Cenosphere filled aluminum syntactic foam made through stir-casting technique

Mondal, D.P.; Das, S.; Ramakrishnan, N.; Bhasker, K. Uday

doi:10.1016/j.compositesa.2008.12.006

Cited by 144 publications

(82 citation statements)

References 21 publications

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“…Studies of A356/alumina and A2014/cenosphere filler syntactic foams showed that under compression, syntactic foams develop shear zones along which particles fracture and densify. The size of the densification zone increases with compressive strain and results in the stress plateau seen in the stress-strain diagrams of these materials [17][18][19]. Similar features are observed in the compression testing of pure Al/alumino-silicate hollow sphere…”

Section: Introductionsupporting

confidence: 63%

Dynamic and Thermal Properties of Aluminum Alloy A356/Silicon Carbide Hollow Particle Syntactic Foams

Cox

Luong

Shunmugasamy

et al. 2014

Metals

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Aluminum alloy A356 matrix syntactic foams filled with SiC hollow particles (SiCHP) are studied in the present work. Two compositions of syntactic foams are studied for quasi-static and high strain rate compression. In addition, dynamic mechanical analysis is conducted to study the temperature dependent energy dissipation and damping capabilities of these materials. The thermal characterization includes study of the coefficient of thermal expansion (CTE). A356/SiCHP syntactic foams are not strain rate sensitive as the compressive strength displayed little variation between the tested strain rates of 0.001-2100 s −1. Microscopic analysis of the high strain rate compression tested specimens showed that the fracture is initiated by the failure of hollow particles at the onset of the plastic deformation region. This is followed by plastic deformation of the matrix material and further crushing of particles. The syntactic foams showed decrease in storage modulus with increasing temperature and the trend was nearly linear up to 500 °C. The alloy shows a similar behavior at low temperature but the decrease in storage modulus increases sharply over 375 °C. The loss modulus is very small for the tested materials OPEN ACCESSMetals 2014, 4 531 because of lack of viscoelasticity in metallic materials. The trend in the loss modulus is opposite, where the matrix alloy has lower loss modulus than syntactic foams at low temperature. However, over 250 °C the matrix loss modulus starts to increase rapidly and attains a peak around 460 °C. Syntactic foams have higher damping parameter at low temperatures than the matrix alloy. Incorporation of SiCHP helps in decreasing CTE. Compared to the CTE of the matrix alloy, 23.4 × 10 −6 °C −1 , syntactic foams showed CTE values as low as 11.67 × 10 −6 °C −1 .

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Section: Introductionsupporting

confidence: 63%

Dynamic and Thermal Properties of Aluminum Alloy A356/Silicon Carbide Hollow Particle Syntactic Foams

Cox

Luong

Shunmugasamy

et al. 2014

Metals

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“…The MMSFs showed higher strength and higher energy absorption capability at higher strain rates. Mondal et al [13,14] reported stircasted ASFs behaved like high strength Al foams under compressive deformation, both at room and elevated temperature. The plateau stress decreased with hollow sphere volume fraction, following a power law relationship.…”

Section: Introductionmentioning

confidence: 99%

“…Stir casting is cheaper and faster, but it can only produce lower reinforcement volume fractions due to hollow sphere breakage caused by mechanical stirring [8][9][10][11][12][13][14][15][16]. In the case of infiltration two basic methods can be separated: gravity-fed infiltration (only in the case of wetting matrix -reinforcement systems [17][18][19][20]) and pressure-assisted infiltration (for non-wetting systems).…”

Section: Introductionmentioning

confidence: 99%

Characteristic compressive properties of hybrid metal matrix syntactic foams

Májlinger

Orbulov

2014

Materials Science and Engineering: A

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Hybrid metal matrix syntactic foams (hybrid MMSFs) are particle reinforced composites in which the reinforcement is the combination of more than one grade of hollow spheres. The difference between the spheres can be in their chemical composition, dimension, physical properties etc. In this study AlSi12 matrix hybrid MMSFs with monomodal Globocer (Al2O3 and SiO2 based ceramic) and Globomet (pure Fe) reinforcements were produced by pressure infiltration. The investigation parameters were the ratio of the hollow sphere grades and the aspect ratio of the specimens. Microstructural investigations showed almost perfect infiltration and favourable interface layer, while quasi-static compression tests showed that the composition of the reinforcement and the aspect ratio of the specimens have determinative effect on the characteristic properties (compressive and flow strength, fracture strain, stiffness and absorbed energy). This nature of the MMSFs ensures the possibility to tailor their properties in order to optimise them for a given application.

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“…While the matrix did not show any strain rate sensitivity, the composite showed higher strength and energy absorption capability at higher strain rates [34]. Mondal et al performed wide range of materials testing such as classical quasi-static [35], high strain rate [32] or elevated temperature compression [36] tests, wear tests [37,38] and finite element analyses [39]. Palmer et al studied the mechanical properties of MMSFs incorporating 45 and 270 μm ceramic microspheres in Al1350, Al5083 and Al6061 alloy matrices.…”

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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Cenosphere filled aluminum syntactic foam made through stir-casting technique

Cited by 144 publications

References 21 publications

Dynamic and Thermal Properties of Aluminum Alloy A356/Silicon Carbide Hollow Particle Syntactic Foams

Dynamic and Thermal Properties of Aluminum Alloy A356/Silicon Carbide Hollow Particle Syntactic Foams

Characteristic compressive properties of hybrid metal matrix syntactic foams

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

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