Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy
7075Al alloy is the preferred material for lightweight automotive applications, but the existing problem is that it is difficult to combine high strength and high toughness. This paper presents our research aimed at obtaining high strength and high toughness materials by adding a nano-phase to reali...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/24/5808 |
| _version_ | 1797544120295620608 |
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| author | Jinfeng Leng Yunfan Dong Binghui Ren Ran Wang Xinying Teng |
| author_facet | Jinfeng Leng Yunfan Dong Binghui Ren Ran Wang Xinying Teng |
| author_sort | Jinfeng Leng |
| collection | DOAJ |
| description | 7075Al alloy is the preferred material for lightweight automotive applications, but the existing problem is that it is difficult to combine high strength and high toughness. This paper presents our research aimed at obtaining high strength and high toughness materials by adding a nano-phase to realize microstructure refinement. Graphene nanoplates (GNP)/7075Al composites and 7075Al alloy were prepared by a stirring casting method in the present study. In comparison to 7075Al, the tensile strength of GNP/7075Al composites was increased from 572 MPa to 632 MPa while maintaining good uniform elongation of 8% to 10%. The increased strength behavior of GNP/7075Al composites while maintaining the plasticity is discussed in terms of grain refinement and dislocation evolution by analyzing the composite microstructure and quantitatively analyzing the contributions of grain boundary strengthening, solid solution strengthening, precipitation strengthening and dislocation strengthening. GNP’s strengthening of GNP/7075Al composites is mainly attributed to the refinement of grain size and the increase of dislocation density. |
| first_indexed | 2024-03-10T13:54:55Z |
| format | Article |
| id | doaj.art-12f3d955a50648ea9db9c50e7f87418a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T13:54:55Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-12f3d955a50648ea9db9c50e7f87418a2023-11-21T01:41:36ZengMDPI AGMaterials1996-19442020-12-011324580810.3390/ma13245808Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al AlloyJinfeng Leng0Yunfan Dong1Binghui Ren2Ran Wang3Xinying Teng4School of Materials Science and Engineering, University of Jinan, No. 336, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, No. 336, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, No. 336, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, No. 336, Jinan 250022, ChinaSchool of Materials Science and Engineering, University of Jinan, No. 336, Jinan 250022, China7075Al alloy is the preferred material for lightweight automotive applications, but the existing problem is that it is difficult to combine high strength and high toughness. This paper presents our research aimed at obtaining high strength and high toughness materials by adding a nano-phase to realize microstructure refinement. Graphene nanoplates (GNP)/7075Al composites and 7075Al alloy were prepared by a stirring casting method in the present study. In comparison to 7075Al, the tensile strength of GNP/7075Al composites was increased from 572 MPa to 632 MPa while maintaining good uniform elongation of 8% to 10%. The increased strength behavior of GNP/7075Al composites while maintaining the plasticity is discussed in terms of grain refinement and dislocation evolution by analyzing the composite microstructure and quantitatively analyzing the contributions of grain boundary strengthening, solid solution strengthening, precipitation strengthening and dislocation strengthening. GNP’s strengthening of GNP/7075Al composites is mainly attributed to the refinement of grain size and the increase of dislocation density.https://www.mdpi.com/1996-1944/13/24/5808graphene nanoplates7075Alstirring castingstrengthening mechanisms |
| spellingShingle | Jinfeng Leng Yunfan Dong Binghui Ren Ran Wang Xinying Teng Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy Materials graphene nanoplates 7075Al stirring casting strengthening mechanisms |
| title | Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy |
| title_full | Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy |
| title_fullStr | Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy |
| title_full_unstemmed | Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy |
| title_short | Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy |
| title_sort | effects of graphene nanoplates on the mechanical behavior and strengthening mechanism of 7075al alloy |
| topic | graphene nanoplates 7075Al stirring casting strengthening mechanisms |
| url | https://www.mdpi.com/1996-1944/13/24/5808 |
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