Date
2021Metadata
Show full item record
Aufsatz
On the influence of ϰ-carbides on the low-cycle fatigue behavior of high-Mn light-weight steels
Abstract
High-manganese light-weight steels offer a great potential for structural purposes in the mobility sector due to their reduced density combined with outstanding mechanical properties. As many of the envisaged applications of these materials will suffer from cyclic loading during their service life, the fundamentals of their fatigue behavior must be studied extensively. In the present work, the low-cycle fatigue (LCF) properties of an austenitic Fe-29.8Mn-7.65Al-1.11C light-weight steel were investigated. Two microstructurally different conditions are directly compared: a homogenized, fully austenitic condition and an aged, austenitic, ϰ-carbide-containing condition. Results elaborated by total strain-controlled fatigue tests are discussed considering microstructural insights revealed by scanning electron microscopy and synchrotron diffraction analysis. Although fatigue properties are improved upon aging due to ϰ-carbide formation for lower strain amplitudes as compared to homogenized counterparts, the cyclic deformation behavior is characterized by cyclic softening at increased strain levels. Shearing of the ϰ-carbides and their mechanical dissolution due to the onset of plastic deformation are found to be the underlying mechanisms. Determination of LCF parameters for both conditions was realized by evaluation of the fatigue life based on the Coffin-Manson law and Basquin equation, eventually providing explanations for the Masing and non-Masing behavior of the aged and homogenized condition, respectively, deduced from analysis of half-life hysteresis loops.
Additional Information
© This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/Citation
@article{doi:10.17170/kobra-202311309137,
author={Wegener, Thomas and Haase, Christian and Liehr, Alexander and Niendorf, Thomas},
title={On the influence of ϰ-carbides on the low-cycle fatigue behavior of high-Mn light-weight steels},
journal={International Journal of Fatigue},
year={2021}
}
0500 Oax
0501 Text $btxt$2rdacontent
0502 Computermedien $bc$2rdacarrier
1100 2021$n2021
1500 1/eng
2050 ##0##http://hdl.handle.net/123456789/15324
3000 Wegener, Thomas
3010 Haase, Christian
3010 Liehr, Alexander
3010 Niendorf, Thomas
4000 On the influence of ϰ-carbides on the low-cycle fatigue behavior of high-Mn light-weight steels / Wegener, Thomas
4030
4060 Online-Ressource
4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/15324=x R
4204 \$dAufsatz
4170
5550 {{Legierung}}
5550 {{Leichtbau}}
5550 {{Stahl}}
5550 {{Ermüdung bei niedrigen Lastspielzahlen}}
5550 {{Carbide}}
5550 {{Mikrostruktur}}
5550 {{Mechanische Eigenschaft}}
7136 ##0##http://hdl.handle.net/123456789/15324
<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2023-12-22T13:13:32Z 2023-12-22T13:13:32Z 2021 doi:10.17170/kobra-202311309137 http://hdl.handle.net/123456789/15324 © This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ eng Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Fe-MnAl-C light-weight steel low-cycle fatique ϰ-carbides microstructure 600 660 On the influence of ϰ-carbides on the low-cycle fatigue behavior of high-Mn light-weight steels Aufsatz High-manganese light-weight steels offer a great potential for structural purposes in the mobility sector due to their reduced density combined with outstanding mechanical properties. As many of the envisaged applications of these materials will suffer from cyclic loading during their service life, the fundamentals of their fatigue behavior must be studied extensively. In the present work, the low-cycle fatigue (LCF) properties of an austenitic Fe-29.8Mn-7.65Al-1.11C light-weight steel were investigated. Two microstructurally different conditions are directly compared: a homogenized, fully austenitic condition and an aged, austenitic, ϰ-carbide-containing condition. Results elaborated by total strain-controlled fatigue tests are discussed considering microstructural insights revealed by scanning electron microscopy and synchrotron diffraction analysis. Although fatigue properties are improved upon aging due to ϰ-carbide formation for lower strain amplitudes as compared to homogenized counterparts, the cyclic deformation behavior is characterized by cyclic softening at increased strain levels. Shearing of the ϰ-carbides and their mechanical dissolution due to the onset of plastic deformation are found to be the underlying mechanisms. Determination of LCF parameters for both conditions was realized by evaluation of the fatigue life based on the Coffin-Manson law and Basquin equation, eventually providing explanations for the Masing and non-Masing behavior of the aged and homogenized condition, respectively, deduced from analysis of half-life hysteresis loops. open access Wegener, Thomas Haase, Christian Liehr, Alexander Niendorf, Thomas doi:10.1016/j.ijfatigue.2021.106327 Legierung Leichtbau Stahl Ermüdung bei niedrigen Lastspielzahlen Carbide Mikrostruktur Mechanische Eigenschaft acceptedVersion eissn:1879-3452 International Journal of Fatigue Volume 150 false 106327 </resource>
The following license files are associated with this item:
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International