DISLOCATIONS IN YBA2CU3O7-DELTA CERAMICS PLASTICALLY DEFORMED AT ROOM-TEMPERATURE

被引：15
|
作者：
RABIER, J
DENANOT, MF
机构：
[1] Laboratoire de Métallurgie Physique, U.R.A. 131 CNRS Faculté des Sciences
来源：
JOURNAL OF THE LESS-COMMON METALS | 1990年 / 164卷
关键词：
D O I：
10.1016/0022-5088(90)90218-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Defects introduced at room temperature in YBa2Cu3O7 - δ ceramics during high stress plastic deformation tests were characterized by transmission electron microscopy (TEM). Dislocations with 〈100〉 Burgers vectors gliding in the (001) plane have been found to control plastic deformation. Glide dislocations interact strongly with mirror twin boundaries in the orthorhombic phase. Out-of-equilibrium shapes of dislocations evidenced in the tetragonal phase reveal memory effects of twin locations in the orthorhombic phase. © 1990.
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页码：223 / 230
页数：8
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