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Stress-induced anisotropy of sintering alumina: Discrete element modelling and experiments

Wonisch, A. and Guillon, Olivier and Kraft, Torsten and Moseler, M. and Riedel, H. and Rödel, Jürgen (2007):
Stress-induced anisotropy of sintering alumina: Discrete element modelling and experiments.
In: Acta Materialia, pp. 5187-5199, 55, (15), ISSN 13596454,
[Online-Edition: http://dx.doi.org/10.1016/j.actamat.2007.05.038],
[Article]

Abstract

Simulations based on the discrete element method are employed to investigate the anisotropic sintering of alumina. The results are compared with accompanying experiments. It is shown that during sinter forging an anisotropic microstructure develops, which leads to anisotropic mechanical properties. Several ways to characterize and measure this anisotropy are presented and utilized to identify the causes for anisotropic sintering behaviour. Discrete element modelling can further be employed to determine anisotropic constitutive parameters as a function of density. Also, the influence of grain rearrangement on the development of anisotropy is investigated.

Item Type: Article
Erschienen: 2007
Creators: Wonisch, A. and Guillon, Olivier and Kraft, Torsten and Moseler, M. and Riedel, H. and Rödel, Jürgen
Title: Stress-induced anisotropy of sintering alumina: Discrete element modelling and experiments
Language: English
Abstract:

Simulations based on the discrete element method are employed to investigate the anisotropic sintering of alumina. The results are compared with accompanying experiments. It is shown that during sinter forging an anisotropic microstructure develops, which leads to anisotropic mechanical properties. Several ways to characterize and measure this anisotropy are presented and utilized to identify the causes for anisotropic sintering behaviour. Discrete element modelling can further be employed to determine anisotropic constitutive parameters as a function of density. Also, the influence of grain rearrangement on the development of anisotropy is investigated.

Journal or Publication Title: Acta Materialia
Volume: 55
Number: 15
Uncontrolled Keywords: Sintering; Anisotropy; Modelling; Sinter forging; Discrete element method
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 18 May 2011 15:19
Official URL: http://dx.doi.org/10.1016/j.actamat.2007.05.038
Identification Number: doi:10.1016/j.actamat.2007.05.038
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