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2021-11-01Author
Droste, MatthiasWagner, RubenGünther, JohannesBurkhardt, ChristinaHenkel, SebastianNiendorf, ThomasBiermann, HorstSubject
620 Engineering Rapid Prototyping <Fertigung>SchwellenwertAustenitischer StahlRissausbreitungMetadata
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Aufsatz
Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
Abstract
The present study analyzes the cyclic crack propagation behavior in an austenitic steel processed by electron beam powder bed fusion (PBF-EB). The threshold value of crack growth as well as the crack growth behavior in the Paris regime were studied. In contrast to other austenitic steels, the building direction during PBF-EB did not affect the crack propagation rate, i.e., the crack growth rates perpendicular and parallel to the building direction were similar due to the isotropic microstructure characterized by equiaxed grains. Furthermore, the influence of significantly different building parameters was studied and, thereby, different energy inputs causing locally varying manganese content. Crack growth behavior was not affected by these changes. Even a compositional gradation within the same specimen, i.e., crack growth through an interface of areas with high and areas with low manganese content, did not lead to a significant change of the crack growth rate. Thus, the steel studied is characterized by a quite robust cyclic crack growth behavior independent from building direction and hardly affected by typical parameter deviations in the PBF-EB process.
Citation
In: Materials Volume 14 / Issue 21 (2021-11-01) eissn:1996-1944Citation
@article{doi:10.17170/kobra-202308028561,
author={Droste, Matthias and Wagner, Ruben and Günther, Johannes and Burkhardt, Christina and Henkel, Sebastian and Niendorf, Thomas and Biermann, Horst},
title={Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion},
journal={Materials},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/14965 3000 Droste, Matthias 3010 Wagner, Ruben 3010 Günther, Johannes 3010 Burkhardt, Christina 3010 Henkel, Sebastian 3010 Niendorf, Thomas 3010 Biermann, Horst 4000 Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion / Droste, Matthias 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/14965=x R 4204 \$dAufsatz 4170 5550 {{Rapid Prototyping <Fertigung>}} 5550 {{Schwellenwert}} 5550 {{Austenitischer Stahl}} 5550 {{Rissausbreitung}} 7136 ##0##http://hdl.handle.net/123456789/14965
2023-08-02T09:34:21Z 2023-08-02T09:34:21Z 2021-11-01 doi:10.17170/kobra-202308028561 http://hdl.handle.net/123456789/14965 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ additive manufacturing threshold value TRIP isotropic microstructure 620 Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion Aufsatz The present study analyzes the cyclic crack propagation behavior in an austenitic steel processed by electron beam powder bed fusion (PBF-EB). The threshold value of crack growth as well as the crack growth behavior in the Paris regime were studied. In contrast to other austenitic steels, the building direction during PBF-EB did not affect the crack propagation rate, i.e., the crack growth rates perpendicular and parallel to the building direction were similar due to the isotropic microstructure characterized by equiaxed grains. Furthermore, the influence of significantly different building parameters was studied and, thereby, different energy inputs causing locally varying manganese content. Crack growth behavior was not affected by these changes. Even a compositional gradation within the same specimen, i.e., crack growth through an interface of areas with high and areas with low manganese content, did not lead to a significant change of the crack growth rate. Thus, the steel studied is characterized by a quite robust cyclic crack growth behavior independent from building direction and hardly affected by typical parameter deviations in the PBF-EB process. open access Droste, Matthias Wagner, Ruben Günther, Johannes Burkhardt, Christina Henkel, Sebastian Niendorf, Thomas Biermann, Horst 13 Seiten doi:10.3390/ma14216544 Rapid Prototyping <Fertigung> Schwellenwert Austenitischer Stahl Rissausbreitung publishedVersion eissn:1996-1944 Issue 21 Materials Volume 14 false 6544
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