Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion
This study provides a novel approach to fabricating Al/C composites using laser powder bed fusion (LPBF) for a wide range of structural applications utilizing Al-matrix composites in additive manufacturing. We investigated the effects of LPBF on the fabrication of aluminum/multiwalled carbon nanotub...
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MDPI AG
2020-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/18/3927 |
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| author | Eo Ryeong Lee Se Eun Shin Naoki Takata Makoto Kobashi Masaki Kato |
| author_facet | Eo Ryeong Lee Se Eun Shin Naoki Takata Makoto Kobashi Masaki Kato |
| author_sort | Eo Ryeong Lee |
| collection | DOAJ |
| description | This study provides a novel approach to fabricating Al/C composites using laser powder bed fusion (LPBF) for a wide range of structural applications utilizing Al-matrix composites in additive manufacturing. We investigated the effects of LPBF on the fabrication of aluminum/multiwalled carbon nanotube (Al/MWCNT) composites under 25 different conditions, using varying laser power levels and scan speeds. The microstructures and mechanical properties of the specimens, such as elastic modulus and nanohardness, were analyzed, and trends were identified. We observed favorable sintering behavior under laser conditions with low energy density, which verified the suitability of Al/MWCNT composites for a fabrication process using LPBF. The size and number of pores increased in specimens produced under high energy density conditions, suggesting that they are more influenced by laser power than scan speed. Similarly, the elastic modulus of a specimen was also more affected by laser power than scan speed. In contrast, scan speed had a greater influence on the final nanohardness. Depending on the laser power used, we observed a difference in the crystallographic orientation of the specimens by a laser power during LPBF. When energy density is high, texture development of all samples tended to be more pronounced. |
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| format | Article |
| id | doaj.art-e6b2c92f6e0a416cbb51ac8cf21aa218 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T16:33:22Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-e6b2c92f6e0a416cbb51ac8cf21aa2182023-11-20T12:41:34ZengMDPI AGMaterials1996-19442020-09-011318392710.3390/ma13183927Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed FusionEo Ryeong Lee0Se Eun Shin1Naoki Takata2Makoto Kobashi3Masaki Kato4Department of Materials Science and Metallurgical Engineering, Sunchon National University, Suncheon, Jeollanam-do 57922, KoreaDepartment of Materials Science and Metallurgical Engineering, Sunchon National University, Suncheon, Jeollanam-do 57922, KoreaDepartment of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanDepartment of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanAichi Center for Industry and Science Technology, 1267-1 Akiai, Yakusa-cho, Toyota 470-0356, JapanThis study provides a novel approach to fabricating Al/C composites using laser powder bed fusion (LPBF) for a wide range of structural applications utilizing Al-matrix composites in additive manufacturing. We investigated the effects of LPBF on the fabrication of aluminum/multiwalled carbon nanotube (Al/MWCNT) composites under 25 different conditions, using varying laser power levels and scan speeds. The microstructures and mechanical properties of the specimens, such as elastic modulus and nanohardness, were analyzed, and trends were identified. We observed favorable sintering behavior under laser conditions with low energy density, which verified the suitability of Al/MWCNT composites for a fabrication process using LPBF. The size and number of pores increased in specimens produced under high energy density conditions, suggesting that they are more influenced by laser power than scan speed. Similarly, the elastic modulus of a specimen was also more affected by laser power than scan speed. In contrast, scan speed had a greater influence on the final nanohardness. Depending on the laser power used, we observed a difference in the crystallographic orientation of the specimens by a laser power during LPBF. When energy density is high, texture development of all samples tended to be more pronounced.https://www.mdpi.com/1996-1944/13/18/3927metal–matrix compositeball millinglaser powder bed fusionmicrostructuresnanoindentation |
| spellingShingle | Eo Ryeong Lee Se Eun Shin Naoki Takata Makoto Kobashi Masaki Kato Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion Materials metal–matrix composite ball milling laser powder bed fusion microstructures nanoindentation |
| title | Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion |
| title_full | Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion |
| title_fullStr | Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion |
| title_full_unstemmed | Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion |
| title_short | Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion |
| title_sort | manufacturing aluminum multiwalled carbon nanotube composites via laser powder bed fusion |
| topic | metal–matrix composite ball milling laser powder bed fusion microstructures nanoindentation |
| url | https://www.mdpi.com/1996-1944/13/18/3927 |
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