Interactions between domain switching and crack propagation in poled BaTiO3 single crystal under mechanical loading

Interactions between domain switching and crack propagation in poled BaTiO3 single crystal under mechanical loading
复制标题

机械载荷下极化 BaTiO3 单晶的畴切换与裂纹扩展之间的相互作用

DOI:
10.1016/j.actamat.2007.06.024
复制
发表时间:
2007-10
期刊:
影响因子:
9.4
通讯作者:
--
中科院分区:
材料科学1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

本文研究了在机械载荷作用下铁电单晶中裂纹扩展与相应的畴变之间的相互作用。利用偏光显微镜(PLM)对极化BaTiO 3试样在三点弯曲载荷下的裂纹扩展进行了原位观察。观察到的畴变是由裂纹尖端附近的强应力场激发的,考虑畴变增韧的理论R曲线与实验结果定量吻合。从实际的转变区证实了90°畴变是断裂增韧的主要机制,BaTiO 3单晶试样的表观断裂韧性提高了150%。
In this paper, the interactions between the crack propagation and corresponding domain switching in ferroelectric single crystal under mechanical loading were investigated. An experimental setup with a polarized light microscope (PLM) was designed and constructed to in situ observe the crack propagation in poled BaTiO3specimens subjected to three-point-bending loading. The observed domain switching was stimulated by the intensive stress field near the crack tip, and the theoretical R-curve taking into account the domain switching toughening agrees well with the experimental results quantitatively. It is confirmed from the actual switched zone that the 90° domain switching is the major mechanism of the fracture toughening, and the apparent fracture toughness increases by 150% in the BaTiO3single crystal specimen.
DOI: 10.1111/j.1151-2916.2000.tb01197.x
发表时间: 2000-02-01
影响因子: 3.9
作者:
Meschke, F;Raddatz, O;Schneider, GA
通讯作者: Schneider, GA
DOI: 10.1016/0020-7225(94)e0039-l
发表时间: 1995
影响因子: 6.6
作者:
P. Rosakis;Q. Jiang
通讯作者: P. Rosakis;Q. Jiang
DOI: 10.1111/j.1151-2916.2001.tb01116.x
发表时间: 2001-12-01
影响因子: 3.9
作者:
Glazounov, AE;Kungl, H;Wroblewski, T
通讯作者: Wroblewski, T
DOI: 10.1016/j.ijsolstr.2005.05.015
发表时间: 2006-07
影响因子: 3.6
作者:
Yuanqing Cui;Wei Yang
通讯作者: Yuanqing Cui;Wei Yang
DOI: 10.1080/01418610110058301
发表时间: 2002-01
期刊: Philosophical Magazine A
影响因子: --
作者:
M. Reece;F. Guiu
通讯作者: M. Reece;F. Guiu