Pham et al. [31] created a polycrystalline lattice superstructure with various crystal interfaces that exhibited failure shear-banding symmetrical to the twin boundary, similar to sliding behavior in metallurgy. Lu et al. [32] compared the hardening principle of inclusions that hinder dislocation movement with the strengthening mechanism of dual phase lattice structures. The deformation pattern and damage mechanism of lattice superstructures can be controlled due to their controllability of the shear-banding path. Researchers [17][33] improved the stress platform and energy absorption efficiency of lattice superstructures by changing the crystal interface to suppress local shear-banding propagation distance. Wu et al. [34] found that dislocation-free nanocrystals added to an amorphous matrix inhibited local shear-banding transfer and significantly enhanced material properties. Furthermore, defect characteristics of microstructures inspire lattice structure design. Vangelatos et al. [35][36] enhanced specific strength and stiffness of lattices by utilizing contact between adjacent member elements. Bhuwal et al. [37] controlled local shear-bandings’ evolution by introducing holes of varying sizes, spatial orientations, and topological distribution into periodic lattice structures. Ref [38][39] established multi-scale lattice structure calculation and analysis models of various defect types to study the influence of spatial structural defects on mechanical properties. These typical failure mechanisms derived from microstructure deformation behaviors are crucial for designing new lattice structures with excellent mechanical properties.
Please rephrase“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...
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