The objective of the study is to investigate the strengthening mechanism of embedded meta-precipitates in the design of architected metamaterials. Four precipitate-type architected metamaterials are designed and prepared by fused deposition modelling (FDM). The difference of mechanical properties and deformation mode of these structures is analyzed. The strengthening effect of the introduced meta-precipitates is then compared with Orowan bypass strengthening mechanism. The similarities and discrepancies of metallurgical hardening principles and that found in architected metamaterials are established. It is found that due to the introduction of embedded meta-precipitates, the deformation of the structure changes significantly from diagonal crushing to a meander route, thus improves the mechanical properties and energy absorption abilities. The hindering effect and the influence of volume fraction of meta-precipitates is similar to Orowan bypass mechanism.

中文翻译：

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通过Orowan旁路类似机制增强的新型沉淀类型建筑超材料

这项研究的目的是研究在建筑超材料的设计中嵌入超沉淀的强化机理。通过熔融沉积建模（FDM）设计和制备了四种沉淀物类型的超材料。分析了这些结构的力学性能和变形模式的差异。然后将引入的偏析物的强化效果与Orowan旁路强化机理进行比较。建立了冶金硬化原理与在建筑超材料中发现的相似性和差异。结果发现，由于引入了嵌入的偏析物，结构的变形从对角破碎到曲折路径发生了显着变化，从而提高了机械性能和能量吸收能力。