Fabrication of sustainable closed-cell aluminium foams using recycled fly ash and eggshell powder

Thulasikanth, Vaddi; Padmanabhan, R.

doi:10.1016/j.mtcomm.2023.107302

Cited by 2 publications

(1 citation statement)

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“…To explore the relationship between the pore structure and mechanical properties of the AFS, three AFS samples with different pore structures were selected for the three-point bending test. According to Li et al [43] and Zu et al [30], the failure modes of AFS subjected to three-point bending include indentation, core shear, and face yield. The failure modes are affected by several factors [40], such as the materials used for the cover sheet and foam core, the pore structure of the foam core, the density of the AFS, etc.…”

Section: Three-bending Testmentioning

confidence: 99%

Pore Structure and Deformation Correlation of an Aluminum Foam Sandwich Subject to Three-Point Bending

Lu,

Jing,

Zhou

et al. 2024

Materials

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An Al-Si matrix foam sandwich (AFS) with 6063 Al alloy cover sheets was fabricated by hot rolling combined with melt foaming. A foamable AlSiMg1/SiCp matrix precursor was prepared by the melting route. Hot rolling at 480 °C was carried out to obtain a mechanical bonding interface between the cover sheet and the foamable precursor. Meanwhile, the pore structure of the AFS was deeply affected by the foaming temperature and foaming time during the foaming process. Different pore growth mechanics of the crack-like pore disappearance mechanism (CDM) and pore active expansion mechanism (AEM) were concluded based on the pressure difference in pores inside and outside. Three bending tests were applied to three types of AFSs with different pore structures to evaluate the relation between pore structures and AFS mechanical properties. The bending property of the AFS with fewer layers of pores is like that of a dense material. The bending property of the AFS with a pore size in the range of 0~1 mm presents a typical sandwich shear failure mode. The AFS with a uniform pore structure, in which the shapes of the pores are predominately polygons and the pore diameter is concentrated in the range of 0.5~3 mm, processes a good energy absorption capacity, and the bending stress–strain curve fluctuates greatly after the first stress drop.

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Section: Three-bending Testmentioning

confidence: 99%