Analysis of alloy influence on the joint formation in compound forging of geared steel-aluminium components

authored by: Bernd Arno Behrens, Kai Brunotte, Philipp Kuwert
Abstract: In order to reduce CO2 emissions, lightweight constructions and the use of steel-aluminium components have become increasingly important in current product development. When manufacturing such components, the dissimilar chemical and physical properties of these materials lead to major challenges in terms of metallurgical bond formation during joining. In particular, chemical compositions have a major impact on the joint properties and have therefore already been intensively investigated in welding technology. With regard to forming technology, the issue arises whether these findings can be transferred to simultaneous forming and joining for the manufacturing of steel-aluminium components by compound forging. In the scope of this study, aluminium workpieces were therefore alloyed with defined amounts of common welding additives such as zinc, nickel and silicon using powder metallurgy. Subsequently, these workpieces were forged together with steel and subjected to metallographic examination. The studies show that compound forging of the used alloy configurations is basically possible - however, bond formation varies significantly with different chemical composition. Alloying with zinc and silicon results in a reduced liquidus temperature and consequently in melting. In contrast, alloying with nickel leads to an extended joining zone and benefits the maximal mechanical load capacity.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
Pages: 190-195
No. of pages: 6
Publication date: 27.07.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Mechanics of Materials, Metals and Alloys, Surfaces, Coatings and Films
Electronic version(s): https://doi.org/10.37904/metal.2020.3487 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{71b45f1b1751492dbb84e3dc1bbb13aa,
title = "Analysis of alloy influence on the joint formation in compound forging of geared steel-aluminium components",
abstract = "In order to reduce CO2 emissions, lightweight constructions and the use of steel-aluminium components have become increasingly important in current product development. When manufacturing such components, the dissimilar chemical and physical properties of these materials lead to major challenges in terms of metallurgical bond formation during joining. In particular, chemical compositions have a major impact on the joint properties and have therefore already been intensively investigated in welding technology. With regard to forming technology, the issue arises whether these findings can be transferred to simultaneous forming and joining for the manufacturing of steel-aluminium components by compound forging. In the scope of this study, aluminium workpieces were therefore alloyed with defined amounts of common welding additives such as zinc, nickel and silicon using powder metallurgy. Subsequently, these workpieces were forged together with steel and subjected to metallographic examination. The studies show that compound forging of the used alloy configurations is basically possible - however, bond formation varies significantly with different chemical composition. Alloying with zinc and silicon results in a reduced liquidus temperature and consequently in melting. In contrast, alloying with nickel leads to an extended joining zone and benefits the maximal mechanical load capacity.",
keywords = "Compound forging, Lightweight, Powder metallurgy",
author = "Behrens, {Bernd Arno} and Kai Brunotte and Philipp Kuwert",
note = "Funding information: The results were obtained in the research project „Compound forging of hybrid powder-solid-parts made of steel and aluminum” financed under project number 310650453 by Deutsche Forschungsgemeinschaft (DFG).; 29th International Conference on Metallurgy and Materials, METAL 2020 ; Conference date: 20-05-2020 Through 22-05-2020",
year = "2020",
month = jul,
day = "27",
doi = "10.37904/metal.2020.3487",
language = "English",
pages = "190--195",
booktitle = "METAL 2020 - 29th International Conference on Metallurgy and Materials, Conference Proceedings",
publisher = "TANGER Ltd.",
}