Datum
2023-08-29Schlagwort
600 Technik Direct Energy DepositionRapid Prototyping <Fertigung>OberflächenbehandlungNicht rostender StahlMikrostrukturMaterialermüdungMetadata
Zur Langanzeige
Aufsatz
Influence of Surface Mechanical Attrition Treatment (SMAT) on Microstructure, Tensile and Low-Cycle Fatigue Behavior of Additively Manufactured Stainless Steel 316L
Zusammenfassung
Direct Energy Deposition (DED), as one common type of additive manufacturing, is capable of fabricating metallic components close to net-shape with complex geometry. Surface mechanical attrition treatment (SMAT) is an advanced surface treatment technology which is able to yield a nanostructured surface layer characterized by compressive residual stresses and work hardening, thereby improving the fatigue performances of metallic specimens. In the present study, stainless steel 316L specimens were fabricated by DED and subsequently surface treated by SMAT. Both uniaxial tensile tests and uniaxial tension-compression low-cycle fatigue tests were conducted for as-built and SMAT processed specimens. The microstructure of both conditions was characterized by roughness and hardness measurements, scanning electron microscopy and transmission electron microscopy. After SMAT, nanocrystallites and microtwins were found in the top surface layer. These microstructural features contribute to superior properties of the treated surfaces. Finally, it can be concluded that the mechanical performance of additively manufactured steel under static and fatigue loading can be improved by the SMAT process.
Zitierform
In: Metals Volume 12 / Issue 9 (2023-08-29) eissn:2075-4701Zitieren
@article{doi:10.17170/kobra-202311159008,
author={Wegener, Thomas and Wu, Tao and Sun, Fei and Wang, Chong and Lu, Jian and Niendorf, Thomas},
title={Influence of Surface Mechanical Attrition Treatment (SMAT) on Microstructure, Tensile and Low-Cycle Fatigue Behavior of Additively Manufactured Stainless Steel 316L},
journal={Metals},
year={2023}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2023$n2023 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/15178 3000 Wegener, Thomas 3010 Wu, Tao 3010 Sun, Fei 3010 Wang, Chong 3010 Lu, Jian 3010 Niendorf, Thomas 4000 Influence of Surface Mechanical Attrition Treatment (SMAT) on Microstructure, Tensile and Low-Cycle Fatigue Behavior of Additively Manufactured Stainless Steel 316L / Wegener, Thomas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/15178=x R 4204 \$dAufsatz 4170 5550 {{Direct Energy Deposition}} 5550 {{Rapid Prototyping <Fertigung>}} 5550 {{Oberflächenbehandlung}} 5550 {{Nicht rostender Stahl}} 5550 {{Mikrostruktur}} 5550 {{Materialermüdung}} 7136 ##0##http://hdl.handle.net/123456789/15178
2023-11-15T08:11:13Z 2023-11-15T08:11:13Z 2023-08-29 doi:10.17170/kobra-202311159008 http://hdl.handle.net/123456789/15178 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ additive manufacturing direct energy deposition surface treatment stainless steel microstructure low-cycle fatigue 600 Influence of Surface Mechanical Attrition Treatment (SMAT) on Microstructure, Tensile and Low-Cycle Fatigue Behavior of Additively Manufactured Stainless Steel 316L Aufsatz Direct Energy Deposition (DED), as one common type of additive manufacturing, is capable of fabricating metallic components close to net-shape with complex geometry. Surface mechanical attrition treatment (SMAT) is an advanced surface treatment technology which is able to yield a nanostructured surface layer characterized by compressive residual stresses and work hardening, thereby improving the fatigue performances of metallic specimens. In the present study, stainless steel 316L specimens were fabricated by DED and subsequently surface treated by SMAT. Both uniaxial tensile tests and uniaxial tension-compression low-cycle fatigue tests were conducted for as-built and SMAT processed specimens. The microstructure of both conditions was characterized by roughness and hardness measurements, scanning electron microscopy and transmission electron microscopy. After SMAT, nanocrystallites and microtwins were found in the top surface layer. These microstructural features contribute to superior properties of the treated surfaces. Finally, it can be concluded that the mechanical performance of additively manufactured steel under static and fatigue loading can be improved by the SMAT process. open access Wegener, Thomas Wu, Tao Sun, Fei Wang, Chong Lu, Jian Niendorf, Thomas 20 Seiten doi:10.3390/met12091425 Direct Energy Deposition Rapid Prototyping <Fertigung> Oberflächenbehandlung Nicht rostender Stahl Mikrostruktur Materialermüdung publishedVersion eissn:2075-4701 Issue 9 Metals Volume 12 false 1425
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