On the compressive properties of aluminum and magnesium syntactic foams: Experiment and simulation

Kádár, Csilla; Kubelka, Pierre; Szlancsik, Attila

doi:10.1016/j.mtcomm.2023.106060

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…Figure 14. (a) Typical compressive engineering stress-strain curves of F0.8-750 syntactic foams in as-fabricated and heat-treated conditions, and compression test sample (b) before and (c) after compression test.Kadar et al[4] and Orbulov et al[60] reported similar results for CP-Al-hollow Al 2 O 3 based spheres and Al99.5-LECA and AlSi9MgMn-LECA syntactic foams, respectively.Previous research confirms that compressive strength as well as the slope of the plateau region of Al-Cu alloy syntactic foams in both annealed and precipitation hardened conditions are greater than those in Al-Si alloy syntactic foams due to superior work hardening and Al 2 Cu precipitation in the former[28].The compressed sample shown in Figure14csuggests a layer-by-layer mode of deformation, as observed in other types of metal syntactic foams[12]. The uniform deformation of the syntactic foams due to uniformity of the metallic struts, as well as the relative uniformity of the size and distribution of the EPPs used are evident from this figure.…”

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confidence: 60%

“…Metal syntactic foams are a group of advanced metallic foams which mostly use either hollow or porous filler particles within a metallic matrix [1][2][3]. Different types of filler particles including ceramic hollow particles [4,5], metallic hollow particles [6], ceramic porous particles like light expanded clay aggregate (LECA) [7] and pumice [8], fly ash [9], expanded glass [10], and expanded perlite (EP) [11][12][13], as well as hybrid placeholder particles [14], in situ fillers [15], and gradient filler particles [7,16] have been used to fabricate metal syntactic foams.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam

Niroumand,

Jazini Dorcheh

2023

Metals

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The present research concerns fabrication of Al-4.3wt.%Cu metal syntactic foams using expanded perlite particles (EPPs). A gas pressure infiltration technique was employed to fabricate the aluminium syntactic foams under different infiltration temperatures and pressures. Ambient air pressure and 750 °C were identified as the favoured processing conditions for full infiltration of the melt. The average density and EP volume percentage of the fabricated foams were measured to be about 1.55 g/cm3 and 50.3%, respectively. Melt infiltration is believed to be mainly controlled by the breakage of the aluminium oxide layer on the melt surface and melt viscosity. Preferential infiltration of the melt between the mould wall and the EP particles bed complemented by radial melt infiltration toward the centre of the samples was identified. The effects of EP particles on growth of the nucleated primary α-aluminium phase were discussed. XRD and EDS analyses suggested some chemical reactions at the interface of EPPs with the molten aluminium. T6 heat treatment in the ambient atmosphere improved the average compressive tensile strength, plateau stress, and absorption capacity of the syntactic foams by more than 100%. Uniform deformation and similar densification strains (about 40%) of the as-fabricated and heat-treated syntactic foams during the compression test suggested uniform distribution of EP particles and metallic struts in the aluminium alloy matrix.

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confidence: 60%

Section: Introductionmentioning

confidence: 99%

Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam

Niroumand,

Jazini Dorcheh

2023

Metals

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“…Usually, there is a large difference between the melting points of the mold used and the matrix material, so there should not be any significant problems during casting; however, proper pressure and pre-heating must be applied. Metal foams are generally characterized by their energy-absorbing properties; currently, compression testing is the only internationally standard measurement [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Bending Properties of Ex situ Functional Metal Foams

Pados,

Kemény,

Károly

et al. 2024

Period. Polytech. Mech. Eng.

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In each industry, compromises have to be made when choosing materials. Lower-density materials have a significant advantage in the automotive sector, especially due to rising fuel prices, since weight reduction can lower overall fuel consumption. The advantageous properties of metal foams, such as low density, high specific strength, and excellent energy absorption, should be researched and exploited in as many areas and ways as possible. This research aims to perform and evaluate the bending tests of ex situ functional metal foams: aluminum alloy matrix (AlSi7Mg) was used, which was filled with Ø2.5–3.0 mm lightweight expanded clay aggregate particles and surrounded by thin-walled aluminum tubes (AlMgSi0.5) with a wall thickness of 2 mm and an outer diameter of Ø32 mm. Empty tubes, foam-filled tubes (with and without structural epoxy adhesive) and metal matrix syntactic foams were compared based on their flexural strength and energy absorption capacity. Quasi-static three-point bend tests were carried out up to 25 mm deflection. The foam-filled tubes with epoxy adhesive showed an average of 6% increase in flexural strength compared to the foam-filled tubes without adhesive and a 145% increase compared to the metal matrix syntactic foams.

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Nowadays, metal foams and composite metal foams are more and more widely researched, [1][2][3][4][5] and metal foam-filled tubes (FFTs) have also become an increasingly researched area amongst metal foams, as these structures are more resistant to various types of loads than metal foams without a sandwich structure or surrounding elements. The properties of cellular structures can be further increased by filling them into dense metallic sections or using hollow cast pieces supported by the foam filling from the inside.

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confidence: 99%

The Effects of Various Adhesives on Multiple Types of Quasi‐Static Mechanical Properties of Rectangular and Square Aluminum Hollow Sections Filled with Composite Metal Foam Cores

Kemény,

Pados,

Károly

et al. 2024

Adv Eng Mater

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For composite metal foam structures to be used as load‐bearing and energy‐absorbing elements, comprehensive testing should be done. Therefore, an extensive characterization of foam‐filled structures by various load types, such as axial and lateral compression, as well as three‐point bending, is carried out, aiming to differentiate the behavior of various cross‐sectional geometry foam‐filled hollow sections and the application of a tough epoxy adhesive and a ductile polysiloxane adhesive. Applying the epoxy adhesive improves the overall energy absorption by 10 % during axial compression compared to the sum of the foam and empty hollow section. The application of the polysiloxane adhesive over the epoxy one increases the deflection at failure during three‐point bending by an average of 58 %. The deformation and strength during axial compression and three‐point bending are hollow section dominated, while the foam core dominates the deformation and the strength during lateral compression for both produced composite foam‐filled hollow sections with epoxy and polysiloxane adhesive bonding.This article is protected by copyright. All rights reserved.

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On the compressive properties of aluminum and magnesium syntactic foams: Experiment and simulation

Cited by 7 publications

References 29 publications

Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam

Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam

Investigation of the Bending Properties of Ex situ Functional Metal Foams

The Effects of Various Adhesives on Multiple Types of Quasi‐Static Mechanical Properties of Rectangular and Square Aluminum Hollow Sections Filled with Composite Metal Foam Cores

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