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Mechanical Testing of Extruded Magnesium for the Development of Automobile Seat Frame Structures

Sikora, Sebastian P. and Bergmann, Luciano and Beeh, Elmar and Sulaiman, Hosen (2020) Mechanical Testing of Extruded Magnesium for the Development of Automobile Seat Frame Structures. 3rd International Conference on Materials Design and Applications (MDA), 5.-6. Nov. 2020, Porto, Portugal (virtuell).

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To validate a novel structural concept in magnesium lightweighting in early development stages, a magnesium alloy of type MgMnCe is characterized at coupon level and validated at profile level. The feasibility of friction stir welding is confirmed to integrate the alloy into the structure. Specimens are extracted from or set up on basis of generic profiles. For characterization amongst others, miniature tensile specimens in extrusion and transverse direction are utilized. Tensile results show the orthotropic material character of the ME21 alloy used. In transverse direction stiffness as well as strength increases, while elongation at break decreases. The material shows a strongly nonlinear, irreversible material behavior starting at small loads and a moderate strain-rate dependency. On profile level, closed rectangular profiles in four-point bending are used for validation at high impact velocities. These tests reveal large deformation without local failure. This deformation makes the use of closed rectangular profiles promising for the application in seat backrest structures.

Item URL in elib:https://elib.dlr.de/139704/
Document Type:Conference or Workshop Item (Speech)
Title:Mechanical Testing of Extruded Magnesium for the Development of Automobile Seat Frame Structures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:5 November 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:magnesium alloy, ME21, extrusion, material characterization, closed profile, friction stir welding
Event Title:3rd International Conference on Materials Design and Applications (MDA)
Event Location:Porto, Portugal (virtuell)
Event Type:international Conference
Event Dates:5.-6. Nov. 2020
Organizer:Lucas F. M. da Silva, University of Porto
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Energie und Verkehr (old), V - NGC Fahrzeugstruktur II (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Material and Process Applications for Road and Rail Vehicles
Institute of Vehicle Concepts
Deposited By: Sikora, Dr. Sebastian P.
Deposited On:12 Jan 2021 15:03
Last Modified:12 Jan 2021 15:03

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