The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys
Graphene, a remarkable two-dimensional material, enhances the mechanical properties of high-entropy alloys as a reinforcing phase. This study investigated the influence of vacancy defects in graphene on the strengthening effect of FeNiCrCoCu high-entropy alloy through molecular dynamics simulations....
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MDPI AG
2025-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/15/1177 |
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| author | Xianhe Zhang Hongyun Wang Chunpei Zhang Cun Zhang Xuyao Zhang |
| author_facet | Xianhe Zhang Hongyun Wang Chunpei Zhang Cun Zhang Xuyao Zhang |
| author_sort | Xianhe Zhang |
| collection | DOAJ |
| description | Graphene, a remarkable two-dimensional material, enhances the mechanical properties of high-entropy alloys as a reinforcing phase. This study investigated the influence of vacancy defects in graphene on the strengthening effect of FeNiCrCoCu high-entropy alloy through molecular dynamics simulations. The findings reveal that vacancy defects diminish graphene’s strength, resulting in its premature failure. In tensile tests, graphene with defects lowers the yield stress of the composite, yet it retains the ability to impede dislocations. Conversely, graphene exhibits a more pronounced strengthening effect during compression. Specifically, when the deletion of C atoms is less than 1%, the impact is negligible; between 1% and 6%, the strengthening effect diminishes; and when it surpasses 6%, the strengthening effect virtually ceases to exist. This research offers a theoretical foundation for optimizing graphene-reinforced composites. |
| format | Article |
| id | doaj-art-173641d6930b45d898d78de17587373f |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-173641d6930b45d898d78de17587373f2025-08-20T04:00:54ZengMDPI AGNanomaterials2079-49912025-07-011515117710.3390/nano15151177The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy AlloysXianhe Zhang0Hongyun Wang1Chunpei Zhang2Cun Zhang3Xuyao Zhang4Hebei Research Center of the Basic Discipline Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaHebei Key Laboratory of Mechanics of Intelligent Materials and Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaHebei Key Laboratory of Mechanics of Intelligent Materials and Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaHebei Research Center of the Basic Discipline Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaState Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, ChinaGraphene, a remarkable two-dimensional material, enhances the mechanical properties of high-entropy alloys as a reinforcing phase. This study investigated the influence of vacancy defects in graphene on the strengthening effect of FeNiCrCoCu high-entropy alloy through molecular dynamics simulations. The findings reveal that vacancy defects diminish graphene’s strength, resulting in its premature failure. In tensile tests, graphene with defects lowers the yield stress of the composite, yet it retains the ability to impede dislocations. Conversely, graphene exhibits a more pronounced strengthening effect during compression. Specifically, when the deletion of C atoms is less than 1%, the impact is negligible; between 1% and 6%, the strengthening effect diminishes; and when it surpasses 6%, the strengthening effect virtually ceases to exist. This research offers a theoretical foundation for optimizing graphene-reinforced composites.https://www.mdpi.com/2079-4991/15/15/1177graphenehigh-entropy alloysvacancy defectsmolecular dynamicsdislocations |
| spellingShingle | Xianhe Zhang Hongyun Wang Chunpei Zhang Cun Zhang Xuyao Zhang The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys Nanomaterials graphene high-entropy alloys vacancy defects molecular dynamics dislocations |
| title | The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys |
| title_full | The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys |
| title_fullStr | The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys |
| title_full_unstemmed | The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys |
| title_short | The Influence of the Defect Rate of Graphene on Its Reinforcing Capability Within High-Entropy Alloys |
| title_sort | influence of the defect rate of graphene on its reinforcing capability within high entropy alloys |
| topic | graphene high-entropy alloys vacancy defects molecular dynamics dislocations |
| url | https://www.mdpi.com/2079-4991/15/15/1177 |
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