Quasi static and dynamic compression of zinc syntactic foams

Broxtermann, S.; Vesenjak, Matej; Krstulović‐Opara, Lovre; Fiedler, Thomas

doi:10.1016/j.jallcom.2018.07.215

Cited by 31 publications

(29 citation statements)

References 26 publications

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“…Currently, different layers of FGSFs can be produced during one process with infiltration casting, which provides better structural integrity and mechanical performance [17]. The effect of impact behavior on the energy absorption of these materials was studied [18][19][20][21][22]. However, as an important mechanical property in the impact test, the ductility under impact loading was rarely studied, as well as the energy absorption within the ductility of syntactic foam.…”

Section: Introductionmentioning

confidence: 99%

Effect of Layer Thickness in Layered Aluminum Matrix Syntactic Foam

Qian

Liang

et al. 2019

Materials

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This work experimentally investigates the effect of layered structure on the static and impact response of a new layered syntactic foam developed for impact energy absorption. The layered syntactic foam had the same density of 1.6 g/cm 3 and the same components of 50% large spheres (L) and 50% small spheres (S) with different structures from two layers to five layers. The impact response and energy absorption were investigated by drop-weight impact tests. Under static loading, more layers led to higher yield stress and lower energy absorption. There were three types of progressive failures of layered syntactic form under impact loading. The failure propagation was examined and found to be dependent on the layer number and impact energy. Interestingly, layered syntactic foam absorbed more energy than both of its components in terms of ductility. The ductility of layered syntactic foam decreased with the increase in layer number. The peak stress of layered syntactic foam increased with the increase in layer number. Two-layered syntactic foam LS had the highest ductility under 60 J/g impact, as well as an energy absorption of 35 J/g, compared to other layered syntactic foams. Specifically, its component L had a ductility under 70 J/g and an energy absorption of 25 J/g, while component S had a ductility under 10 J/g and an energy absorption of 10 J/g.

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Section: Introductionmentioning

confidence: 99%

Effect of Layer Thickness in Layered Aluminum Matrix Syntactic Foam

Qian

Liang

et al. 2019

Materials

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“…Available studies on MMSF have shown that these composite foams have high heat insulation, damping of sound and vibration, great energy absorption and high specific stiffness [5]. The combination of properties for these materials are of high interest for the marine, defense, railway, automotive and aerospace industries [2,8,9]. Depending on the applications they have to meet, MMSF can be processed in several configurations such as foam filler tube (FFT) [10], foam core in sandwich panels [11] or without outer reinforcing.Composite metal foams offer diverse advantages, the most critical are the enhanced mechanical properties (50 to 100% higher than metal foams) [12] and the tailoring of their density, mechanical, electrical and magnetic properties through the adequate selection of components (matrix and reinforcement particles), manufacturing processes [11] and final thermal/solution treatment.…”

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confidence: 99%

“…High melting point alloys, such as those based on Ti [25][26][27], Fe [28][29][30] or steel [17,31,32] are typically processed by P/M techniques. In contrast, low to medium melting point alloys (about from 505 K to 934 K), such as those based on Sn [33,34], Zn [2,5,19], Mg [20,35,36] or Al [37][38][39] are usually processed by liquid metallurgy.Filler particles introduced as reinforcement in MMSF are lightweight aggregates with less density than water. They exhibit two main inner structures, hollow or porous [40][41][42].…”

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confidence: 99%

“…Chemical composition of the available reinforcements varies greatly. Several studies have reported the utilization of natural-made fillers: Expanded vermiculite [45], pumice [40], lightweight expanded clay aggregate (LECA) [3,46], expanded perlite (EP) [47,48] and expanded glass (EG) [2,49]. In other cases, commercial or human-made lightweight aggregates have been successfully used: fly-ash cenospheres (FAC) [50][51][52], glass microballoons (GMB) [1,5], ceramic spheres (CMB) [11,53,54], carbon hollow spheres [55] and hollow metallic spheres [56].…”

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confidence: 99%

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confidence: 99%

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Molten Metal Infiltration Methods to Process Metal Matrix Syntactic Foams

S-de-la-Muela

Cambronero

Ruiz‐Román

2020

Metals

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Metal matrix syntactic foams (MMSF) are foam composites obtained by filling hollow and/or porous particles into a metal matrix. MMSF are promising materials in defense, aerospace, automotive, marine and engineering applications. Mechanical and physical properties of MMSF can be tailored to reach better structural and/or functional behaviors by fitting processing and tailoring parameters. Some of these parameters are: reinforcement size, volume fraction, distribution of reinforcements and chemical composition. Three techniques are available to manufacture MMSF: Stir casting/vortex method (SC), powder metallurgy (P/M) and infiltration routes. Infiltration process is by far the main employed for making MMSF, it allows a large range of reinforcement (30 vol % to 78 vol %) and offers great advantages compared to other techniques. This paper reviews infiltration routes used to date, their advantages and drawbacks, the main processing parameters of each route, and a relation of representative studies developed to date on the synthesizing of MMSF by molten infiltration processes.

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Compressive Properties of Aluminum Matrix Syntactic Foams Prepared by Stir Casting Method

Wang

Hai

2019

Adv Eng Mater

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Aluminum matrix syntactic foams with the density of 1.68–2.05 g cm−3 are prepared by the stir casting method. Al2O3 hollow spheres with a volume fraction of 38–48% are chosen as reinforcement and their diameters had three ranges. Ca particles increased melt viscosity to ensure uniform dispersion and good interfacial wettability of the hollow spheres in matrixes. Quasi‐static compression tests are performed. The results show that the mechanical properties and energy absorption capacity increased with decreasing size of the hollow spheres and increasing density of syntactic foams. For the same size hollow spheres and the same density gradient, the T6‐ZL111 matrix syntactic foams had the highest properties, while the cpAl matrix syntactic foams had the lowest values. Macroscopically, relative to plastic collapse, brittle fracture of syntactic foams dominated in compression process. The microscopic deformation and failure mechanism related to matrix plasticity, heat treatment, and density of syntactic foams.

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Quasi static and dynamic compression of zinc syntactic foams

Cited by 31 publications

References 26 publications

Effect of Layer Thickness in Layered Aluminum Matrix Syntactic Foam

Effect of Layer Thickness in Layered Aluminum Matrix Syntactic Foam

Molten Metal Infiltration Methods to Process Metal Matrix Syntactic Foams

Compressive Properties of Aluminum Matrix Syntactic Foams Prepared by Stir Casting Method

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