226",
journal = "Materials Today: Proceedings",
issn = "2214-7853",
publisher = "Elsevier Ltd.",
}