In this study, Mg₁₇Al₁₂/Al ordered structure composites were prepared by infiltrating the ordered porous aluminum with the intermetallic compound Mg₁₇Al₁₂ under gravity condition. Their compressive properties and energy absorption behavior were investigated by quasi-static compression tests. The results showed that Mg₁₇Al₁₂/Al ordered structure composites exhibited distinctly different compressive stress-strain curves with a prominent linear elastic stage and had an advantage over ordered porous aluminum and Mg₁₇Al₁₂/Al composites with irregular structures on mechanical properties. Moreover, Mg₁₇Al₁₂/Al composites with strengthened truss structure showed better compressive properties than Mg₁₇Al₁₂/Al composites with basic truss structure. The ordered porous aluminum that acted as matrix skeleton showed great plasticity and ductility while the intermetallic compound Mg₁₇Al₁₂ as filler exhibited high compressive strength and obvious brittleness. The improvement of mechanical properties of Mg₁₇Al₁₂/Al ordered structure composites was attributed to the ordered composite structure and the distinct mechanical property of co-continuous intermetallic compound Mg₁₇Al₁₂ and pure Al.

在这项研究中，通过在重力条件下用金属间化合物Mg ₁₇ Al ₁₂渗透有序多孔铝来制备Mg ₁₇ Al ₁₂ / Al有序结构复合材料。通过准静态压缩试验研究了它们的压缩性能和能量吸收行为。结果表明，Mg ₁₇ Al ₁₂ / Al有序结构复合材料表现出明显不同的压缩应力-应变曲线，具有显着的线性弹性阶段，并且在力学性能方面优于具有规则结构的有序多孔铝和Mg ₁₇ Al ₁₂ / Al复合材料。此外，Mg ₁₇ Al₁₂ / Al复合材料具有强化桁架结构显示出更好的压缩性能除Mg ₁₇的Al ₁₂ / Al复合材料具有基本桁架结构。用作基体骨架的有序多孔铝具有很好的可塑性和延展性，而金属间化合物Mg ₁₇ Al ₁₂作为填充剂则具有较高的抗压强度和明显的脆性。Mg ₁₇ Al ₁₂ / Al有序结构复合材料力学性能的提高归因于有序复合结构以及共连续金属间化合物Mg ₁₇ Al ₁₂和纯Al的独特力学性能。