Effect of Silicon Content on Mechanical Properties and Progressive Collapse Behavior of Closed-cell Aluminum Foams

Farahani, Mohammad Reza; Elahi, S. Hossein; Ashtiani, H. R. Rezaei

doi:10.1007/s12666-021-02390-8

Cited by 5 publications

(1 citation statement)

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“…Researchers have conducted many studies to improve the mechanical attributes of existing foams, producing novel classes of high-strength hybrid composite foams to enhance their applications. Different types of reinforcement like metallic, ceramic [18], and carbonaceous [19]were widely used for enhancing the performance of aluminium composites foam. For the development of hybrid composite foams, alloy composition has a significant impact on both foamability and mechanical properties of metal foams, both of which have an impressive effect on energy absorption and compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Aluminium AA7075 Hybrid Composite Foams (AHCFs) Using SiC and TiB2 Reinforcement

Singh

Balaguru

2023

Inter Metalcast

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In this study AA7075/SiC/TiB2 closed-cell Aluminium hybrid composite foam (AHCFs) with different densities was fabricated by top-loaded bottom pouring stir casting technique. This technique uses oyster-shell powders (CaCO3 2.5 wt. % of composite with 60 μm size) as blowing agents and no viscosity-enhancing ingredient. The silicon carbide (SiC 0, 3, 6, 9, and 12 wt. % with 25 μm) and titanium di-boride (TiB2 3 wt. % with particle size 15 μm) are used as primary and secondary reinforcement agents. It has been noted that the addition of TiB2 and SiC enhanced the mechanical properties (modulus of elasticity, yield strength, and plateau strength) of AHCFs. The energy absorption capacity of AHCFs increases with the addition of SiC up to 3 wt. % and a further increase in SiC content leads to the reduction. It is observed that density and cell wall thickness increases with increasing the wt. % of SiC and Cell size and porosity decrease with an increase in wt. %. of reinforcement. It is also noted that Stirring temperature also strongly influenced the microstructural properties of AHCFs, and 750 0 C of stirring temperature is sufficient for aluminium foaming.

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Section: Introductionmentioning

confidence: 99%