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

被引：86
|
作者：
Wonisch, A.
Guillon, O.
Kraft, T.
Moseler, M.
Riedel, H.
Roedel, J.
机构：
[1] Fraunhofer Inst Mech & Mat, D-79108 Freiburg, Germany
[2] Univ Technol, Inst Sci Mat, D-64287 Darmstadt, Germany
来源：
ACTA MATERIALIA | 2007年 / 55卷 / 15期
关键词：
sintering; anisotropy; modelling; sinter forging; discrete element method;
D O I：
10.1016/j.actamat.2007.05.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5187 / 5199
页数：13
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