Comment on the role of intragranular dislocations in superplastic yttria-stabilized zirconia

被引：23

作者：

Balasubramanian, N

Langdon, TG ^{[1
]}

机构：

[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[2] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 05期

关键词：

ceramics; creep; high-temperature mechanical properties; superplasticity; yttria-stabilized zirconia;

D O I：

10.1016/S1359-6462(02)00471-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

It is shown by analysis, including through the incorporation of dislocation pile-ups, that the intragranular movement of dislocations plays little or no significant role in the deformation of high purity yttria-stabilized zirconia when testing at 1673 K at stresses below similar to100 MPa. It is proposed instead that deformation occurs through interface-controlled Coble diffusion creep. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：599 / 604

页数：6