EFFECT OF GRAPHENE ON STRENGTHENING MECHANISM OF CuTa/GRAPHENE NANOCOMPOSITES

Thi-Quy Vu; Anh-Tung Luu; Quang-Hai Tran; Dinh-Quan Doan

Thi-Quy Vu Hung Yen University of Technology and Education
Anh-Tung Luu Thai Nguyen University of Technology
Quang-Hai Tran Thai Nguyen University of Technology
Dinh-Quan Doan Hung Yen University of Technology and Education

Keywords: CuTa/Graphene, tension, composite, mechanical property, MD simulation

Abstract

Tensile behavior of CuTa/Graphene nanocomposites through molecular dynamics simulations is revealed in this study. The influence of graphene on the mechanical performance of the amorphous CuTa matrix is analyzed by varying the graphene volume fraction. The results indicate that the incorporation of graphene significantly enhances tensile strength, Young’s modulus, and failure strain, contributing to improved material toughness and stiffness. The increased mechanical stability of the composites demonstrates graphene’s effectiveness in reinforcing amorphous alloy. Shear strain distribution analysis reveals that deformation primarily originates at the graphene-amorphous interface, leading to the formation of shear transformation zones. As the graphene content increases, the composite exhibits greater resistance to plastic deformation, with stress concentration localized around the graphene layers. The redistribution of stress and strain near the graphene layers indicates their critical role in strengthening the amorphous matrix. Additionally, atomic displacement analysis shows that graphene modifies the deformation pathways, leading to shear sliding and an altered strain distribution.

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