This work investigated the mechanical properties of CoCrNi medium-entropy alloy (MEA) nanowires under uniaxial tensile loading along three crystallographic orientations [100], [110] and [111]. The face-centered cubic (FCC) single-crystal CoCrNi nanowires exhibit pronounced anisotropy Molecular dynamics simulations were employed to provide atomic-level insights into the plastic deformation mechanism. The surface effect causes dislocations to nucleate at the free surface and slip inward. The temperature effect was also considered. Under identical geometric configurations, crystal orientations, and temperatures, interatomic interactions govern key mechanical properties such as Young's modulus and yield strength. Simulation results reveal a strong linear correlation between the average atomic force and mechanical performance across eight representative FCC metallic nanowires (Al, Au, Ag, Cu, Ni, Al19Mg alloy, FeCoCrCuNi high-entropy alloy (HEA), and CoCrNi MEA). This study delivers novel insights into the mechanical behavior of metallic nanowires and offers guidance for the rational design of alloy nanowires.
Nanoscale structures have drawn significant attention due to their unique and interesting properties. At nano size, surface stress and crystal orientation are the key factors in defining the properties. In this context, mechanical properties of an aluminium nanowire, subjected to uniaxial tensile loading have been inve...
S. Barik, Bedamati Majhi, S. S. Sarangi· Journal of Metastable and Na...· 0 citations
The tensile deformation behavior of a single-crystalline multi-principal alloy system was systematically investigated at room temperature along three crystallographic orientations [111], [110], and [100] to elucidate the orientation dependence of the fracture surface behavior. Previous studies demonstrated that the ini...
S. Picak· İmalat Teknolojileri ve Uygu...· 1 citation
Nanocrystalline Al-Zn-Mg alloys are pivotal for next-generation aerospace and automotive applications that require superior strength-to-weight ratios. However, optimizing their mechanical properties at the atomic scale remains a challenge because classical strengthening theories break down. This study employs molecular...
Kun Gao, Long-Zhou Huang, Jia-Ni Yan et al.· Small· 0 citations
This study investigates the evolution of microstructural, mechanical, and transport properties in AZ31 magnesium alloy surface composites reinforced with Ti2AlC MAX-phase particles at volume fractions of 6, 9, and 12 vol.%, which were fabricated by solid-state friction stir processing (FSP). In contrast to conventional...
E. Moustafa, Ahmad Bamasag, Abudellah Alqarni et al.· Journal of Composites Scienc...· 0 citations
Recent research has shown that Cu atoms can incorporate into the L12−Al3Sc precipitates in Al-Cu-Sc alloys, forming Al3−xCuxSc compounds that serve as effective hydrogen traps. Nevertheless, the Cu-induced modifications to the stability and mechanical properties of these precipitates have not yet been systematically qu...
Tong-Hui Yao, Wen Sun· Crystals· 0 citations
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