Characterisation of damage mechanisms in oxide ceramics indented at dynamic and quasi-static strain rates
Characterisation of damage mechanisms in oxide ceramics indented at dynamic and quasi-static strain rates
复制标题
动态和准静态应变率下压痕氧化物陶瓷损伤机制的表征
DOI：
10.1016/j.jeurceramsoc.2019.06.054
复制
发表时间：
2019
影响因子：
5.7
通讯作者：
Dancer C
中科院分区：
文献类型：
--
作者：
Dancer C
已知陶瓷材料在冲击下表现出速率依赖性行为。试验建立应变率依赖的损伤机制的变化已经进行了退化氧化铝，氧化铝-氧化锆复合材料，和3 Y-TZP。使用相同的尖锐硬化钢射弹动态和准静态地对材料进行压痕，同时记录载荷分布。使用扫描电子显微镜和piezospectroscopic映射的尖锐和钝的压痕类型的典型特征进行了观察。在动态应变率的压痕的深度和材料中的残余应力均低于准静态测试。这是由于温度引起的软化的弹丸。在3 Y-TZP样品中观察到不寻常的行为，这是由于在机械加载过程中从四方晶系到单斜晶系的可逆转变。这些效果和所观察到的抗冲击的上级机械强度表明，氧化锆或氧化锆复合材料在用作陶瓷装甲材料时可能具有优于低基氧化铝的优点。
Ceramic materials are known to display rate dependent behaviour under impact. Tests to establish the strain-rate dependent variations in damage mechanisms have been carried out on debased alumina, an alumina-zirconia composite, and 3Y-TZP. Materials were indented dynamically and quasi-statically using identical sharp hardened steel projectiles while recording the load profile. Characteristics typical of both sharp and blunt indentation types were observed using scanning electron microscopy and piezospectroscopic mapping. At dynamic strain rates both the depth of the indentation and the residual stress in the material were lower than for quasi-static tests. This was attributed to temperature-induced softening of the projectile. Unusual behaviour was observed in the 3Y-TZP samples due to the reversible transformation from tetragonal to monoclinic crystal structures during mechanical loading. These effects and the observed superior mechanical strength against impact suggest that zirconia or zirconia-composite materials may have advantages over debased alumina for application as ceramic armour materials.
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影响因子：
9.4
作者：
Deville, S;Guénin, G;Chevalier, K
通讯作者：
Chevalier, K
通过 Cr3 荧光映射测量氧化铝陶瓷中高应变率压痕引起的变形
影响因子：
5.7
作者：
Dancer C
通讯作者：
Dancer C
DOI：
--
发表时间：
2011
期刊：
Proceedings of the 35th International Conference on Advanced Ceramics and Composites
影响因子：
--
作者：
Dancer CEJ
通讯作者：
Dancer CEJ
影响因子：
4.5
作者：
Healey, Adam;Cotton, John;Yeomans, Julie
通讯作者：
Yeomans, Julie
影响因子：
4
作者：
Akiyama, M;Xu, CN;Nonaka, K
通讯作者：
Nonaka, K