In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting
We have investigated the basic characteristics of C/Al composites prepared in-process via selective laser melting (SLM) using a mixed powder of pure aluminum and short carbon fiber. Initially, the relationship between the relative density of the SLM composites and laser scan conditions was systemati...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/5/619 |
| _version_ | 1797568415334924288 |
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| author | Takahiro Kimura Takayuki Nakamoto Takeshi Suyama Takao Miki |
| author_facet | Takahiro Kimura Takayuki Nakamoto Takeshi Suyama Takao Miki |
| author_sort | Takahiro Kimura |
| collection | DOAJ |
| description | We have investigated the basic characteristics of C/Al composites prepared in-process via selective laser melting (SLM) using a mixed powder of pure aluminum and short carbon fiber. Initially, the relationship between the relative density of the SLM composites and laser scan conditions was systematically investigated. The SLM composites were densified by applying laser scan conditions with high input energy density (>100 J/mm<sup>3</sup>). The densified SLM composite showed excellent hardness together with low thermal conductivity, due to the generation of an Al<sub>4</sub>C<sub>3</sub> phase and increased solid-solution carbon in the α-Al matrix via the reaction between aluminum and carbon during laser irradiation. This reaction could be inhibited in SLM composites fabricated from another mixed powder of copper-plated carbon fiber and pure aluminum powder since laser absorptivity significantly decreased due to the high reflectivity of the copper plate on the carbon fiber. By investigating the Cu plated C/Al SLM composites, we demonstrated that the thermal management material having anisotropic thermal conductivity could be fabricated by controlling the carbon dispersion by using a unidirectional laser scanning pattern. |
| first_indexed | 2024-03-10T19:55:43Z |
| format | Article |
| id | doaj.art-a25160a55cb94f7abc849d818f2e0660 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T19:55:43Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-a25160a55cb94f7abc849d818f2e06602023-11-19T23:58:42ZengMDPI AGMetals2075-47012020-05-0110561910.3390/met10050619In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser MeltingTakahiro Kimura0Takayuki Nakamoto1Takeshi Suyama2Takao Miki3Osaka Research Institute of Industrial Science and Technology, 2-7-1 Ayumino, Izumi-city, Osaka 594-1157, JapanOsaka Research Institute of Industrial Science and Technology, 2-7-1 Ayumino, Izumi-city, Osaka 594-1157, JapanOsaka Research Institute of Industrial Science and Technology, 2-7-1 Ayumino, Izumi-city, Osaka 594-1157, JapanOsaka Research Institute of Industrial Science and Technology, 2-7-1 Ayumino, Izumi-city, Osaka 594-1157, JapanWe have investigated the basic characteristics of C/Al composites prepared in-process via selective laser melting (SLM) using a mixed powder of pure aluminum and short carbon fiber. Initially, the relationship between the relative density of the SLM composites and laser scan conditions was systematically investigated. The SLM composites were densified by applying laser scan conditions with high input energy density (>100 J/mm<sup>3</sup>). The densified SLM composite showed excellent hardness together with low thermal conductivity, due to the generation of an Al<sub>4</sub>C<sub>3</sub> phase and increased solid-solution carbon in the α-Al matrix via the reaction between aluminum and carbon during laser irradiation. This reaction could be inhibited in SLM composites fabricated from another mixed powder of copper-plated carbon fiber and pure aluminum powder since laser absorptivity significantly decreased due to the high reflectivity of the copper plate on the carbon fiber. By investigating the Cu plated C/Al SLM composites, we demonstrated that the thermal management material having anisotropic thermal conductivity could be fabricated by controlling the carbon dispersion by using a unidirectional laser scanning pattern.https://www.mdpi.com/2075-4701/10/5/619selective laser melting (SLM)metal matrix composite (MMC)aluminum alloycarbon fibermicrostructure |
| spellingShingle | Takahiro Kimura Takayuki Nakamoto Takeshi Suyama Takao Miki In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting Metals selective laser melting (SLM) metal matrix composite (MMC) aluminum alloy carbon fiber microstructure |
| title | In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting |
| title_full | In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting |
| title_fullStr | In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting |
| title_full_unstemmed | In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting |
| title_short | In-Process Fabrication of Carbon-Dispersed Aluminum Matrix Composite Using Selective Laser Melting |
| title_sort | in process fabrication of carbon dispersed aluminum matrix composite using selective laser melting |
| topic | selective laser melting (SLM) metal matrix composite (MMC) aluminum alloy carbon fiber microstructure |
| url | https://www.mdpi.com/2075-4701/10/5/619 |
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