Influence of defects on the high temperature mechanical behaviour of yttria fully-stabilized zirconia single crystals

被引：2
|
作者：
Gómez-García, D [1 ]
Gallardo-López, A [1 ]
Martínez-Fernández, J [1 ]
Domínguez-Rodríguez, A [1 ]
机构：
[1] Univ Sevilla, Dept Fis Mat Condensada, E-41080 Seville, Spain
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1999年 / 151卷 / 1-4期
关键词：
YFSZ; mechanical properties; dislocation-defects interaction;
D O I：
10.1080/10420159908245941
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
This work is focused on the study of the influence of high temperature heat treatments given prior to deformation in yttria fully-stabilized zirconia single crystals (YFSZ). Experimental results show that the yield stress found in constant strain tests performed in heat-treated samples is remarkably dependent on the annealing time when the treatment is given under a very low oxygen pressure atmosphere. This phenomenon has been explained through the analysis of the thermodynamics of complex defects found at high temperature, as well as the interaction between mobile dislocations with them during plastic deformation.
引用
收藏
页码：83 / 89
页数：7
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