Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing
Abstract Bimetallic wire arc additive manufacturing (AM) has traditionally been limited to depositions characterized by single planar interfaces. This study demonstrates a more complex radial interface concept, with in situ mechanical interlocking and as-built properties suggesting a prestressed com...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-06-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-39230-w |
| _version_ | 1797795558868385792 |
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| author | Lile Squires Ethan Roberts Amit Bandyopadhyay |
| author_facet | Lile Squires Ethan Roberts Amit Bandyopadhyay |
| author_sort | Lile Squires |
| collection | DOAJ |
| description | Abstract Bimetallic wire arc additive manufacturing (AM) has traditionally been limited to depositions characterized by single planar interfaces. This study demonstrates a more complex radial interface concept, with in situ mechanical interlocking and as-built properties suggesting a prestressed compressive effect. A 308 L stainless core is surrounded by a mild steel casing, incrementally maintaining the interface throughout the Z-direction. A small difference in the thermal expansion coefficient between these steels creates residual stresses at their interface. X-ray diffraction analysis confirms phase purity and microstructural characterization reveals columnar grain growth independent of layer transitions. Hardness values are consistent with thermal dissipation characteristics, and the compressive strength of the bimetallic structures shows a 33% to 42% improvement over monolithic controls. Our results demonstrate that biomimetic radial bimetallic variation is feasible with improved mechanical response over monolithic compositions, providing a basis for advanced structural design and implementation using arc-based metal AM. |
| first_indexed | 2024-03-13T03:19:47Z |
| format | Article |
| id | doaj.art-109d6a5ca7fb4f90bf3c6491a43c7a9c |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-13T03:19:47Z |
| publishDate | 2023-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-109d6a5ca7fb4f90bf3c6491a43c7a9c2023-06-25T11:22:35ZengNature PortfolioNature Communications2041-17232023-06-0114111110.1038/s41467-023-39230-wRadial bimetallic structures via wire arc directed energy deposition-based additive manufacturingLile Squires0Ethan Roberts1Amit Bandyopadhyay2W. M. Keck Biomedical Materials Research Lab, School of Mechanical and Materials Engineering, Washington State UniversityW. M. Keck Biomedical Materials Research Lab, School of Mechanical and Materials Engineering, Washington State UniversityW. M. Keck Biomedical Materials Research Lab, School of Mechanical and Materials Engineering, Washington State UniversityAbstract Bimetallic wire arc additive manufacturing (AM) has traditionally been limited to depositions characterized by single planar interfaces. This study demonstrates a more complex radial interface concept, with in situ mechanical interlocking and as-built properties suggesting a prestressed compressive effect. A 308 L stainless core is surrounded by a mild steel casing, incrementally maintaining the interface throughout the Z-direction. A small difference in the thermal expansion coefficient between these steels creates residual stresses at their interface. X-ray diffraction analysis confirms phase purity and microstructural characterization reveals columnar grain growth independent of layer transitions. Hardness values are consistent with thermal dissipation characteristics, and the compressive strength of the bimetallic structures shows a 33% to 42% improvement over monolithic controls. Our results demonstrate that biomimetic radial bimetallic variation is feasible with improved mechanical response over monolithic compositions, providing a basis for advanced structural design and implementation using arc-based metal AM.https://doi.org/10.1038/s41467-023-39230-w |
| spellingShingle | Lile Squires Ethan Roberts Amit Bandyopadhyay Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing Nature Communications |
| title | Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing |
| title_full | Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing |
| title_fullStr | Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing |
| title_full_unstemmed | Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing |
| title_short | Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing |
| title_sort | radial bimetallic structures via wire arc directed energy deposition based additive manufacturing |
| url | https://doi.org/10.1038/s41467-023-39230-w |
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