Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment
Additive manufacturing (AM) has provided new possibilities for improving the grain boundary properties of metallic components. However, effectively modifying the microstructure, particularly the grain boundary properties, of laser powder bed fusion (L-PBF) components remains a challenge. Post-proces...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/9/1314 |
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| author | Mohsen Taheri Andani Veera Sundararaghavan Amit Misra |
| author_facet | Mohsen Taheri Andani Veera Sundararaghavan Amit Misra |
| author_sort | Mohsen Taheri Andani |
| collection | DOAJ |
| description | Additive manufacturing (AM) has provided new possibilities for improving the grain boundary properties of metallic components. However, effectively modifying the microstructure, particularly the grain boundary properties, of laser powder bed fusion (L-PBF) components remains a challenge. Post-processing methods have shown some success in adjusting grain boundary angles, but they have limitations when it comes to complex geometries and internal features. In this study, we propose an innovative in situ heat treatment to control the grain boundary properties of L-PBF components. A model is proposed to predict the thermal cycle at a single point, and it is validated through experiments on 2507 super duplex steel and 316L austenitic steel samples. The results demonstrate that, by applying controlled in situ heat treatment, the dynamic recovery processes can be influenced, and thereby the grain boundary properties of the manufactured parts can be controlled. This proposed method improves our understanding of the impact of in situ heat treatment on grain boundary properties and offers potential for designing and fabricating high-performance L-PBF components. The findings from this study lay the groundwork for the further exploration of grain boundary engineering in metallic components using L-PBF. By leveraging in situ heat treatment, future research can open up new avenues in additive manufacturing, facilitating the production of advanced and high-quality metallic components. |
| first_indexed | 2024-03-10T22:54:07Z |
| format | Article |
| id | doaj.art-54845279be8a498385f103fd4a58b479 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T22:54:07Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-54845279be8a498385f103fd4a58b4792023-11-19T10:09:00ZengMDPI AGCrystals2073-43522023-08-01139131410.3390/cryst13091314Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat TreatmentMohsen Taheri Andani0Veera Sundararaghavan1Amit Misra2Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USADepartment of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109, USADepartment of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USAAdditive manufacturing (AM) has provided new possibilities for improving the grain boundary properties of metallic components. However, effectively modifying the microstructure, particularly the grain boundary properties, of laser powder bed fusion (L-PBF) components remains a challenge. Post-processing methods have shown some success in adjusting grain boundary angles, but they have limitations when it comes to complex geometries and internal features. In this study, we propose an innovative in situ heat treatment to control the grain boundary properties of L-PBF components. A model is proposed to predict the thermal cycle at a single point, and it is validated through experiments on 2507 super duplex steel and 316L austenitic steel samples. The results demonstrate that, by applying controlled in situ heat treatment, the dynamic recovery processes can be influenced, and thereby the grain boundary properties of the manufactured parts can be controlled. This proposed method improves our understanding of the impact of in situ heat treatment on grain boundary properties and offers potential for designing and fabricating high-performance L-PBF components. The findings from this study lay the groundwork for the further exploration of grain boundary engineering in metallic components using L-PBF. By leveraging in situ heat treatment, future research can open up new avenues in additive manufacturing, facilitating the production of advanced and high-quality metallic components.https://www.mdpi.com/2073-4352/13/9/1314grain boundary engineeringin situ heat treatmentdynamic recovery |
| spellingShingle | Mohsen Taheri Andani Veera Sundararaghavan Amit Misra Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment Crystals grain boundary engineering in situ heat treatment dynamic recovery |
| title | Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment |
| title_full | Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment |
| title_fullStr | Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment |
| title_full_unstemmed | Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment |
| title_short | Novel Approach to Grain Boundary Modification in Stainless and Duplex Steel L-PBF Components through In Situ Heat Treatment |
| title_sort | novel approach to grain boundary modification in stainless and duplex steel l pbf components through in situ heat treatment |
| topic | grain boundary engineering in situ heat treatment dynamic recovery |
| url | https://www.mdpi.com/2073-4352/13/9/1314 |
| work_keys_str_mv | AT mohsentaheriandani novelapproachtograinboundarymodificationinstainlessandduplexsteellpbfcomponentsthroughinsituheattreatment AT veerasundararaghavan novelapproachtograinboundarymodificationinstainlessandduplexsteellpbfcomponentsthroughinsituheattreatment AT amitmisra novelapproachtograinboundarymodificationinstainlessandduplexsteellpbfcomponentsthroughinsituheattreatment |