Datum
2022Autor
Sajadifar, Seyed VahidHosseinzadeh, AliRichter, JuliaKrochmal, MarcelWegener, ThomasBolender, ArtjomHeidarzadeh, AkbarNiendorf, ThomasYapici, Guney GuvenSchlagwort
620 Ingenieurwissenschaften Selektives LaserschmelzenRührreibschweißenRapid Prototyping <Fertigung>MikrostrukturFestigkeitMechanische EigenschaftBruchMetadata
Zur Langanzeige
Aufsatz
On the Friction Stir Processing of Additive-Manufactured 316L Stainless Steel
Zusammenfassung
The novel combination of friction stir processing (FSP) and additive manufacturing (AM) is studied herein. Laser-based powder bed fusion of metals (PBF-LB/M) is used to establish 316 L stainless steel with a bimodal microstructure. Upon FSP, the as-built bimodal microstructure with an average grain size of 179 μm is transformed into the unimodal microstructure containing ultrafine grains with an average grain size of 1.2 μm. Results obtained by mechanical testing reveal that after FSP; the hardness, the yield point, and the ultimate strength of additively manufactured 316 L are enhanced by 45%, 77%, and 62%, respectively. Microstructure assessment reveals that such a unique improvement in the mechanical properties is due to considerable structural refinement leading to grain boundary strengthening. Energy-dispersive X-Ray diffraction analysis reveals that phase transformation does not occur upon FSP. Fracture analysis further indicates that severe plastic deformation (SPD) during FSP can promote the transformation of coarse voids to fine voids and, hence, densification of as-built parts.
Zitierform
In: Advanced Engineering Materials Volume 24 / Issue 10 (2022) eissn:1527-2648Zusätzliche Informationen
This is the peer reviewed version of the following article: On the Friction Stir Processing of Additive‐Manufactured 316L Stainless Steel. Advanced Engineering Materials 24, 10 p2200384 (2022), which has been published in final form at https://doi.org/10.1002/adem.202200384.Zitieren
@article{doi:10.17170/kobra-202312229267,
author={Sajadifar, Seyed Vahid and Hosseinzadeh, Ali and Richter, Julia and Krochmal, Marcel and Wegener, Thomas and Bolender, Artjom and Heidarzadeh, Akbar and Niendorf, Thomas and Yapici, Guney Guven},
title={On the Friction Stir Processing of Additive-Manufactured 316L Stainless Steel},
journal={Advanced Engineering Materials},
year={2022}
}
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2023-12-22T09:09:27Z 2023-12-22T09:09:27Z 2022 doi:10.17170/kobra-202312229267 http://hdl.handle.net/123456789/15317 This is the peer reviewed version of the following article: On the Friction Stir Processing of Additive‐Manufactured 316L Stainless Steel. Advanced Engineering Materials 24, 10 p2200384 (2022), which has been published in final form at https://doi.org/10.1002/adem.202200384. eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ laser powder bed fusion friction stir processing microstructure strength mechanical properties fracture 620 On the Friction Stir Processing of Additive-Manufactured 316L Stainless Steel Aufsatz The novel combination of friction stir processing (FSP) and additive manufacturing (AM) is studied herein. Laser-based powder bed fusion of metals (PBF-LB/M) is used to establish 316 L stainless steel with a bimodal microstructure. Upon FSP, the as-built bimodal microstructure with an average grain size of 179 μm is transformed into the unimodal microstructure containing ultrafine grains with an average grain size of 1.2 μm. Results obtained by mechanical testing reveal that after FSP; the hardness, the yield point, and the ultimate strength of additively manufactured 316 L are enhanced by 45%, 77%, and 62%, respectively. Microstructure assessment reveals that such a unique improvement in the mechanical properties is due to considerable structural refinement leading to grain boundary strengthening. Energy-dispersive X-Ray diffraction analysis reveals that phase transformation does not occur upon FSP. Fracture analysis further indicates that severe plastic deformation (SPD) during FSP can promote the transformation of coarse voids to fine voids and, hence, densification of as-built parts. open access Sajadifar, Seyed Vahid Hosseinzadeh, Ali Richter, Julia Krochmal, Marcel Wegener, Thomas Bolender, Artjom Heidarzadeh, Akbar Niendorf, Thomas Yapici, Guney Guven doi:10.1002/adem.202200384 Selektives Laserschmelzen Rührreibschweißen Rapid Prototyping <Fertigung> Mikrostruktur Festigkeit Mechanische Eigenschaft Bruch acceptedVersion eissn:1527-2648 Issue 10 Advanced Engineering Materials Volume 24 false 2200384
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