On the mechanical properties of heat-treated expanded perlite–aluminium syntactic foam

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

doi:10.1016/j.matdes.2014.06.019

Cited by 68 publications

(57 citation statements)

References 38 publications

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“…The matrix material is usually an aluminium alloy (light and low cost), but nowadays high strength iron based matrices are also investigated [2][3][4][5][6][7][8][9][10][11]. As filler material, commercially available mixed-oxide ceramic [12][13][14][15], metallic [12] or SiC [16,17] hollow spheres are frequently applied, however Taherishargh et al have been made efforts for the application of low cost perlite filler as well [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Compressive behaviour of aluminium matrix syntactic foams reinforced by iron hollow spheres

et al. 2015

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HighlightsLow pressure infiltration is suitable to produce MMSFs with hollow iron spheres.The MMSFs showed plastic yielding and long, slowly ascending plateau region.The matrix and the heat treatment strongly influence the properties of the MMSFs.The full-scale FEM model gives excellent agreement compared to the measured values. Highlights (for review) *Manuscript Click here to view linked References AbstractAluminium alloy syntactic foams reinforced with iron hollow spheres were produced by low pressure, liquid phase inert gas infiltration technique. Four Al alloys (Al99.5, AlSi12, AlMgSi1 and AlCu5) and Globomet grade iron hollow spheres were used as matrix and reinforcing material, respectively. The produced composite blocks were characterised according to the ruling standard for compression of cellular materials in order to ensure full comparability. The compressive test results showed plastic yielding and a long, slowly ascending plateau region that ensures large energy absorption capability. The proper selection of the matrix material and the applied heat treatment allows for a wide range of tailoring of the mechanical properties. For design purposes, the full-scale finite element method (FEM) model of the investigated foams was created and tested on Al99.5 matrix foams. The FEM results showed very good agreement with the measured values (typically within 5% in the characteristic properties and within 10% for the whole compression curve).

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Section: Introductionmentioning

confidence: 99%

Compressive behaviour of aluminium matrix syntactic foams reinforced by iron hollow spheres

et al. 2015

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“…The plateau stress of the foams, i.e. the arithmetic mean of the compressive stresses between 20% and 40% strain, was determined for each sample based on the findings of previous studies on the compressive properties of foams with similar density [33,34]. fatigue tests was set to ݂ = 10 ‫ݖܪ‬ and the load form followed a sine curve (see Fig.…”

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confidence: 99%

Fatigue properties of expanded perlite/aluminum syntactic foams

Taherishargh

Katona

Fiedler

et al. 2016

Journal of Composite Materials

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Abstract:The main purpose of this paper is to present the basic fatigue properties of metal matrix syntactic foams (P-MSFs). The investigated syntactic foams consisting of expanded perlite and A356 aluminum matrix were produced using an inert gas pressure infiltration technique. The obtained foams were subjected to cyclic compressive loading in order to investigate their fatigue properties. The standard procedure for cyclic fatigue testing was slightly modified to account for the variation of porosity and strength which is typical for metallic foam samples. This approach allows the direct comparison of the fatigue test results between all investigated samples. Depending on the applied load level, two different failure mechanisms were identified that resulted in characteristic deformation -loading cycle curves. The failure mechanisms were further investigated on the microstructural scale: traces of fatigue beachmarks and extensive plastic deformation were found. Furthermore, Wöhler-like deformation -lifetime diagrams were created in order to predict the expected lifetime of the P-MSFs.http://mc.manuscriptcentral.com/jcm AbstractThe main purpose of this paper is to present the basic fatigue properties of metal matrix syntactic foams (P-MSFs). The investigated syntactic foams consisting of expanded perlite and A356 aluminum matrix were produced using an inert gas pressure infiltration technique. The obtained foams were subjected to cyclic compressive loading in order to investigate their fatigue properties. The standard procedure for cyclic fatigue testing was slightly modified to account for the variation of porosity and strength which is typical for metallic foam samples. This approach allows the direct comparison of the were created in order to predict the expected lifetime of the P-MSFs.

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“…A thorough review on the production process can be found in the manuscript [19]. Investigations have shown that the mechanical properties of perlite-MSF can be improved by reduction of the EP particle size and T6 treatment [20]. The investigation in [19] further indicates a higher plateau stress and energy absorption of perlite-MSF for decreasing particle size (d = 1.0 .…”

Section: Introductionmentioning

confidence: 99%

On the mechanical anisotropy of the compressive properties of aluminium perlite syntactic foam

Sulong

Taherishargh

Belova

et al. 2015

Computational Materials Science

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On the mechanical properties of heat-treated expanded perlite–aluminium syntactic foam

Cited by 68 publications

References 38 publications

Compressive behaviour of aluminium matrix syntactic foams reinforced by iron hollow spheres

Compressive behaviour of aluminium matrix syntactic foams reinforced by iron hollow spheres

Fatigue properties of expanded perlite/aluminum syntactic foams

On the mechanical anisotropy of the compressive properties of aluminium perlite syntactic foam

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