Lateral angular co-extrusion

Geometrical and mechanical properties of compound profiles

authored by: Susanne Elisabeth Thürer, Julius Peddinghaus, Norman Heimes, Ferdi Caner Bayram, Burak Bal, Johanna Uhe, Bernd-Arno Behrens, Hans-Jürgen Maier, Christian Klose
Abstract: A novel co-extrusion process for the production of coaxially reinforced hollow profiles has been developed. Using this process, hybrid hollow profiles made of the aluminum alloy EN AW-6082 and the case-hardening steel 20MnCr5 (AISI 5120) were produced, which can be forged into hybrid bearing bushings by subsequent die forging. For the purpose of co-extrusion, a modular tooling concept was developed where steel tubes made of 20MnCr5 are fed laterally into the tool. This LACE (lateral angular co-extrusion) process allows for a variation of the volume fraction of the reinforcement by using steel tubes with different wall thicknesses, which enabled the production of compound profiles having reinforcement contents of either 14 vol.% or 34 vol.%. The shear strength of the bonding area of these samples was determined in push-out tests. Additionally, mechanical testing of segments of the hybrid profiles using shear compression tests was employed to provide information about the influence of different bonding mechanisms on the strength of the composite zone.
Organisation(s): Institute of Materials Science
Institute of Metal Forming and Metal Forming Machines
External Organisation(s): Abdullah Gul University
Type: Article
Journal: Metals
Volume: 10
Pages: 1-15
No. of pages: 15
ISSN: 2075-4701
Publication date: 09.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Materials Science
Electronic version(s): https://doi.org/10.3390/met10091162 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{bea21022734b4edb80b362399f244f7a,
title = "Lateral angular co-extrusion: Geometrical and mechanical properties of compound profiles",
abstract = "A novel co-extrusion process for the production of coaxially reinforced hollow profiles has been developed. Using this process, hybrid hollow profiles made of the aluminum alloy EN AW-6082 and the case-hardening steel 20MnCr5 (AISI 5120) were produced, which can be forged into hybrid bearing bushings by subsequent die forging. For the purpose of co-extrusion, a modular tooling concept was developed where steel tubes made of 20MnCr5 are fed laterally into the tool. This LACE (lateral angular co-extrusion) process allows for a variation of the volume fraction of the reinforcement by using steel tubes with different wall thicknesses, which enabled the production of compound profiles having reinforcement contents of either 14 vol.% or 34 vol.%. The shear strength of the bonding area of these samples was determined in push-out tests. Additionally, mechanical testing of segments of the hybrid profiles using shear compression tests was employed to provide information about the influence of different bonding mechanisms on the strength of the composite zone.",
keywords = "Hybrid metal components, Lateral angular co-extrusion, Mechanical behavior, Tailored forming",
author = "Th{\"u}rer, {Susanne Elisabeth} and Julius Peddinghaus and Norman Heimes and Bayram, {Ferdi Caner} and Burak Bal and Johanna Uhe and Bernd-Arno Behrens and Hans-J{\"u}rgen Maier and Christian Klose",
note = "Funding information: 2. MAa tsecrhieamlsaatnicd seMcteitohno tdhsrough the developed modular tool is shown in Figure 2a. Since the LACE process involves the feeding of a rigid reinforcing element instead of a wire, a mandrel part was designed, which is supported by three support arms in the tool housing. In this concept, the aluminum alloy is divided into two metal streams by the portholes in the middle of the symmetrically designed entry. Both metal strands are then directed into pockets milled into each half of the tool cavity. This is intended to change the material flow in such a way that the aluminum alloy evenly envelops the reinforcing element and displacement and/or distortion of the compound profile is avoided. The aluminum alloy then flows around the mandrel part inside the tool. The reinforcing element, in this case a steel tube, is inserted into the tool orthogonally to the movement direction of the extrusion punch and guided through the clamping cover and the mandrel part. This also ensures a coTheaxial position of the taluminum alloy thenube in the comflows aroundpound profile. the mandrel part inside the tool. The reinforcing element, in",
year = "2020",
month = sep,
doi = "10.3390/met10091162",
language = "English",
volume = "10",
pages = "1--15",
journal = "Metals",
issn = "2075-4701",
publisher = "Multidisciplinary Digital Publishing Institute",
number = "9",
}