Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions
Abstract To enhance the mechanical properties and electrical conductivity of Al-Cu-Mg-based composites, aluminum matrix composites containing scandium (Sc) and graphene nanoplatelets (GNPs) were fabricated by means of stepwise ball milling, vacuum hot pressing sintering, and hot rolling techniques....
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-86744-y |
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| author | Li Yuan Fengguo Liu Chun Wu Changsheng Lou |
| author_facet | Li Yuan Fengguo Liu Chun Wu Changsheng Lou |
| author_sort | Li Yuan |
| collection | DOAJ |
| description | Abstract To enhance the mechanical properties and electrical conductivity of Al-Cu-Mg-based composites, aluminum matrix composites containing scandium (Sc) and graphene nanoplatelets (GNPs) were fabricated by means of stepwise ball milling, vacuum hot pressing sintering, and hot rolling techniques. When Sc and GNPs were incorporated at concentrations of 0.1 wt% and 0.2 wt% respectively, the resultant composites demonstrated a maximum tensile strength of 326.81 MPa, an elongation of 3.2%, an electrical conductivity of 46.95% IACS, and a hardness of 112.96 HV. In comparison with the 2024 aluminum alloy matrix, enhancements of 39%, 255%, 51% and 51.21% were witnessed in tensile strength, elongation, electrical conductivity, and hardness respectively. These improvements can be primarily ascribed to the addition of Sc, which facilitated the precipitation of solute atoms and enhanced the interfacial bonding between the GNPs and the matrix, as well as the remarkable heterogeneous layered microstructure induced by the incorporation of GNPs. This study presents a feasible approach to concurrently enhance the strength and electrical conductivity of composites through the combined addition of Sc and GNPs. |
| format | Article |
| id | doaj-art-817cb1eda21744bb8375948cfb3eeebc |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-817cb1eda21744bb8375948cfb3eeebc2025-01-19T12:19:20ZengNature PortfolioScientific Reports2045-23222025-01-0115111810.1038/s41598-025-86744-yImproving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additionsLi Yuan0Fengguo Liu1Chun Wu2Changsheng Lou3School of Materials Science and Engineering, Shenyang Ligong UniversitySchool of Materials Science and Engineering, Shenyang Ligong UniversitySchool of Materials Science and Engineering, Liaoning Technical UniversitySchool of Materials Science and Engineering, Shenyang Ligong UniversityAbstract To enhance the mechanical properties and electrical conductivity of Al-Cu-Mg-based composites, aluminum matrix composites containing scandium (Sc) and graphene nanoplatelets (GNPs) were fabricated by means of stepwise ball milling, vacuum hot pressing sintering, and hot rolling techniques. When Sc and GNPs were incorporated at concentrations of 0.1 wt% and 0.2 wt% respectively, the resultant composites demonstrated a maximum tensile strength of 326.81 MPa, an elongation of 3.2%, an electrical conductivity of 46.95% IACS, and a hardness of 112.96 HV. In comparison with the 2024 aluminum alloy matrix, enhancements of 39%, 255%, 51% and 51.21% were witnessed in tensile strength, elongation, electrical conductivity, and hardness respectively. These improvements can be primarily ascribed to the addition of Sc, which facilitated the precipitation of solute atoms and enhanced the interfacial bonding between the GNPs and the matrix, as well as the remarkable heterogeneous layered microstructure induced by the incorporation of GNPs. This study presents a feasible approach to concurrently enhance the strength and electrical conductivity of composites through the combined addition of Sc and GNPs.https://doi.org/10.1038/s41598-025-86744-yAl-Cu-Mg-based compositesScandium (Sc)Graphene nanoplatelets (GNPs)Powder metallurgyMechanical propertiesElectrical conductivity |
| spellingShingle | Li Yuan Fengguo Liu Chun Wu Changsheng Lou Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions Scientific Reports Al-Cu-Mg-based composites Scandium (Sc) Graphene nanoplatelets (GNPs) Powder metallurgy Mechanical properties Electrical conductivity |
| title | Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions |
| title_full | Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions |
| title_fullStr | Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions |
| title_full_unstemmed | Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions |
| title_short | Improving mechanical properties and electrical conductivity of Al-Cu-Mg matrix composites by GNPs and sc additions |
| title_sort | improving mechanical properties and electrical conductivity of al cu mg matrix composites by gnps and sc additions |
| topic | Al-Cu-Mg-based composites Scandium (Sc) Graphene nanoplatelets (GNPs) Powder metallurgy Mechanical properties Electrical conductivity |
| url | https://doi.org/10.1038/s41598-025-86744-y |
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