Multiscale Modelling of Gradual Degradation in Al2O3/ZrO2 Ceramic Composites under Tension

Tomasz Sadowski; Liviu Marsavina

doi:10.4028/www.scientific.net/MSF.638-642.2743

Paper Titles

Heat Transfer Coefficient Measurements (HTC) at the Metal-Mould Interface in Permanent Mould Casting
p.2718

Modelling of Grain Boundary Stability of Materials under Severe Plastic Deformation and Experimental Verification
p.2724

Calculation of Energies of Coherent Interfaces and Application to the Nucleation, Growth and Coarsening of Precipitates
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Modeling and Optimization of Cross-Sectional Microstructure Distribution during Hot Rolling of HSLA Steel Plates
p.2736

Multiscale Modelling of Gradual Degradation in Al₂O₃/ZrO₂ Ceramic Composites under Tension
p.2743

Microcracked Materials as Non-Simple Continua
p.2749

Coupling Continuum and Discrete Models of Materials with Microstructure: A Multiscale Algorithm
p.2755

X-Ray Computed Tomography Based Modelling of Polymeric Foams
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Homogenization of Out-of-Plane Loaded Random Plates
p.2766

HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Multiscale Modelling of Gradual Degradation in...

Multiscale Modelling of Gradual Degradation in Al₂O₃/ZrO₂ Ceramic Composites under Tension

Abstract:

Two-phase ceramic composite materials, (CMC, e.g. Al2O3/ZrO2), have a non-linear and complex overall response to applied loads due to: different phases, existence of an inital porosity, development of limited plasticity and internal microdefects. All microdefects act as stress concentrators and locally change the state of stress, leading to the development of mesocracks and finally macrocracks. Experimental results show that defects develop mainly inter-granular and cause inhomogeneity and induced anisotropy of the solid. Modelling of such material response is possible by multiscale approach describing different phenomena occuring at different scales: micro- meso- and macro- ones. The paper presents uniaxial tension process of the Al2O3/ZrO2 composite with the gradual degradation of the material properties due to different defects development.

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Materials Science Forum (Volumes 638-642)

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2743-2748

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.2743

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Online since:

January 2010

Authors:

Tomasz Sadowski, Liviu Marsavina

Keywords:

Alumina, Ceramic Composite Material, Uniaxial Compression, Zirconia

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