| Ce—TZP结构陶瓷相变塑性区实验研究 |
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| 引用本文： | 卿新林,秦玉文,孙庆平. Ce—TZP结构陶瓷相变塑性区实验研究[J]. 力学学报, 1995, 27(Z1): 92-97 |
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| 作者姓名： | 卿新林 秦玉文 孙庆平 |
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| 作者单位： | 天津大学力学系 |
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| 摘 要： | 用云纹干涉法对ＺｒＯ＿２相变多晶体三点弯曲梁切口周围应力诱导的相变塑性区进行了实验研究，得到了三点弯曲梁切口周围相变塑性区的形状及相变塑性分布。实验结果表明：Ｃｅ－ＴＺＰ结构陶瓷切口周围存在一个较长的扩展相变塑性区，相变塑性区内拉伸应力方向的塑性应变远大于垂直于拉伸应力方向的塑性应变。所得实验结果为进一步深入研究相变本构关系和相变增韧机理提供了重要的实验依据。
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| 关 键 词： | 云纹干涉法 相变塑性区 ZrO＿2相变多晶体 实验力学 |
EXPERIMENTAL INVESTIGATION OF TRANSFORMAION ZONE IN CERIA-STABILIZED TETRAGONAL ZIRCONIA POLYCRYSTAL |
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| Abstract: | Transformation zone in a single-edge notch bending specimen of ceria-stabilizedtetragonal zirconia polycrystal was studied by moire interferometry.The transformationzone with a characteristic elongated shape ahead of the notch was observed and the distri-bution of plastic strain within the transformation zone was obtained from the moire fringepatterns. This work provides a significant experimental foundation for establishing the the-oretical models of transformation toughening. |
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| Keywords: | moire interferometry Ce-TZP transformation zone plasticity |
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