Datum
2020-01-06Schlagwort
620 Ingenieurwissenschaften Inconel 718SchadenstoleranzFehlersucheZyklische DeformationStoffeigenschaftMetadata
Zur Langanzeige
Aufsatz
Damage Tolerance Evaluation of E-PBF-Manufactured Inconel 718 Strut Geometries by Advanced Characterization Techniques
Zusammenfassung
By means of electron beam powder bed fusion (E-PBF), highly complex lightweight structures can be manufactured within short process times. Due to the increasing complexity of producible components and the entangled interplay of damage mechanisms, common bulk material properties such as ultimate tensile or fatigue strength are not sufficient to guarantee safe and reliable use in demanding applications. Within this work, the damage tolerance of E-PBF-manufactured Ni-based alloy Inconel 718 (IN 718) strut geometries under uniaxial cyclic loading was investigated supported by several advanced measurement techniques. Based on thermal and electrical measurements, the failure of single struts could reliably be detected, revealing that continuous monitoring is applicable for such complex geometries. Process-induced surface roughness was found to be the main reason for early failure during cyclic loading. Thus, adequate post-processing steps have to be established for complex geometries to significantly improve damage tolerance and, eventually, in-service properties.
Zitierform
In: Materials Volume 13 / Issue 1 (2020-01-06) eissn:1996-1944Zitieren
@article{doi:10.17170/kobra-202308028556,
author={Kotzem, Daniel and Arold, Tizian and Niendorf, Thomas and Walther, Frank},
title={Damage Tolerance Evaluation of E-PBF-Manufactured Inconel 718 Strut Geometries by Advanced Characterization Techniques},
journal={Materials},
year={2020}
}
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2023-08-02T08:02:33Z 2023-08-02T08:02:33Z 2020-01-06 doi:10.17170/kobra-202308028556 http://hdl.handle.net/123456789/14962 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ electron beam powder bed fusion (E-PBF) Inconel 718 damage tolerance lattice structures cyclic behavior defect analysis 620 Damage Tolerance Evaluation of E-PBF-Manufactured Inconel 718 Strut Geometries by Advanced Characterization Techniques Aufsatz By means of electron beam powder bed fusion (E-PBF), highly complex lightweight structures can be manufactured within short process times. Due to the increasing complexity of producible components and the entangled interplay of damage mechanisms, common bulk material properties such as ultimate tensile or fatigue strength are not sufficient to guarantee safe and reliable use in demanding applications. Within this work, the damage tolerance of E-PBF-manufactured Ni-based alloy Inconel 718 (IN 718) strut geometries under uniaxial cyclic loading was investigated supported by several advanced measurement techniques. Based on thermal and electrical measurements, the failure of single struts could reliably be detected, revealing that continuous monitoring is applicable for such complex geometries. Process-induced surface roughness was found to be the main reason for early failure during cyclic loading. Thus, adequate post-processing steps have to be established for complex geometries to significantly improve damage tolerance and, eventually, in-service properties. open access Kotzem, Daniel Arold, Tizian Niendorf, Thomas Walther, Frank 21 Seiten doi:10.3390/ma13010247 Inconel 718 Schadenstoleranz Fehlersuche Zyklische Deformation Stoffeigenschaft publishedVersion eissn:1996-1944 Issue 1 Materials Volume 13 false 247
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