The compression‐compression fatigue performance of carbon nanotube (CNT) reinforced aluminium matrix composite foams (AMCFs) were investigated. The ε‐N curves of AMCFs are composed of three stages (the elastic, strain hardening, and rapid accumulation stages), while the fatigue strain of AMCFs accumulates very rapidly in stage III compared with Al foams. The fatigue strength of AMCFs with CNT contents of 2.0, 2.5, and 3.0 wt% increases by 6%, 44%, and 102% than Al foams, respectively. Different from Al foams' deformation of layer‐by‐layer, the main failure modes of AMCFs are the brittle fracture and collapse of pores within significant shear deformation bands under fatigue loading. The uniform distribution of CNTs and good interfacial bonding of CNTs and Al matrix is the important factor for the improvement of fatigue properties of AMCFs.

中文翻译：

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碳纳米管增强铝基复合泡沫的压缩压缩疲劳性能

研究了碳纳米管（CNT）增强的铝基复合泡沫（AMCF）的压缩-压缩疲劳性能。的ε - ñAMCF的曲线由三个阶段组成（弹性，应变硬化和快速积累阶段），而与Al泡沫相比，AMCF的疲劳应变在第三阶段积累得非常快。CNT含量为2.0、2.5和3.0 wt％的AMCF的疲劳强度分别比Al泡沫提高6％，44％和102％。与铝泡沫的逐层变形不同，AMCF的主要破坏模式是在疲劳载荷作用下，在明显的剪切变形带内的脆性断裂和孔隙塌陷。碳纳米管的均匀分布以及碳纳米管与铝基体的良好界面结合是改善AMCFs疲劳性能的重要因素。