Date
2020-01-24Metadata
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Aufsatz
Effect of Compositional Variation Induced by EBM Processing on Deformation Behavior and Phase Stability of Austenitic Cr-Mn-Ni TRIP Steel
Abstract
Electron beam melting (EBM) is an established powder bed-based additive manufacturing process for the fabrication of complex-shaped metallic components. For metastable austenitic Cr-Mn-Ni TRIP steel, the formation of a homogeneous fine-grained microstructure and outstanding damage tolerance have been reported. However, depending on the process parameters, a certain fraction of Mn evaporates. This can have a significant impact on deformation mechanisms as well as kinetics, as was previously shown for as-cast material. Production of chemically graded and, thus, mechanically tailored parts can allow for further advances in terms of freedom of design. The current study presents results on the characterization of the deformation and strain-hardening behavior of chemically tailored Cr-Mn-Ni TRIP steel processed by EBM. Specimens were manufactured with distinct scan strategies, resulting in varying Mn contents, and subsequently tensile tested. Microstructure evolution has been thoroughly examined. Starting from one initial powder, an appropriate scan strategy can be applied to purposefully evaporate Mn and, therefore, adjust strain hardening as well as martensite formation kinetics and ultimate tensile strength.
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Gefördert im Rahmen des Projekts DEALCitation
@article{doi:10.17170/kobra-202005041208,
author={Günther, Johannes and Lehnert, Robert and Wagner, Ruben and Burkhardt, Christina and Wendler, Marco and Volkova, Olena and Biermann, Horst and Niendorf, Thomas},
title={Effect of Compositional Variation Induced by EBM Processing on Deformation Behavior and Phase Stability of Austenitic Cr-Mn-Ni TRIP Steel},
journal={JOM},
year={2020}
}
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3000 Günther, Johannes
3010 Lehnert, Robert
3010 Wagner, Ruben
3010 Burkhardt, Christina
3010 Wendler, Marco
3010 Volkova, Olena
3010 Biermann, Horst
3010 Niendorf, Thomas
4000 Effect of Compositional Variation Induced by EBM Processing on Deformation Behavior and Phase Stability of Austenitic Cr-Mn-Ni TRIP Steel / Günther, Johannes
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5550 {{Elektronenstrahlschmelzen}}
5550 {{Deformationsverhalten}}
5550 {{Thermodynamische Stabilität}}
5550 {{TRIP-Stahl}}
7136 ##0##http://hdl.handle.net/123456789/11540
<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2020-05-05T12:02:36Z 2020-05-05T12:02:36Z 2020-01-24 doi:10.17170/kobra-202005041208 http://hdl.handle.net/123456789/11540 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ 600 620 Effect of Compositional Variation Induced by EBM Processing on Deformation Behavior and Phase Stability of Austenitic Cr-Mn-Ni TRIP Steel Aufsatz Electron beam melting (EBM) is an established powder bed-based additive manufacturing process for the fabrication of complex-shaped metallic components. For metastable austenitic Cr-Mn-Ni TRIP steel, the formation of a homogeneous fine-grained microstructure and outstanding damage tolerance have been reported. However, depending on the process parameters, a certain fraction of Mn evaporates. This can have a significant impact on deformation mechanisms as well as kinetics, as was previously shown for as-cast material. Production of chemically graded and, thus, mechanically tailored parts can allow for further advances in terms of freedom of design. The current study presents results on the characterization of the deformation and strain-hardening behavior of chemically tailored Cr-Mn-Ni TRIP steel processed by EBM. Specimens were manufactured with distinct scan strategies, resulting in varying Mn contents, and subsequently tensile tested. Microstructure evolution has been thoroughly examined. Starting from one initial powder, an appropriate scan strategy can be applied to purposefully evaporate Mn and, therefore, adjust strain hardening as well as martensite formation kinetics and ultimate tensile strength. open access Günther, Johannes Lehnert, Robert Wagner, Ruben Burkhardt, Christina Wendler, Marco Volkova, Olena Biermann, Horst Niendorf, Thomas doi:10.1007/s11837-020-04018-6 Elektronenstrahlschmelzen Deformationsverhalten Thermodynamische Stabilität TRIP-Stahl publishedVersion ISSN 1543-1851 Issue 3 JOM 1052-1064 Volume 72 false </resource>
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