Dynamic fatigue of Y-TZP ceramics at the room temperature

被引：0
|
作者：
Li, Chunguang [1 ,2 ]
Si, Wenjie [1 ]
Zhang, Weifang [2 ]
机构：
[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China
来源：
HIGH-PERFORMANCE CERAMICS IV, PTS 1-3 | 2007年 / 336-338卷
关键词：
zirconia; dynamic fatigue; crack growth exponent; residual stress;
D O I：
10.4028/www.scientific.net/KEM.336-338.2429
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Dynamic fatigue behavior of two kinds of Y-TZP ceramics was investigated at room temperature. The results showed that dynamic fatigue and slow crack growth behaviors exist in zirconias. Crack growth exponents of original and pre-cracked samples were obtained. Crack growth exponents of the two original zirconias are 15.60 and 21.00, respectively. Crack growth exponents of annealed pre-cracked samples are close to the original samples, indicating that the pre-crack experimental method is reasonable and effective. Because of the influence of residual stress indcued by indentation, crack growth exponents of unannealed samples are different from that of original samples. So residual stress should be removed.
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页码：2429 / +
页数：2
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