Thermal Residual Stresses Generated during Processing of Cr-Al2O3 Composites and their Influence on Macroscopic Elastic Properties

Witold Weglewski; Marcin Chmielewski; Dariusz Kaliński; Katarzyna Pietrzak; Michal Basista

doi:10.4028/www.scientific.net/AST.65.27

Paper Titles

Near-Net-Shape Thermoplastic Forming of Alumina-Silicon Carbide Nanocomposites
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Structure Evolution in Al₂O₃ - ZrO₂(Y₂O₃) Ceramic Composites during Sintering
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Production and Characterization of Alumina-Diamond Composites and Nanocomposites
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Influence of Residual Thermal Stresses on the Properties of the NiAl Matrix Composites Reinforced with Ceramic Particles
p.21

Thermal Residual Stresses Generated during Processing of Cr-Al₂O₃ Composites and their Influence on Macroscopic Elastic Properties
p.27

Microstructural and Thermo-Mechanical Characterization of Yttria Ceramic Cores for Investment Casting, with and without Particulate Reinforcement
p.33

Effects of the Pin-on-Disc Parameters on the Wear of Alumina
p.39

Diffusion Studies Involving Nanometric and Submicrometric Based Alumina Composites with Gray Cast Iron
p.45

Titanium Carbide Reinforced Composite Tool Ceramics Based on Alumina
p.50

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Thermal Residual Stresses Generated during Processing of Cr-Al₂O₃ Composites and their Influence on Macroscopic Elastic Properties

Abstract:

This work is focused on the modeling of thermal stresses induced during the fabrication of the metal/ceramic composites. On example of Cr-Al2O3 composite processed by powder metallurgy, thermal stresses after fabrication are determined by FEM model for different contents of metal and ceramic phases. Numerical model of microcracking induced by thermal stresses is then proposed and applied to compute the overall elastic properties of the damaged composite. Comparison of the model predictions with the measured data for Young's modulus is presented.