| ZTM15(2Y)/Al2O3材料低温时效的研究 |
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| 引用本文： | 蔡舒,袁启明,孟佳宏,陈玉如,杨正方.ZTM15(2Y)/Al2O3材料低温时效的研究[J].材料工程,2001(4):16-18. |
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| 作者姓名： | 蔡舒 袁启明 孟佳宏 陈玉如 杨正方 |
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| 作者单位： | 天津大学材料学院无机非金属材料系, |
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| 基金项目： | 教育部重点实验室基金，美国3M公司资助项目，99150，，， |
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| 摘 要： | 在AZTM15（2Y）中加入Al2O3粒子，可以改善材料的微观结构，使ZTM15（2Y）材料的室温力学性能提高，尤其是材料的断裂韧性，由4.0MPalm1/2增至7.8MP.^1/2,其主要贡献源于微鲜明纹增韧，但由于Al2O3粒子的引入，增加了ZTM15（2Y)基体中微裂纹的密度，所以不能有效抑制TM15（2Y）材料低温时效处理力学性能下降现象，相反，将另速材料力学性能的退化。
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| 关 键 词： | 时效热处理 力学性能 莫来石 氧化铝 ZTM15（2Y）材料 低温时效 |
| 文章编号： | 1001-4381(2001)04-0016-03 |
| 修稿时间： | 2000年8月25日 |
Study on the Low-temperature Ageing of ZTM15(2Y)/Al2O3 Composites |
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| CAI Shu,YUAN Qi-ming,MENG Jia-hong,CHEN Yu-ru,YANG Zheng-fang.Study on the Low-temperature Ageing of ZTM15(2Y)/Al2O3 Composites[J].Journal of Materials Engineering,2001(4):16-18. |
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| Authors: | CAI Shu YUAN Qi-ming MENG Jia-hong CHEN Yu-ru YANG Zheng-fang |
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| Abstract: | A microstructure with a narrow ZrO2 grain size distribution in the fine mullite grain matrix was obtained by the addition of 5vol%～10vol%Al2O3 particles.The effect of Al2O3 particles on the low tempe-rature ageing of ZTM15(2Y)/Al2O3 composites was studied. The result shows that compared with ZTM15(2Y), the room temperature mechanical properties of ZTM15(2Y)/Al2O3 composites, especially the toughness, are remarkably improved, and toughness could reach 7.8MPa*m1/2. The microcraking is the dominant toughening mechanism. The addition of Al2O3 particles could not inhibit the degradation behavior of ZTM15(2Y) because of the increase of microcraks, on the contrary, enhanced t-m transformation during ageing. |
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| Keywords: | Al 2O 3 particles ageing treatment mechanical properties |
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