Development of high performance lightweight aluminum alloy/SiC hollow sphere syntactic foams and compressive characterization at quasi-static and high strain rates

Luong, Dung D.; Strbik, Oliver M.; Hammond, Vincent H.; Gupta, Nïkhil; Cho, Kyu

doi:10.1016/j.jallcom.2012.10.171

Cited by 138 publications

(92 citation statements)

References 52 publications

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“…These graphs are qualitatively similar to those previously observed for A356 matrix syntactic foams containing SiCHP or Al2O3-HP fillers [9,17]. The curves show an initial linear elastic region at the end of which the stress drops sharply due to onset of particle failure.…”

Section: Quasi-static Compressionsupporting

confidence: 87%

“…These results show that the syntactic foam having higher density has higher compressive strength and plateau strength. Previous studies have also shown that aluminum is not strain rate sensitive [9], especially at such low strain rates. The strain rate insensitivity is related to the crystal structure of aluminum, which is face centered cubic (FCC).…”

Section: Quasi-static Compressionmentioning

confidence: 87%

“…A comparison of the results obtained from the present work and the literature data is presented in Figure 4, where Figure 4a includes different types of alloys and Figure 4b includes only the available results on syntactic foams using A356 alloy [9,17,[35][36][37][38][39][40]. Many different types of particles have been used in these studies with metallic matrices.…”

Section: Quasi-static Compressionmentioning

confidence: 99%

“…Due to the ability of syntactic foams to absorb large amounts of compressive energy, they are used in automotive crash structures. In addition, this weight saving can lead to increased payload capacity in aerospace and marine applications [7][8][9]. Aluminum and magnesium matrix syntactic foams have been extensively studied in the recent literature [3,10].…”

Section: Introductionmentioning

confidence: 99%

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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: Quasi-static Compressionsupporting

confidence: 87%

Section: Quasi-static Compressionmentioning

confidence: 87%

Section: Quasi-static Compressionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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 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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Aluminum/Fly Ash Syntactic Foams: Synthesis, Microstructure and Properties

Luong

Gupta

Rohatgi

2013

Advanced Carbon Materials and Technology

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Development of high performance lightweight aluminum alloy/SiC hollow sphere syntactic foams and compressive characterization at quasi-static and high strain rates

Cited by 138 publications

References 52 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

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

Aluminum/Fly Ash Syntactic Foams: Synthesis, Microstructure and Properties

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