ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Май 21, 2025
Triply periodic minimal surfaces (TPMSs) are currently promising models for novel metamaterials that can be produced by 3D printing. It was previously shown how features of crystal microstructures transferred to architected materials, providing lightweight, damage-tolerant designs with desired strength and toughness (Pham, M.-S.; Liu, C.; Todd, I.; Lertthanasarn, J. Damage-Tolerant Architected Materials https://doi.org/10.1038/s41586-018-0850-3). This work uses a simple method produce TMPS architectures via polycrystal-like approach. We show among incoherent, coherent polycrystalline-like cellular those twin grain boundaries, only the latter provide effectively increased isotropy (up 3.61 times), while maintaining mechanical properties. have found face-centered cubic (FCC) packing in is superior Young's shear moduli compared random arrangement, boundary strengthening essential toughness. demonstrate our crystal-inspired methodology design exceeding diamond-type structure moduli, isotropy, Extreme twinning diamond metamaterial has similar fullerite strength, lattice. line existing reports on outperforming at microscale (Kvashnina, Y. A.; Kvashnin, A. G.; Chernozatonskii, L. Sorokin, P. B. Fullerite-Based Nanocomposites Ultrahigh Stiffness. Theoretical Investigation. Carbon N Y 2017, 115, 546-549. https://doi.org/10.1016/j.carbon.2017.01.028). then studied hypervelocity ballistic impact bullet twinned microscopic scale applying molecular dynamics (MD). The appeared outperform singular crystalline Our results would contribute designing high-performance both macro- miscroscale.
Язык: Английский