Strut-based lattice structures (SLSs) have been widely used in modern industries including aerospace, automobile and biological implant, due to their unique properties such as lightweight, good energy absorption capability and high specific strength. However, the obtainable mechanical performance is significantly limited by the monotonous strut-based feature without any reinforcement topology. The inherent strengthening mechanisms and atom-scale models in material science may be crucial and valuable to optimize the complex structures with desired properties. Inspired by the solid solution strengthening mechanisms in crystal microstructure, a series of novel crystal-inspired hybrid structures, i.e., the common face-center cubic with Z-strut (FCCZ) structure, the face-center substitutional lattice (FCSL) structure, the edge-center interstitial lattice (ECIL) structure and the vertex-node substitutional lattice (VNSL) structure were designed and fabricated by laser powder bed fusion (LPBF) additive manufacturing in this work. The effect of node location on the LPBF formability, mechanical performance, stress distribution, deformation modes and failure mechanisms of the crystal-inspired components was systematically investigated. The computational fluid dynamics (CFD) method was used to understand the dynamics of molten pool to reveal the formation mechanism and control methods of the dross defect attached to overhanging surfaces. Finite element model (FEM) was established to show the stress distribution and deformation behavior of these hybrid structures during compression. Results showed that the ECIL structure possessed the highest specific energy absorption (SEA) of 13.7 J/g, which increased by 17% compared with the initial FCCZ structure. The crush force efficiency (CFE) of VNSL structure reached the peak value of 66% with a unique axisymmetric shear band during deformation, which increased by 14% compared to the FCCZ structure. The underlying mechanism analysis revealed that the as-designed spherical node could redistribute the stress and the performance of the lattice structures could be manipulated by tailoring the position of the spherical nodes. The present approach suggested that the hardening principles of crystalline materials could inspire the design of novel lattice structures with desired properties.

基于支柱的晶格结构（SLSs）由于其重量轻、能量吸收能力强、比强度高等独特的性能，在航空航天、汽车和生物植入等现代工业中得到了广泛的应用。然而，可获得的机械性能受到单调的基于支柱的特征的显着限制，而没有任何加固拓扑。材料科学中固有的强化机制和原子尺度模型对于优化具有所需特性的复杂结构可能是至关重要和有价值的。受晶体微观结构中固溶强化机制的启发，一系列新颖的晶体启发混合结构，即具有Z-strut（FCCZ）结构的共同面心立方（FCCZ）结构，面心替换晶格（FCSL）结构，在这项工作中，通过激光粉末床融合 (LPBF) 增材制造设计和制造了边缘中心间隙晶格 (ECIL) 结构和顶点节点替换晶格 (VNSL) 结构。系统研究了节点位置对仿晶构件的LPBF成形性、力学性能、应力分布、变形模式和失效机制的影响。采用计算流体动力学（CFD）方法了解熔池动力学，揭示悬垂表面浮渣缺陷的形成机制和控制方法。建立有限元模型 (FEM) 以显示这些混合结构在压缩过程中的应力分布和变形行为。SEA ) 为 13.7 J/g，与初始 FCCZ 结构相比增加了 17%。VNSL结构在变形过程中具有独特的轴对称剪切带，其压碎力效率( CFE )达到峰值66%，与FCCZ结构相比提高了14%。潜在机制分析表明，所设计的球形节点可以重新分配应力，并且可以通过调整球形节点的位置来控制晶格结构的性能。目前的方法表明，结晶材料的硬化原理可以激发具有所需特性的新型晶格结构的设计。