Pham and colleagues (2018) developed a polycrystalline lattice superstructure that contained multiple crystal interfaces, which exhibited failure shear-banding symmetrical to the twin boundary. This behavior is similar to sliding behavior observed in metallurgy. Lu and co-workers (2019) investigated the hardening principle of inclusions that hinder dislocation movement and compared it with the strengthening mechanism of dual-phase lattice structures. The controllability of the shear-banding path enables the control of deformation patterns and damage mechanisms in lattice superstructures. Researchers have improved the stress platform and energy absorption efficiency of lattice structures by altering crystal interfaces to suppress local shear-banding propagation distance. Wu et al. (2016) found that dislocation-free nanocrystals added to an amorphous matrix inhibited local shear-banding transfer and significantly improved material properties. Additionally, lattice structure design has been inspired by defect characteristics of microstructures. For example, Vangelatos et al. (2017) enhanced specific strength and stiffness of lattices by utilizing contact between adjacent member elements, while Bhuwal et al. (2019) controlled local shear-bandings’ evolution by introducing holes of varying sizes, spatial orientations, and topological distribution into periodic lattice structures. Moreover, multi-scale lattice structure calculation and analysis models of various defect types have been established 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.
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 hardeni...
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