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首页> 外文会议>China International Conference on High-Performance Ceramics >Experimental Study of Micro Displacement Field of Microstate of Crack Tips of Ceramics Plasticized with Zirconia and Stabilized by Yttrium Oxide - Application of Digital Image Correlation Method Based on Analysis by Scanning Electron Microscope
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Experimental Study of Micro Displacement Field of Microstate of Crack Tips of Ceramics Plasticized with Zirconia and Stabilized by Yttrium Oxide - Application of Digital Image Correlation Method Based on Analysis by Scanning Electron Microscope

机译：用氧化锆塑化的陶瓷裂纹尖端微型膨胀粒子微量位移场的实验研究与氧化钇稳定的应用 - 扫描电子显微镜基于分析的数字图像相关方法应用

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摘要

To study the deformation reaction of different metallurgical phases of the micron structure of crack tips of zirconia ceramics in the loading state, the paper presents the micro experimental study based on the digital correlated method of analysis by scanning electron microscope on the displacement field in the micro areas of crack tip of the specimen of the Y_2O_3-Z_rO_2 toughened ceramic with the simple edge notch beam method and under the action of three-point bending loads. First, SEM analyses was made on the local area of the crack tip of a specimen's polished surface before and after loads are applied to the specimen, thus obtaining two SEM images, one before the application of the loads and another after the load application, which contained their displacement information. Then, digital correlation calculations were made between the gray scales of the pixels of the two images in order to obtain the microscopic displacement fields of the crack tips in the microstate, thus unveiling the deformation modality and displacement response of different metallurgical phases of the crack tips of zirconia ceramics when subject to loads. The results of the studies will provide foundations and basis for further research in the mechanical properties of the ceramics with Y_2O_3-Z_rC>2 and their relationship with the microstructures.
机译：为了研究氧化锆陶瓷裂纹尖端裂纹尖端的不同冶金相的变形反应在加载状态下，基于通过扫描电子显微镜在微量位移场上的扫描电子显微镜的数字相关方法的微实验研究Y_2O_3-Z_RO_2裂纹尖端的裂纹尖端用简单的边缘凹凸法和三点弯曲载荷的作用下的陶瓷。首先，在将载荷施加到样本之前和之后，在载荷施加到标本之前和之后，在样品的亮度尖端的局部区域上进行SEM分析，从而获得两个SEM图像，在加载载荷之后，其中载重包含他们的流离失所信息。然后，在两个图像的像素的灰度尺度之间进行数字相关计算，以便获得微溶液中的裂缝尖端的微观位移场，从而揭示裂纹尖端的不同冶金阶段的变形模态和位移响应氧化锆陶瓷在受载荷时。研究结果将为陶瓷的机械性能以及与微观结构的关系提供进一步研究的基础和基础。

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