| 约束应力对AD95陶瓷动态硬度的影响 |
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| 引用本文： | 胡欣,王富耻,王扬卫,于晓东,马壮.约束应力对AD95陶瓷动态硬度的影响[J].稀有金属材料与工程,2009,38(Z2). |
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| 作者姓名： | 胡欣 王富耻 王扬卫 于晓东 马壮 |
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| 作者单位： | 北京理工大学,北京,100081 |
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| 摘 要： | 以商用AD95氧化铝陶瓷为研究对象,在不同约束应力下测试材料的动态、静态压痕硬度,同时观察动态、静态压痕的形貌照片以及压痕横截面照片.研究结果表明,AD95陶瓷的动态压痕硬度高于静态,且随着约束应力提高二者均不断增大;约束应力越大,动态硬度提高越明显.因为高应变率条件下的惯性效应和约束应力的耦合作用,使裂纹扩展严重滞后,材料变形抗力大幅提高,动态硬度迅速增加.
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| 关 键 词： | 约束应力 压痕硬度 动态性能 |
Effect of Confined Stress on Dynamic Hardness of Ceramic AD95 |
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| Hu Xin,Wang Fuchi,Wang Yangwei,Yu Xiaodong,Ma Zhuang.Effect of Confined Stress on Dynamic Hardness of Ceramic AD95[J].Rare Metal Materials and Engineering,2009,38(Z2). |
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| Authors: | Hu Xin Wang Fuchi Wang Yangwei Yu Xiaodong Ma Zhuang |
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| Affiliation: | Hu Xin,Wang Fuchi,Wang Yangwei,Yu Xiaodong,Ma Zhuang (Beijing Institute of Technology,Beijing 100081) |
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| Abstract: | The static and dynamic indentation hardness of commercial ceramic AD95 was studied under different levels of confined stress,and the morphology of indentation as well as the cross section were analyzed by SEM. It was found that the value of dynamic indentation hardness was higher than that of its static indentation hardness under the same confined condition,and the hardness increased with the rising of confined stress,especially the dynamic indentation hardness. As the result of the coupling effect of inert... |
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| Keywords: | AD95 confined stress indentation hardness AD95 dynamic property |
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