| The effect of intragranular microstress in Al2O3—SiC nanocomposites |
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| 引用本文： | 王志远,吴裕功,佟帅,吴斯骐.The effect of intragranular microstress in Al2O3—SiC nanocomposites[J].中国物理 B,2012,21(6):66501-066501. |
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| 作者姓名： | 王志远 吴裕功 佟帅 吴斯骐 |
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| 作者单位： | School of Electronic and Information Engineering,Tianjin University;Key Laboratory of Advanced Ceramics and Machining Technology,Ministry of Education(Tianjin University) |
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| 基金项目： | Project supported by the Tianjin Natural Science Foundation,China (Grant No. 09JCZDJC22500) |
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| 摘 要： | A theoretical model is established to investigate the intragranular particle residual stress in Al2O3-SiC nanocomposites.Using this model,we calculate the average compressive stress on the Al2O3 grain boundary(GB) and the average tensile stress within Al2O3 grains caused by SiC nanoparticles.The normal compressive stress strengthens the GB,and the average tensile stress weakens the grains.The model gives a reasonable interpretation of the strength changes of Al2O3-SiC nanocomposites with the number of SiC particles.
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| 关 键 词： | nanocomposite grain boundary strengthening internal stress weakening |
| 收稿时间： | 2011-10-08 |
The effect of intragranular microstress in Al2O3-SiC nanocomposites |
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| Wang Zhi-Yuan,Wu Yu-Gong,Tong Shuai,Wu Si-Qi.The effect of intragranular microstress in Al2O3-SiC nanocomposites[J].Chinese Physics B,2012,21(6):66501-066501. |
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| Authors: | Wang Zhi-Yuan Wu Yu-Gong Tong Shuai Wu Si-Qi |
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| Institution: | a. School of Electronic and Information Engineering, Tianjin University, Tianjin 300072, China;b. Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education (Tianjin University), Tianjin 300072, China |
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| Abstract: | A theoretical model is established to investigate the intragranular particle residual stress in Al2O3-SiC nanocomposites. Using this model, we calculate the average compressive stress on the Al2O3 grain boundary (GB) and the average tensile stress within Al2O3 grains caused by SiC nanoparticles. The normal compressive stress strengthens the GB, and the average tensile stress weakens the grains. The model gives a reasonable interpretation of the strength changes of Al2O3-SiC nanocomposites with the number of SiC particles. |
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| Keywords: | nanocomposite grain boundary strengthening internal stress weakening |
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