Overall, the research on lattice structures has demonstrated that controlling the local deformation pattern and shear-banding damage mechanism is key to improving mechanical properties. By incorporating multiple crystal interfaces, dislocation-free nanocrystals, and various defect types, researchers have been able to enhance the specific strength and stiffness of lattice structures. The ability to control the evolution of local shear-bandings through the introduction of holes or changes in crystal interface has also significantly improved the platform stress and energy absorption efficiency of these structures. These findings provide a valuable foundation for designing new lattice structures with superior mechanical properties.
Pham et al. [31] designed and fabricated a polycrystalline lattice superstructure composed of a heterogeneous lattice structure with multiple crystal interfaces. It was found that the polycrystalline lattice superstructure formed a failure shear-b...
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