Effect of Sphere Properties on Microstructure and Mechanical Performance of Cast Composite Metal Foams

Garcia-Avila, Matias; Rabiei, Afsaneh

doi:10.3390/met5020822

Cited by 19 publications

(11 citation statements)

References 27 publications

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“…In addition to sphere size, variations in the matrix were also tested to optimize CMF performance. The explanation and effect of these variables on CMF can be found in previous works . The typical stress–strain curve of composite metal foam samples can be seen in Figure .…”

Section: Composite Metal Foams At a Glancementioning

confidence: 78%

“…The matrix in CMFs stabilizes the sphere's thin walls, blunts crack growth in the material, and reduces buckling under loading, which will greatly increase the material's strength and energy absorption . CMF properties have been shown to vary with sphere size and wall thickness and can be tailored to specific applications …”

Section: Composite Metal Foams At a Glancementioning

confidence: 99%

See 1 more Smart Citation

Overview of Composite Metal Foams and Their Properties and Performance

Marx¹,

Rabiei²

2017

Adv Eng Mater

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This paper reviews the background and evolution of composite metal foam (CMF) from its inception until now. A broad understanding of the processing and basic mechanical, microstructural, and physical properties of different types of composite metal foams is discussed in the first part of the paper. In the second part, some recent studies on high strain rate properties, ballistic performance, radiation attenuation, and thermal properties of composite metal foams are discussed and compared with other bulk and control materials. These properties suggest many potential applications for this novel material in a broad range of engineering structures from ballistic armors to trains', cars', buses', helicopters' crashworthiness systems, and many others such as nuclear casks and thermal insulating units.

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Section: Composite Metal Foams At a Glancementioning

confidence: 78%

Section: Composite Metal Foams At a Glancementioning

confidence: 99%

Overview of Composite Metal Foams and Their Properties and Performance

Marx¹,

Rabiei²

2017

Adv Eng Mater

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“…The hollow sphere packing density of CMFs was reported to be 59 vol% [15]. The percentages of matrix porosities were calculated using image analysis techniques to be 6.7 vol% in (4 mm sphere) Al-S CMFs [3] and 50.1 vol% in (4 mm sphere) SeS CMFs [7]. By using the densities of hollow spheres (Table 1) and matrix (Table 5), as well as their corresponding volume fraction as input, the weight fractions of matrix materials in the (4 mm sphere) AleS CMF and (4 mm sphere) SeS CMF were calculated to be 51.7 wt% and 63.2 wt %, respectively (Table 5).…”

Section: Theoretical Model To Predict Specific Heatmentioning

confidence: 99%

Experimental and computational studies on the thermal behavior and fire retardant properties of composite metal foams

Chen

Marx

Rabiei

2016

International Journal of Thermal Sciences

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a b s t r a c tA comprehensive experimental and computational evaluation of thermal behavior and fire retardant properties of composite metal foams (CMFs) is reported in this study. Thermal behavior characterizations were carried out through specific heat, effective thermal conductivity, and coefficient of thermal expansion analyses using differential scanning calorimetry, high temperature guarded-comparativelongitudinal heat flow technique, and thermomechanical analyzer (TMA), respectively. The experimental results were compared with analytical results obtained from, respectively, rule of mixture, Brailsford and Major's model, and modified Turner's model for verification. United States Nuclear Regulatory Commission (USNRC) standards were employed as regulatory standards and criteria for fire retardant property study. The results revealed a superior thermal resistance and fire survivability of CMFs compared to 304L stainless steel. A physics-based three-dimensional model accounting for heat conduction was built using Finite Element Analysis to validate the reliability of the experimental results. The model led to a good reproduction of the experimentally measured data when comparing CMF to bulk stainless steel. This research indicates that one of the potential applications of lightweight CMFs can be in nuclear spent fuel casks replacing conventional structural and radiation shielding materials with demonstrated benefits of excellent thermal isolation, fire retardant, light weight and energy absorption capabilities.

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“…When the hollow particle diameters are no more than 1 mm, many stress-strain curves rise evidently in the platform region. 8,13) In the case of Al matrix foams with larger hollow structure (the diameters are in the range of 1.925.6 mm), the sphere materials include steel, 9,32) iron, 15) alumina, 7) expanded perlite, 10,14) pumice particle, 11) etc. Densities of foams in the upper right area in Fig.…”

Section: Comparison Of Compressive Performances Of Different Metal Foamsmentioning

confidence: 99%

Preparation and Compressive Performance of an A356 Matrix Syntactic Foam

Wang

Chen

et al. 2018

Mater. Trans.

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The uniformity of the cell size of aluminum foams prepared by traditional melt foaming and gas injection methods is difficult to control. In order to improve the controllability of cell size and mechanical performance of aluminum foam, an A356 matrix syntactic foam was prepared by the improved stir casting process. Moreover, the compressive property of the syntactic foam was studied and compared with other metal foams. Al 2 O 3 hollow spheres with the diameters of 35 mm were added in the molten A356 alloy, then the syntactic foam can be obtained after stirring and compaction. The hollow spheres in the syntactic foam are random loose packed. The volume fraction of 33.5 mm hollow spheres in the syntactic foam could reach to 56%. The total densities of the syntactic foams are around 1.79 g/cm 3. Through the analysis both in macroscopic and microscopic, the interfacial bonding between aluminum matrix and hollow spheres was proved to be good even after mechanical cutting. The quasi-static compression result showed that the plateau stress of the syntactic foam with 33.5 mm hollow spheres could reach up to 46 MPa, and the corresponding densification strain energy is 20 MJ/m 3. Moreover, the plateau region is flat, long and relatively high. The syntactic foam with the hollow spheres of 34 mm diameter has the highest overall porosity and the best compressive performance. Compared with other traditional aluminum foams, this syntactic foam has advantages in energy absorption performance and the adjustability of cell size.

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Effect of Sphere Properties on Microstructure and Mechanical Performance of Cast Composite Metal Foams

Cited by 19 publications

References 27 publications

Overview of Composite Metal Foams and Their Properties and Performance

Overview of Composite Metal Foams and Their Properties and Performance

Experimental and computational studies on the thermal behavior and fire retardant properties of composite metal foams

Preparation and Compressive Performance of an A356 Matrix Syntactic Foam

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