Effect of defects on fracture and mechanical properties in Cu/Zr nanolayers

Void dominated fracture and plastic localization in Cu/Al laminated composites revealed by molecular dynamics simulations

Cu/Al laminated composites are promising for lightweight conductive and thermal-management applications, but tensile reliability is strongly affected by deformation incompatibility and damage localization near heterogeneous interfaces. Molecular dynamics simulations were performed to reveal the void-dominated fracture...

The role of weak interfaces in the tensile deformation and fracture of particle-filled polymers studied by phase-field model

Weak particle-matrix interfaces play a critical role in the tensile fracture of particle-filled polymer composites, but how they govern progressive debonding, fracture localization, and the resulting changes in macroscopic mechanical properties remains insufficiently understood. In this study, a cohesive-zone phase-fie...

Anisotropic fracture mechanisms and crack-mediated mechanical degradation in trigraphene nanosheets: A molecular dynamics study

This study investigates the anisotropic fracture mechanisms and mechanical degradation of trigraphene nanosheets (TNS) with central cracks using molecular dynamics (MD) simulations. The elastic modulus, ultimate stress, fracture strain, toughness, and stress intensity factor (Kc) are systematically evaluated as functio...

In-situ study on the microstructural evolution and strengthening mechanism of Fe35Co30Ni30Ta2Mo2Cu1 alloy under laser shock peening

Effect of TiB 2 Content on Crack Suppression Mechanisms and Microstructural Evolution of IN939 Superalloy Under Pulsed Laser Processing

High‐γ′ nickel‐based superalloy IN939 is highly susceptible to cracks during laser additive manufacturing, severely limiting its engineering applications. In this work, TiB 2 /IN939 composites were fabricated via pulsed‐wave (PW) laser processing by incorporating TiB 2 particles, and their effects on microstructu...

Influence of dislocation density on the tribological response in oxides: case study on SrTiO3

Most ceramics suffer from brittle surface damage and cracking when small particles slide across the surface under low load. Microscratching tests are a useful technique to mimic this loading scenario while retaining the material's deformation history; however, the impact of pre-seeded dislocations, which can significan...