| Mechanical Behavior and Microstructural Evolution of Graphene-Reinforced Aluminum Composites Fabricated via Cold Accumulative Roll Bonding (ARB) |
| کد مقاله : 1223-ICME |
| نویسندگان |
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سید احسان افتخاری شهری *1، علی طالبی2، امین ثقفی3، یدالله یعقوبینژاد4 1گروه مهندسی مکانیک- دانشگاه صنعتی بیرجند 2M.Sc. Student, Department of Mechanical Engineering, Birjand University of Technology 3Faculty Member, Department of Mechanical Engineering, Birjand University of Technology 4Faculty Member, Department of Materials Engineering, Birjand University of Technology |
| چکیده مقاله |
| This study presents a detailed investigation on the fabrication of aluminum 1020 matrix composites reinforced with graphene-based materials using the cold accumulative roll bonding (ARB) process. The main focus of this research is to explore the complex interactions between the type of reinforcement, the evolution of microstructure during the ARB process, and the resulting mechanical performance of the composites. Two different forms of graphene-based reinforcements, graphene oxide (GO) and ball-milled aluminum/graphene (Al/Gr), were incorporated into the aluminum matrix to assess their effects on strength, ductility, and energy absorption. Comprehensive tensile tests were conducted to measure mechanical properties, while field-emission scanning electron microscopy (FE-SEM) was employed to characterize the microstructural features, including grain refinement, reinforcement dispersion, interfacial bonding, and the formation of nanoscale structures. The results indicated that uniform dispersion of GO sheets significantly improved grain refinement, enhanced crack-bridging, and increased energy absorption, thereby promoting toughness. In contrast, Al/Gr reinforcements achieved the highest ultimate tensile strength due to the presence of metallic coating and strong interfacial bonding with the aluminum matrix. A functional balance between reinforcement types was observed: Al/Al–Gr composites maximized strength, while Al–Gr (GO) composites favored toughness. Overall, the findings demonstrate that the cold ARB process is an effective method for producing aluminum matrix composites with well-controlled microstructures and a favorable combination of mechanical properties. |
| کلیدواژه ها |
| Aluminum matrix composites (MMCs), Graphene oxide, Accumulative roll bonding, Mechanical properties, Microstructure. |
| وضعیت: پذیرفته شده برای ارسال فایل های ارائه پوستر |
