Al matrix syntactic foam fabricated with bimodal ceramic microspheres

Tao, Xin; Zhang, L.P.; Zhao, Yuyuan

doi:10.1016/j.matdes.2008.11.005

Cited by 111 publications

(57 citation statements)

References 8 publications

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“…The compressive property data for aluminum matrix syntactic foams is extracted for comparison from the published studies and plotted in Figure 9 [10,13,14,[39][40][41][42][43][44][45][46]. Composites of A2011-T6 alloys show the highest plastic stress, followed by 7075-T6 and 6061 alloy composites.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Magnesium Matrix Composite Foams—Density, Mechanical Properties, and Applications

Gupta

Luong

Cho

2012

Metals

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Potential of widespread industrial applications of magnesium has been realized in recent years. A variety of magnesium alloy matrix composites are now being studied for mechanical properties. Since magnesium is the lightest structural metal, it can replace aluminum in existing applications for further weight savings. This review presents an overview of hollow particle filled magnesium matrix syntactic composite foams. Fly ash cenospheres are the most commonly used hollow particles for such applications. Fly ash cenospheres primarily have alumino-silicate composition and contain a large number of trace elements, which makes it challenging to study the interfacial reactions and microstructure in these composites. Microstructures of commonly studied AZ and ZC series magnesium alloys and their syntactic foams are discussed. Although only a few studies are available on these materials because of the nascent stage of this field, a comparison with similar aluminum matrix syntactic foams has provided insight into the properties and weight saving potential of magnesium matrix composites. Analysis shows that the magnesium matrix syntactic foams have higher yield strength at the same level of density compared to most other metal matrix syntactic foams. The comparison can guide future work and set goals that need to be achieved through materials selection and processing method development.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Magnesium Matrix Composite Foams—Density, Mechanical Properties, and Applications

Gupta

Luong

Cho

2012

Metals

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“…Subsequently, MMSFs with bimodal ceramic hollow spheres were produced and studied. The MMSFs had ~10% higher porosity, which led to 8% higher densification strain [44]. Zhang and Zhao investigated the mechanical response of four types of Al based MMSF with different sphere sizes and densities under static and dynamic conditions.…”

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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“…In practice, usually one kind of hollow sphere set with monomodal diameter distribution is applied as reinforcement. Only a few efforts have been published about MMSFs with bimodal hollow sphere diameter distribution [39]. Daoud [10] produced closed cell foams by gas releasing method and added hollow spheres into the ZnAl12 base metal.…”

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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Al matrix syntactic foam fabricated with bimodal ceramic microspheres

Cited by 111 publications

References 8 publications

Magnesium Matrix Composite Foams—Density, Mechanical Properties, and Applications

Magnesium Matrix Composite Foams—Density, Mechanical Properties, and Applications

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

Characteristic compressive properties of hybrid metal matrix syntactic foams

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