Characterization of grain boundary sliding in a fine-grained alumina-zirconia ceramic composite by atomic force microscopy

被引：18

作者：

Clarisse, L ^{[1
]}

Petit, F ^{[1
]}

Crampon, J ^{[1
]}

Duclos, R ^{[1
]}

机构：

[1] Univ Sci & Technol Lille, CNRS, URA 234, Lab Struct & Proprietes Etat Solide, F-59655 Villeneuve Dascq, France

来源：

CERAMICS INTERNATIONAL | 2000年 / 26卷 / 03期

关键词：

composite; grain boundaries; plasticity; Al2O3; ZrO2; atomic force microscopy;

D O I：

10.1016/S0272-8842(99)00056-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Grain boundary sliding has been investigated on the three kinds of interface during the superplastic deformation of a fine-grained alumina-zirconia ceramic composite by atomic force microscopy. The changes in surface topography on both sides of the same boundaries have been characterized throughout specimen deformation. In the experimented deformation conditions (1325 degrees C, 60 MPa) the three kinds of interface exhibit similar sliding mobilities. within 20% and in average grain boundary sliding contributes to more than 80% of the total strain. The stress redistribution, associated to the difference in phase ductility, has been estimated. The results are in agreement with the values that can be calculated by an isostrain model or a three phase model. (C) 2000 Elsevier Science Ltd and Techna S.r.l. All rights reserved.

引用

页码：295 / 302

页数：8

共 31 条

[1] DIFFUSION-ACCOMMODATED FLOW AND SUPERPLASTICITY [J].