Mechanical Properties of Co-Extruded Aluminium-Steel Compounds

authored by: Susanne Elisabeth Thürer, Johanna Uhe, Oleksandr Golovko, Christian Bonk, Anas Bouguecha, Bernd Arno Behrens, Christian Klose
Abstract: Within the scope of the Collaborative Research Centre (CRC) 1153 novel process chains for the production of hybrid solid components by Tailored Forming are developed at the Leibniz Universität Hannover. The combination of e. g. aluminium with steel allows to produce hybrid compounds with wear-resistant functional surfaces and reduced weight. In these process chains, joining takes place as the first step to produce hybrid semi-finished products by friction welding, cladding, ultrasonic assisted laser welding or co-extrusion, which are subsequently subjected to various forming processes such as forging or impact extrusion. The coaxially joined hybrid semifinished components investigated in this work were produced by means of the lateral angular co-extrusion (LACE) process using the aluminium alloy EN AW-6082 and the case-hardening steel 20MnCr5. These semi-finished products shall be suited to produce hybrid bearing bushings by die forging in a subsequent process step. Initial investigations for the determination of the process parameters and the appropriate tool geometry were made using a steel rod. In future investigations, a steel tube will replace the steel rod in order to produce hybrid semi-finished products, which can be fully integrated into the process chain. The mechanical properties of the profile were determined at different positions along its length. For this purpose, the quality of the joining zone between aluminium and steel as a function of the profile position was examined by means of push-out tests. Moreover, the mechanical properties of the aluminium component's longitudinal weld seam were determined by micro-tensile-tests.
Organisation(s): Institute of Materials Science
Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
Pages: 512-519
No. of pages: 8
Publication date: 03.07.2017
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Materials Science, Mechanics of Materials, Mechanical Engineering
Electronic version(s): https://doi.org/10.4028/www.scientific.net/KEM.742.512 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{c0d96058b0a24b57b0c356167880f387,
title = "Mechanical Properties of Co-Extruded Aluminium-Steel Compounds",
abstract = "Within the scope of the Collaborative Research Centre (CRC) 1153 novel process chains for the production of hybrid solid components by Tailored Forming are developed at the Leibniz Universit{\"a}t Hannover. The combination of e. g. aluminium with steel allows to produce hybrid compounds with wear-resistant functional surfaces and reduced weight. In these process chains, joining takes place as the first step to produce hybrid semi-finished products by friction welding, cladding, ultrasonic assisted laser welding or co-extrusion, which are subsequently subjected to various forming processes such as forging or impact extrusion. The coaxially joined hybrid semifinished components investigated in this work were produced by means of the lateral angular co-extrusion (LACE) process using the aluminium alloy EN AW-6082 and the case-hardening steel 20MnCr5. These semi-finished products shall be suited to produce hybrid bearing bushings by die forging in a subsequent process step. Initial investigations for the determination of the process parameters and the appropriate tool geometry were made using a steel rod. In future investigations, a steel tube will replace the steel rod in order to produce hybrid semi-finished products, which can be fully integrated into the process chain. The mechanical properties of the profile were determined at different positions along its length. For this purpose, the quality of the joining zone between aluminium and steel as a function of the profile position was examined by means of push-out tests. Moreover, the mechanical properties of the aluminium component's longitudinal weld seam were determined by micro-tensile-tests.",
keywords = "Co-extrusion, De-bonding shear stress, Intermetallic phases",
author = "Th{\"u}rer, {Susanne Elisabeth} and Johanna Uhe and Oleksandr Golovko and Christian Bonk and Anas Bouguecha and Behrens, {Bernd Arno} and Christian Klose",
note = "Publisher Copyright: {\textcopyright} 2017 Trans Tech Publications, Switzerland. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 21st Symposium on Composites, 2017 ; Conference date: 05-07-2017 Through 07-07-2017",
year = "2017",
month = jul,
day = "3",
doi = "10.4028/www.scientific.net/KEM.742.512",
language = "English",
isbn = "9783035711981",
series = "Key Engineering Materials",
publisher = "Trans Tech Publications Ltd",
pages = "512--519",
editor = "Herrmann, {Axel S.}",
booktitle = "21st Symposium on Composites, 2017",
}