The current study examines the out-of-plane compressive response of ceramic/aluminum hybrid lattice materials with an anodic alumina outer shell and an aluminum alloy core. The combination of increasing truss angle and oxide coating thickness results in a six-fold increase in compressive strength, two-fold increase in densification strain, twelve-fold increase in energy absorption per volume, and twenty-fold increase in energy absorption per mass. Such improvements are caused by the change in failure mode from mid-strut buckling to a hinge kinking mode as the oxide coating thickness increases. Microscopy and analytical modelling reveal that kink formation is most likely initiated by aluminum shear band formation followed by oxide rotation and fracture (analogous to micro-kinking in fiber composites). In terms of energy absorption, the best performing lattice materials in the current study were on par with the best available cellular materials in existing literature.

当前的研究检查了具有阳极氧化铝外壳和铝合金芯的陶瓷/铝混合晶格材料的面外压缩响应。桁架角度和氧化物涂层厚度的增加共同导致抗压强度增加6倍，致密化应变增加2倍，每体积能量吸收增加12倍，每质量能量吸收增加20倍。这种改进是由于随着氧化物涂层厚度的增加，失效模式从中撑屈曲转变为铰链扭结模式而引起的。显微镜和分析模型表明，扭结的形成很可能是由铝剪切带的形成，随后的氧化物旋转和断裂（类似于纤维复合材料的微扭结）引起的。在能量吸收方面，