Funct. Mater. 2026; 32 (1): 41-45.
Determination of Young′s modulus of metal-based composites with cubic lattice
Dnipro University of Technology, av. Dmytra Yavornytskoho 19, 49005 Dnipro, Ukraine
A quantum-mechanical approach in the density functional theory is proposed for calculation of elastic modulus of composite materials. The modulus of elasticity is the ratio of the changes in the total energy and volume of the crystal lattice when the crystal is deformed in a certain crystallographic direction. The elastic moduli of Ni, Cu and composites based on them have been calculated in the [100] and [110] directions. The results are in good agreement with the experimental data obtained by bending the substrate and measuring the mechanical stress arising in the metal film deposited on the substrate.
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