Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion

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 buildi...

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Autores principales:	Matthias Droste, Ruben Wagner, Johannes Günther, Christina Burkhardt, Sebastian Henkel, Thomas Niendorf, Horst Biermann
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	additive manufacturing threshold value TRIP isotropic microstructure Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/dc332aee9f284d8bb5df7bb3b57af44b
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spelling	oai:doaj.org-article:dc332aee9f284d8bb5df7bb3b57af44b2021-11-11T18:06:22ZCyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion10.3390/ma142165441996-1944https://doaj.org/article/dc332aee9f284d8bb5df7bb3b57af44b2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6544https://doaj.org/toc/1996-1944The 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.Matthias DrosteRuben WagnerJohannes GüntherChristina BurkhardtSebastian HenkelThomas NiendorfHorst BiermannMDPI AGarticleadditive manufacturingthreshold valueTRIPisotropic microstructureTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6544, p 6544 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	additive manufacturing threshold value TRIP isotropic microstructure Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	additive manufacturing threshold value TRIP isotropic microstructure Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Matthias Droste Ruben Wagner Johannes Günther Christina Burkhardt Sebastian Henkel Thomas Niendorf Horst Biermann Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
description	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.
format	article
author	Matthias Droste Ruben Wagner Johannes Günther Christina Burkhardt Sebastian Henkel Thomas Niendorf Horst Biermann
author_facet	Matthias Droste Ruben Wagner Johannes Günther Christina Burkhardt Sebastian Henkel Thomas Niendorf Horst Biermann
author_sort	Matthias Droste
title	Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
title_short	Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
title_full	Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
title_fullStr	Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
title_full_unstemmed	Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion
title_sort	cyclic crack growth in chemically tailored isotropic austenitic steel processed by electron beam powder bed fusion
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dc332aee9f284d8bb5df7bb3b57af44b
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Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion

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