The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites
In this study, the synthesis-structure-property relationship of graphene-reinforced Al matrix nanocomposites was investigated. The Al-Li-GNPs nanocomposite was synthesized to attain both high strength and good ductility. The incorporation of GNPs as a reinforcement in the Al-based matrix provided a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-11-01
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| Series: | Nanocomposites |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/20550324.2024.2319383 |
| _version_ | 1826966255679045632 |
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| author | Sara I. Ahmad Atef Zekri Khaled M. Youssef |
| author_facet | Sara I. Ahmad Atef Zekri Khaled M. Youssef |
| author_sort | Sara I. Ahmad |
| collection | DOAJ |
| description | In this study, the synthesis-structure-property relationship of graphene-reinforced Al matrix nanocomposites was investigated. The Al-Li-GNPs nanocomposite was synthesized to attain both high strength and good ductility. The incorporation of GNPs as a reinforcement in the Al-based matrix provided a nanocomposite structure for an integrated strengthening effect. To promote plasticity and maintain good ductility, the nanocrystalline Al matrix was alloyed with Li to reduce its stacking fault energy and promote additional deformation mechanisms. The compressive yield strength (CYS) increased from 88 MPa for the starting Al to 403 MPa for the Al-Li-GNPs nanocomposites with 1.0 wt% GNPs. Fracture analysis indicated that the synthesized nanocomposite exhibited a ductile nature and significant plastic deformation. Based on microscopic analysis, the enhanced strength of the Al-Li-GNPs nanocomposite was attributed to grain refinement, load transfer, and strain hardening. The good ductility, on the other hand, was attributed to dislocation slipping, the formation of stacking faults, and twinning. |
| first_indexed | 2024-03-07T21:57:53Z |
| format | Article |
| id | doaj.art-1fbdd64fa70a40c4906d4f4f5ae6a8e4 |
| institution | Directory Open Access Journal |
| issn | 2055-0324 2055-0332 |
| language | English |
| last_indexed | 2025-02-18T03:32:02Z |
| publishDate | 2024-11-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Nanocomposites |
| spelling | doaj.art-1fbdd64fa70a40c4906d4f4f5ae6a8e42024-11-22T14:00:52ZengTaylor & Francis GroupNanocomposites2055-03242055-03322024-11-01101789410.1080/20550324.2024.2319383The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocompositesSara I. Ahmad0Atef Zekri1Khaled M. Youssef2Materials Science and Technology Graduate Program, Department of Physics and Materials Science, Qatar University, Doha, QatarQatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Doha, QatarMaterials Science and Technology Graduate Program, Department of Physics and Materials Science, Qatar University, Doha, QatarIn this study, the synthesis-structure-property relationship of graphene-reinforced Al matrix nanocomposites was investigated. The Al-Li-GNPs nanocomposite was synthesized to attain both high strength and good ductility. The incorporation of GNPs as a reinforcement in the Al-based matrix provided a nanocomposite structure for an integrated strengthening effect. To promote plasticity and maintain good ductility, the nanocrystalline Al matrix was alloyed with Li to reduce its stacking fault energy and promote additional deformation mechanisms. The compressive yield strength (CYS) increased from 88 MPa for the starting Al to 403 MPa for the Al-Li-GNPs nanocomposites with 1.0 wt% GNPs. Fracture analysis indicated that the synthesized nanocomposite exhibited a ductile nature and significant plastic deformation. Based on microscopic analysis, the enhanced strength of the Al-Li-GNPs nanocomposite was attributed to grain refinement, load transfer, and strain hardening. The good ductility, on the other hand, was attributed to dislocation slipping, the formation of stacking faults, and twinning.https://www.tandfonline.com/doi/10.1080/20550324.2024.2319383Aluminumcompressiongraphenemechanical propertiesnanocompositesplasticity |
| spellingShingle | Sara I. Ahmad Atef Zekri Khaled M. Youssef The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites Nanocomposites Aluminum compression graphene mechanical properties nanocomposites plasticity |
| title | The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites |
| title_full | The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites |
| title_fullStr | The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites |
| title_full_unstemmed | The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites |
| title_short | The role of twinning and stacking fault-induced plasticity on the mechanical properties of aluminum-lithium-graphene nanocomposites |
| title_sort | role of twinning and stacking fault induced plasticity on the mechanical properties of aluminum lithium graphene nanocomposites |
| topic | Aluminum compression graphene mechanical properties nanocomposites plasticity |
| url | https://www.tandfonline.com/doi/10.1080/20550324.2024.2319383 |
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