Damage evolution and domain-level anisotropy in metal/ceramic composites exhibiting lamellar microstructures

Roy, Siddhartha; Butz, Benjamin; Wanner, A.

doi:10.1016/j.actamat.2009.12.015

Cited by 74 publications

(38 citation statements)

References 23 publications

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“…In particular, their fracture behavior is described by a rising R ‐curve, showing resistance to the propagation of defects (Figure f). Recently, freeze casting has also been used to fabricate metal/ceramic composite with a fine lamellar structure, such as the Aluminum/alumina composite made by Roy et al (Figure b–d). The lamellar domains, characteristic of this structure, induced high anisotropy.…”

Section: Case Studiesmentioning

confidence: 99%

Advanced Structural Materials by Bioinspiration

2017

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In the quest of increasing safety and efficiency in structural applications, by designing and manufacturing new strong and tough composite materials, learning from the design of natural materials can be a promising strategy. Nature has evolved for billions of years to develop elaborate architectures and sophisticated strategies, based on mechano-biological mechanisms, to achieve optimally adapted material solutions. A brief review of exemplar naturally occurring materials is provided, here, with a focus on their multiscale structures and the mechanisms governing their mechanical properties. The design motifs, common to biological structural materials, and the mechanisms underlying their characteristics are summarized, with a highlight on the structureproperty relationship. A review of recent advancement in the manufacturing of bio-inspired composite materials, mainly inspired by bone, nacre, and teeth, is provided, followed by recent and successful case studies. In this paper, the main focus is on nacre and bone-inspired structural materials, aimed at mimicking the mechanical behavior. Finally, a critical discussion is provided, highlighting the limitations of the current innovative techniques and materials, and prospecting the future challenges for the design and development of de novo materials and manufacturing processes for real engineering applications.

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Section: Case Studiesmentioning

confidence: 99%

Advanced Structural Materials by Bioinspiration

2017

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“…[3] Ceramic composites containing suspensions were also demonstrated with a unique combination of high strength (470 MPa), high toughness (22 MPa. [20,22,23] The metal mortar is often squeezed-casted (melt infiltration, or liquid metal infiltration) into the porous ceramic scaffold. [11] Although polymers have been demonstrated as a mortar layer in brick-and-mortar architecture, [3,[15][16][17][18] polymers lack sufficient strength for optimal load-transfer between strong and stiff ceramic bricks.…”

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confidence: 99%

“…[15,20,21] Lamellar ceramic-metal composites have been also demonstrated. [20,22,23] The metal mortar is often squeezed-casted (melt infiltration, or liquid metal infiltration) into the porous ceramic scaffold. In another approach, copper flakes were co-assembled with alumina platelets and subsequently densified.…”

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confidence: 99%

Bioinspired Nacre‐Like Ceramic with Nickel Inclusions Fabricated by Electroless Plating and Spark Plasma Sintering

Xü

Huang²,

Zhang

et al. 2018

Adv Eng Mater

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Hybrid composites of layered brittle-ductile constituents assembled in a brick-and-mortar architecture are promising for applications requiring high strength and toughness. Mostly, polymer mortars have been considered as the ductile layer in brick-and-mortar composites. However, low stiffness of polymers does not efficiently transfer the shear between hard ceramic bricks. Theoretical models point to metals as a more efficient mortar layer. However, infiltration of metals into ceramic scaffold is non-trivial, given the low wetting between metals and ceramics. The authors report on an alternative approach to fabricate brick-and-mortar ceramic-metal composites by using electroless plating of nickel (Ni) on alumina micro-platelets, in which Ni-coated microplatelets are subsequently aligned by a magnetic field, taking advantage of ferromagnetic properties of Ni. The assembled Ni-coated ceramic scaffold is then sintered using spark plasma sintering (SPS) to locally create Ni mortar layers between ceramic platelets, as well as to sinter the ceramic microplatelets. The authors report on materials and mechanical properties of the fabricated composite. The results show that this approach is promising toward development of bioinspired ceramic-metal composites.Many structural materials are quickly approaching their performance limits. [1] There is an unmet demand for damage-tolerant, lightweight bulk structural composites for a range of applications including transportation, infrastructure, and for applications requiring operation in extreme environments, such as high temperature and high pressure. Damage tolerance refers to the ability of a material to exhibit simultaneous strength and toughness to resist propagation of cracks.

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“…Failure in this direction occurred in a brittle manner, while other directions were controlled by the alloy and exhibited extensive ductility (Roy, Butz and Wanner, 2010). In the subsequent studies, complete set of anisotropic elastic properties of these composites was determined experimentally using ultrasound phase spectroscopy and resonant ultrasound spectroscopy and predicted using micromechanical modelling (Ziegler et al, 2010, Roy et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

Analysis of multiple cracking in metal/ceramic composites with lamellar microstructure

et al. 2015

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Metal/ceramic composites with lamellar microstructures area novel class of metal-matrix composites produced by infiltration of freeze-cast or ice-templated ceramic preforms with molten aluminium alloy. The cost-effectiveness of production and relatively high ceramic content make such composites attractive to a number of potential applications in the automotive, aerospace and biomedical engineering. A hierarchical lamellar microstructure exhibited by these composites, with randomly orientated domains in which all ceramic and metallic lamellae are parallel to each other, is the result of the ice crystal formation during freeze-casting or ice templating of preforms from water-ceramic suspensions. In this paper, a single-domain sample of metal/ceramic composite with lamellar microstructure is modeled theoretically using a combination of analytical and computational means. Stress field in the sample containing multiple transverse cracks in the ceramic layer is determined using a modified 2-D shear lag approach and a finite element method. Using finite element modeling the shear layer thickness is determined and used as input in the analytical model. Degradation of stiffness properties of the sample due to multiple transverse cracking is predicted using the Equivalent Constraint Model.

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Damage evolution and domain-level anisotropy in metal/ceramic composites exhibiting lamellar microstructures

Cited by 74 publications

References 23 publications

Advanced Structural Materials by Bioinspiration

Advanced Structural Materials by Bioinspiration

Bioinspired Nacre‐Like Ceramic with Nickel Inclusions Fabricated by Electroless Plating and Spark Plasma Sintering

Analysis of multiple cracking in metal/ceramic composites with lamellar microstructure

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