Aufsatz
Consequences of Deep Rolling at Elevated Temperature on Near-Surface and Fatigue Properties of High-Manganese TWIP Steel X40MnCrAl19-2
Abstract
Due to pronounced work-hardening induced by the complex interplay of deformation mechanisms such as dislocation slip, twinning and/or martensitic phase transformation, high-manganese steels represent a class of materials well-suited for mechanical surface treatment. In the present study, the fatigue behavior of a high-mangsanese steel showing twinning-induced plasticity (TWIP) effect at room temperature (RT) was investigated after deep rolling at 550 °C. Results are compared to a former study discussing the behavior after RT deep rolling. Evolution of the near-surface microstructure was analyzed by scanning electron microscopy (SEM), microhardness measurements and residual stress depth profiles obtained by X-ray diffraction (XRD). Both uniaxial tensile tests and uniaxial tension-compression fatigue tests have been conducted in order to rationalize the macroscopic material behavior. Following deep rolling at 550 °C, SEM measurements employing electron backscatter diffraction (EBSD) revealed a heavily deformed surface layer as well as localized deformation twinning. Specimens showed inferior hardness and residual stress depth profiles when compared to RT deep rolled counterparts. Tensile tests indicated no difference between the conditions considered. Fatigue properties however were improved. Such behavior is rationalized by a more stable residual stress state induced by dynamic strain aging.
Citation
In: Applied Sciences Volume 11 / Issue 21 (2021-11-05) eissn:2076-3417Citation
@article{doi:10.17170/kobra-202305108002,
author={Wegener, Thomas and Krochmal, Marcel and Oevermann, Torben and Niendorf, Thomas},
title={Consequences of Deep Rolling at Elevated Temperature on Near-Surface and Fatigue Properties of High-Manganese TWIP Steel X40MnCrAl19-2},
journal={Applied Sciences},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/14691 3000 Wegener, Thomas 3010 Krochmal, Marcel 3010 Oevermann, Torben 3010 Niendorf, Thomas 4000 Consequences of Deep Rolling at Elevated Temperature on Near-Surface and Fatigue Properties of High-Manganese TWIP Steel X40MnCrAl19-2 / Wegener, Thomas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/14691=x R 4204 \$dAufsatz 4170 5550 {{Materialermüdung}} 5550 {{Festwalzen}} 5550 {{TWIP-Stahl}} 5550 {{Eigenspannung}} 7136 ##0##http://hdl.handle.net/123456789/14691
2023-05-10T13:30:48Z 2023-05-10T13:30:48Z 2021-11-05 doi:10.17170/kobra-202305108002 http://hdl.handle.net/123456789/14691 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ high-manganese steel deep rolling TWIP near-surface properties residual stresses residual stress stability fatigue behavior 500 600 Consequences of Deep Rolling at Elevated Temperature on Near-Surface and Fatigue Properties of High-Manganese TWIP Steel X40MnCrAl19-2 Aufsatz Due to pronounced work-hardening induced by the complex interplay of deformation mechanisms such as dislocation slip, twinning and/or martensitic phase transformation, high-manganese steels represent a class of materials well-suited for mechanical surface treatment. In the present study, the fatigue behavior of a high-mangsanese steel showing twinning-induced plasticity (TWIP) effect at room temperature (RT) was investigated after deep rolling at 550 °C. Results are compared to a former study discussing the behavior after RT deep rolling. Evolution of the near-surface microstructure was analyzed by scanning electron microscopy (SEM), microhardness measurements and residual stress depth profiles obtained by X-ray diffraction (XRD). Both uniaxial tensile tests and uniaxial tension-compression fatigue tests have been conducted in order to rationalize the macroscopic material behavior. Following deep rolling at 550 °C, SEM measurements employing electron backscatter diffraction (EBSD) revealed a heavily deformed surface layer as well as localized deformation twinning. Specimens showed inferior hardness and residual stress depth profiles when compared to RT deep rolled counterparts. Tensile tests indicated no difference between the conditions considered. Fatigue properties however were improved. Such behavior is rationalized by a more stable residual stress state induced by dynamic strain aging. open access Wegener, Thomas Krochmal, Marcel Oevermann, Torben Niendorf, Thomas 14 Seiten doi:10.3390/app112110406 Materialermüdung Festwalzen TWIP-Stahl Eigenspannung publishedVersion eissn:2076-3417 Issue 21 Applied Sciences Volume 11 false 10406
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