| Ti (C,N)基金属陶瓷热震疲劳裂纹扩展速率研究 |
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| 引用本文： | 张剑豪,刘宁,王全.Ti (C,N)基金属陶瓷热震疲劳裂纹扩展速率研究[J].合肥工业大学学报(自然科学版),2000,23(3):318-322. |
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| 作者姓名： | 张剑豪 刘宁 王全 |
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| 作者单位： | 1. 合肥工业大学,材料科学与工程学院,安徽,合肥,230009
2. 合肥工业大学,计算机与信息学院,安徽,合肥,230009 |
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| 基金项目： | 中国科学院资助项目，59502002， |
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| 摘 要： | 在模拟工况条件下,研究了成分、温度及孔洞对Ti (C,N) 基金属陶瓷热冲击疲劳裂纹扩展速率的影响.结果发现:随着ΔT或Ni含量的增加,该材料的热冲击裂纹扩展孕育期缩短,且生长速率上升;热疲劳裂纹的扩展往往是依靠基体孔洞之间的不断连通形成,并且始终是沿着能量最低的方向扩展.
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| 关 键 词： | Ti (C N) 基金属陶瓷 裂纹 孔洞 温度 热冲击疲劳性能 |
| 修稿时间： | 1999-09-01 |
Research on thermal shock fatigue crack propogation rate of Ti(C,N) based cermets |
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| ZHANG Jian-hao,LIU Ning,WANG Quan.Research on thermal shock fatigue crack propogation rate of Ti(C,N) based cermets[J].Journal of Hefei University of Technology(Natural Science),2000,23(3):318-322. |
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| Authors: | ZHANG Jian-hao LIU Ning WANG Quan |
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| Abstract: | The influences of chemical composition, temperature and cavities on the thermal shock fatigue crack propagation rate of Ti(C,N) based cermets are discussed in the modeling conditions of manufacture. Results show as following:With the elevation of the amount of Ni or T,the incubation period of crack will decrease accordingly,but the crack propagation rate will increase;The inter connecting of the cavities in the matrix leads to the formation of thermal fatigue crack ,and the crack propagation direction is always the lowest energy direction. |
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| Keywords: | Ti(C N) based cermet crack cavity temperature thermal shock fatigue property |
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