The effect of particle shape on mechanical properties of perlite/metal syntactic foam

Taherishargh, M.; Belova, Irina V.; Murch, Graeme E.; Fiedler, Thomas

doi:10.1016/j.jallcom.2016.09.168

Cited by 33 publications

(16 citation statements)

References 20 publications

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“…One recent development is a focus on metallic syntactic foams (MSFs). In these materials, porosity is introduced by combining hollow [5][6][7][8] or inexpensive porous particles [9][10][11][12][13] with a metallic matrix. This approach enables the control of pore geometry and negates the need for costly foaming agents and manufacturing equipment [14].…”

Section: Introductionmentioning

confidence: 99%

Functionally-Graded Metallic Syntactic Foams Produced via Particle Pre-Compaction

Fiedler

Movahedi

York

et al. 2020

Metals

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This paper introduces a novel functionally graded metallic syntactic foam. The investigated foams are manufactured while using infiltration casting where molten A356 aluminum flows into the interstitial voids of packed expanded perlite (EP) particle beds. The partial pre-compaction of particle beds enables the creation of distinct and reproducible density gradients within the syntactic foam. In this study, the samples are produced using four gradually increasing compaction forces and are compared to non-compacted samples. X-ray imaging is used to detect the resulting spatial variation of foam density. In addition, quasi-static compression tests are performed to determine the mechanical foam properties. The results suggest that particle pre-compaction is an efficient tool for tailoring the density and mechanical properties of these novel functionally graded materials.

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Section: Introductionmentioning

confidence: 99%

Functionally-Graded Metallic Syntactic Foams Produced via Particle Pre-Compaction

Fiedler

Movahedi

York

et al. 2020

Metals

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“…In order to control the scatter in the mechanical properties of the MMSFs, the investigations turned to the more precise hollow spheres including pure alumina [33][34][35][36], silicon carbide [37,38] or some kind of metal, mainly steels [39][40][41]. Later, alternative filler materials such as expanded perlite [42][43][44][45][46][47][48][49] or pumice [50] have been investigated in order to decrease the costs of the MMSFs.…”

Section: Introductionmentioning

confidence: 99%

Compressive characteristics of bimodal aluminium matrix syntactic foams

Orbulov

Kemény

Filep

et al. 2019

Composites Part A: Applied Science and Manufacturing

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High performance metal matrix syntactic foams (MMSFs) have been produced by liquid state infiltration of AlSi12 alloy into two loosely packed sets of different nominal diameter (150 μm and 1500 μm) oxide hollow spheres (CHSs) and their mixed packs. The structure of the MMSFs has been studied by X-ray computer tomography and microscopy. The mechanical properties were mapped by compressive tests. The structural investigations showed proper infiltration. In the case of pure small and large CHS filler, the compressive tests revealed high strength levels all over the deformation of the materials up to 50% compressive strain, with the dominance (higher strength values) of the smaller CHSs filled MMSFs. In the case of bimodal CHS filling, the compressive features of the MMSFs have been mixed with two local peaks corresponding to the failure of the smaller and larger CHS filled MMSFs. Rule of mixtures is applicable to estimate the compressive strength.

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“…Besides these, Fe, [23][24][25][26][27][28] Zn, [29][30][31] and Ti [32][33][34] based variations have been produced and reported in the literature. [55][56][57] To decrease this drawback, MMSFs with cheaper filler material, namely expanded perlite [58][59][60][61][62][63][64][65][66][67][68] and pumice [69] were developed. [35] The filler material (or reinforcement in the composite technologist point of view) is usually built up from oxide ceramics or from iron based metals (steels).…”

Section: Introductionmentioning

confidence: 99%

On the Mechanical Properties of Aluminum Matrix Syntactic Foams

Orbulov¹,

Szlancsik²

2018

Adv Eng Mater

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Metal matrix syntactic foams (MMSFs, often referred as composite metal foams (CMFs)) are lightweight materials with high specific strength. MMSFs are on the borderline between metal matrix composites and metal foams. On one hand MMSFs are composites, because they are filled by hollow particles and the particles may add strength to the material. On the other hand, they are foams, because the hollow particles ensure porosity to the material. Among metallic foams, MMSFs exhibit outstanding specific mechanical properties due to the hollow inclusions that are typically made from ceramics or high strength alloys, therefore they can be applied as structural materials. The goal of this paper is to summarize the available data on the mechanical properties of MMSFs with aluminum matrix in order to give a strong support to the design engineers. Since the foams are most frequently loaded in compression, the main part of this paper is organized around the available standard related to the compressive properties of porous materials and metallic foams. The quasi-static results are complemented by properties measured at higher strain rates. Besides this, some insight into the basic fatigue properties as well as into the toughness of MMSFs is also provided.

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The effect of particle shape on mechanical properties of perlite/metal syntactic foam

Cited by 33 publications

References 20 publications

Functionally-Graded Metallic Syntactic Foams Produced via Particle Pre-Compaction

Functionally-Graded Metallic Syntactic Foams Produced via Particle Pre-Compaction

Compressive characteristics of bimodal aluminium matrix syntactic foams

On the Mechanical Properties of Aluminum Matrix Syntactic Foams

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