2D and 3D in-situ mechanical testing of an interpenetrating metal ceramic composite consisting of a slurry-based ceramic foam and AlSi10Mg

Schukraft, Joél; Lohr, Christoph; Weidenmann, Kay André

doi:10.1016/j.compstruct.2021.113742

Cited by 24 publications

(16 citation statements)

References 26 publications

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“…Subsequently, the cracks propagated to the surrounding cellwalls and plateau junctions. This correlates well with prior observations reported in literature [32][33][34].…”

Section: Fractography Analysissupporting

confidence: 93%

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Uniaxial Compressive Behavior of AA5083/SiC Co-Continuous Ceramic Composite Fabricated by Gas Pressure Infiltration for Armour Applications

et al. 2022

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A novel approach of a gas pressure infiltration technique is presented for the synthesis of Co-Continuous Ceramic Composite (C4). SiC foams of varying pore sizes were infiltrated with aluminium AA5083. Optical examination revealed that the SiC foams contained open cells with a network of triangular voids. The number of pores-per-inch (PPI) in the foams was found to depend on the strut thickness and pore diameter. The compressive strengths of two foam configurations, 10 and 20 PPI, were estimated to lie between 1–2 MPa. After infiltration, the compressive yield strength of the resulting C4 was observed to increase to 126 MPa and 120 MPa, respectively, for the 10 and 20 PPI C4. Additionally, the infiltration of ceramic foam with the AA5083 alloy resulted in an increase in strength of 58–100 times when compared with plain ceramic foam. The failure modes of the composites in compression were analyzed by crack propagation and determining the type of failure. The study revealed that shear failure and vertical splitting were the predominant mechanisms of compression failure, and that the fabricated C4 is advantageous in mechanical properties compared to the plain ceramic foam. This study, therefore, suggests the use of C4 composites in armour applications.

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“…Subsequently, the cracks propagated to the surrounding cellwalls and plateau junctions. This correlates well with prior observations reported in literature [32][33][34].…”

Section: Fractography Analysissupporting

confidence: 93%

“…Subsequently, the cracks propagated to the surrounding cell-walls and plateau junctions. This correlates well with prior observations reported in literature [32][33][34]. thus revealed that, the failure of C4 composites is contingent on the profile and orientation of the SiC struts.…”

Section: Fractography Analysissupporting

confidence: 92%

Uniaxial Compressive Behavior of AA5083/SiC Co-Continuous Ceramic Composite Fabricated by Gas Pressure Infiltration for Armour Applications

et al. 2022

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“…In comparison to previous investigation by the authors (see [29]) a first crack was visible between 235 and 280 MPa. Besides crack formation in the ceramic phase, interfacial detachment is also a significant fracture phenomenon in the damage onset stage between 235 and 335 MPa.…”

Section: Imcc Damage Onsetcontrasting

confidence: 70%

“…The experimental microstructural characterization of the composite shows first visible cracks at load-step 3 in the ceramic phase which implies a damage onset between 280 and 315 MPa. In previous investigation by the authors (see [29]) the first crack was visible between 235 and 280 MPa. In the simulation first cracks are already detected at stresses of approx.…”

Section: Imcc Damage Onsetmentioning

confidence: 72%

“…Load-steps were taken for the ceramic foam samples at 5, 9, 11, 16, 19, 21, 24, 29 and 33 MPa, as well as after failure. For the IMCC, load-steps were taken at 235, 280, 315, 335 and 370 MPa until reaching the maximum stress and five more load steps at 360, 290, 240 and 200 MPa afterwards, analogous to the results presented in [29], based on the same data. As the load steps are clearly visible in the stress-strain diagram and the strain could not be determined precisely enough from the in-situ testing setup, for comparison of the modeling results in the stress-strain-diagram with experimental data, exsitu experiments were carried out with a universal testing machine of type 1464, with a load cell xforceK up to 50 kN, each of Zwick&Roell.…”

Section: Compression Testingmentioning

confidence: 99%

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3D modeling and experimental investigation on the damage behavior of an interpenetrating metal ceramic composite (IMCC) under compression

Schukraft

Horny

Schulz

et al. 2022

Materials Science and Engineering: A

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Numerical and Experimental Investigation on the Self‐Healing Potential of Interpenetrating Metal–Ceramic Composites

et al. 2023

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An interpenetrating metal ceramic composite (IMCC) has been investigated regarding the potential as well as the feasibility of self‐healing. Triggered by heating, cracks in the damaged composite located mainly in the Al2O3 ceramic or at the interface could be filled and closed by the liquid AlSi10Mg metal alloy. This healing procedure promises to reduce stress concentrations at crack tips and to improve the mechanical properties compared to the predamaged composite. Two different numerical approaches have been introduced to investigate this assumption and the potential of self‐healed IMCCs for a best case scenario: 1) A simple 2D model to analyze the reduction of stress concentrations in front of a crack tip within the ceramic due to healing and 2) a 3D model based on CT‐scan reconstructed microstructures to study how macroscopic mechanical properties can be restored depending on the amount of predamage. Further, the self‐healing approach has been investigated experimentally for the same composite. Despite the fact that experimental self‐healing of the investigated IMCC is only moderately feasible so far, the study shows the great potential that can still be exploited in order to extend the service life time of IMCC engineering components.

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2D and 3D in-situ mechanical testing of an interpenetrating metal ceramic composite consisting of a slurry-based ceramic foam and AlSi10Mg

Cited by 24 publications

References 26 publications

Uniaxial Compressive Behavior of AA5083/SiC Co-Continuous Ceramic Composite Fabricated by Gas Pressure Infiltration for Armour Applications

Uniaxial Compressive Behavior of AA5083/SiC Co-Continuous Ceramic Composite Fabricated by Gas Pressure Infiltration for Armour Applications

3D modeling and experimental investigation on the damage behavior of an interpenetrating metal ceramic composite (IMCC) under compression

Numerical and Experimental Investigation on the Self‐Healing Potential of Interpenetrating Metal–Ceramic Composites

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