Date
2023-11-07Author
Sommer, NiklasLee, S.Stredak, FlorianWolf, ChristianSuckau, AndreasVollmer, MalteShao, S.Niendorf, ThomasShamsaei, NimaBöhm, StefanMetadata
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Aufsatz
Dynamic tensile deformation behavior of AISI 316L stainless steel fabricated by laser-beam directed energy deposition
Abstract
The dynamic deformation behavior of metallic materials is the key to crash-safe design in many applications, e.g., in the automotive sector. However, in the field of additive manufacturing, dynamic deformation properties have only been scarcely studied. Based on the intrinsic interrelationships of process parameters, post-process heat treatments and the resulting microstructure, the present study seeks to provide a holistic overview of the dynamic tensile deformation properties of AISI 316L stainless steel, fabricated by laser-beam directed energy deposition. Utilizing in situ digital image correlation, the local deformation behavior at varying strain rates from 100 s����� 1 to 1000 s����� 1 was unveiled. In combination with pre- and post-mortem microstructure analysis using electron backscatter diffraction and scanning transmission electron microscopy, the microstructural effects on the active deformation mechanisms were studied. The results show that twinning contributes to the overall deformation in the heat-treated condition owing to the weaker crystallographic texture. On the contrary, twinning is less prominent in the non-heat-treated condition due to its pronounced <001> texture. As a result of the differences in terms of active deformation mechanisms, superior fracture elongations are observed in heattreated condition, which are rationalized by delayed necking due to a more homogeneous strain distribution along the gauge section. Independently from the sample condition, fractography analysis revealed a ductile mode of failure being characterized by equiaxed dimples on the fracture surfaces. Consequently, it can be concluded that AISI 316L stainless steel is excellently suited for dynamic tensile loading, although heat-treatment-depended differences have to be taken into account.
Citation
In: Journal of Materials Research and Technology Volume 27 / November-December 2023 (2023-11-07) , S. 5896 - 5909 ; eissn:2214-0697Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202312159228,
author={Sommer, Niklas and Lee, S. and Stredak, Florian and Wolf, Christian and Suckau, Andreas and Vollmer, Malte and Shao, S. and Niendorf, Thomas and Shamsaei, Nima and Böhm, Stefan},
title={Dynamic tensile deformation behavior of AISI 316L stainless steel fabricated by laser-beam directed energy deposition},
journal={Journal of Materials Research and Technology},
year={2023}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2023$n2023 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/15300 3000 Sommer, Niklas 3010 Lee, S. 3010 Stredak, Florian 3010 Wolf, Christian 3010 Suckau, Andreas 3010 Vollmer, Malte 3010 Shao, S. 3010 Niendorf, Thomas 3010 Shamsaei, Nima 3010 Böhm, Stefan 4000 Dynamic tensile deformation behavior of AISI 316L stainless steel fabricated by laser-beam directed energy deposition / Sommer, Niklas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/15300=x R 4204 \$dAufsatz 4170 5550 {{Rekristallisation}} 5550 {{Edelstahl}} 5550 {{Laserstrahl}} 5550 {{Deformation}} 5550 {{Partnerschaft}} 7136 ##0##http://hdl.handle.net/123456789/15300
2023-12-15T12:10:09Z 2023-12-15T12:10:09Z 2023-11-07 doi:10.17170/kobra-202312159228 http://hdl.handle.net/123456789/15300 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ Additive manufacturing Directed energy deposition 316L stainless steel Dynamic tensile deformation Recrystallization heat-treatment Twinning 600 Dynamic tensile deformation behavior of AISI 316L stainless steel fabricated by laser-beam directed energy deposition Aufsatz The dynamic deformation behavior of metallic materials is the key to crash-safe design in many applications, e.g., in the automotive sector. However, in the field of additive manufacturing, dynamic deformation properties have only been scarcely studied. Based on the intrinsic interrelationships of process parameters, post-process heat treatments and the resulting microstructure, the present study seeks to provide a holistic overview of the dynamic tensile deformation properties of AISI 316L stainless steel, fabricated by laser-beam directed energy deposition. Utilizing in situ digital image correlation, the local deformation behavior at varying strain rates from 100 s����� 1 to 1000 s����� 1 was unveiled. In combination with pre- and post-mortem microstructure analysis using electron backscatter diffraction and scanning transmission electron microscopy, the microstructural effects on the active deformation mechanisms were studied. The results show that twinning contributes to the overall deformation in the heat-treated condition owing to the weaker crystallographic texture. On the contrary, twinning is less prominent in the non-heat-treated condition due to its pronounced <001> texture. As a result of the differences in terms of active deformation mechanisms, superior fracture elongations are observed in heattreated condition, which are rationalized by delayed necking due to a more homogeneous strain distribution along the gauge section. Independently from the sample condition, fractography analysis revealed a ductile mode of failure being characterized by equiaxed dimples on the fracture surfaces. Consequently, it can be concluded that AISI 316L stainless steel is excellently suited for dynamic tensile loading, although heat-treatment-depended differences have to be taken into account. open access Sommer, Niklas Lee, S. Stredak, Florian Wolf, Christian Suckau, Andreas Vollmer, Malte Shao, S. Niendorf, Thomas Shamsaei, Nima Böhm, Stefan doi:10.1016/j.jmrt.2023.10.251 Rekristallisation Edelstahl Laserstrahl Deformation Partnerschaft publishedVersion eissn:2214-0697 November-December 2023 Journal of Materials Research and Technology 5896 - 5909 Volume 27 false
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