Molecular dynamics simulations on the mechanical properties of gyroidal bicontinuous Cu/Ni nanocomposites

Li, Jiejie; Li, Jie; Zhao, Qinyu; Xia, Re

doi:10.1016/j.jmrt.2022.04.142

Cited by 9 publications

(2 citation statements)

References 35 publications

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“…The indirect strengthening could not be ignored. [40,49] The contribution of indirect strengthening could be calculated in four parts as follows when dislocations were involved in the matrix. 1) Orowan strengthening, which was caused by the diamond and WC, as shown in Equation ( 4).…”

Section: Strengthening Mechanismmentioning

confidence: 99%

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High‐Strength Wear‐Resistant Cu/Tungsten Carbide/Diamond Composites Fabricated by Powder Metallurgy

Zhang,

Lei,

Gao

et al. 2024

Adv Eng Mater

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Copper‐based diamond composites are widely used for thermal management and wear‐resistant materials. In this work, Cu/diamond, Cu/WC/diamond, and Cu‐0.92Cr/WC/diamond composites were fabricated by high‐energy ball milling and rapid hot‐pressing sintering. Physical characteristics, compressive strength, and tribological properties of the studied composites were investigated. The compressive strength of Cu/7wt.%WC/diamond composites was 102% higher than the Cu/diamond composites, reaching 415 MPa. Compression fractures extended from the interface due to compression cracks, consistent with the compression curves from molecular dynamics simulations. The crack propagated from the interface during the compression experiment, which was consistent with the result of molecular dynamics simulation. The Cu/7wt.%WC/diamond composites exhibited a wear rate of 0.6×10‐6 mm3/(N·m) and a friction coefficient of 0.37. at 50 N. The addition of WC and diamond improves the compressive strength and wear resistant. These findings were helpful in the development of copper composites with high compression strength and wear resistant.This article is protected by copyright. All rights reserved.

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Section: Strengthening Mechanismmentioning

confidence: 99%

“…[37][38][39] The micromechanical and irradiation behaviors of copper matrix composites have been explored in earlier studies. [40,41] From a microscopic point of view, the plastic deformation behavior is influenced by dislocation slip and plugging. The visual dislocations in MD simulation provide a new method to explain microscopic deformation mechanisms.…”

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confidence: 99%