Mechanisms of microstructural deformation governing Vickers hardness in phase‐separated calcium aluminosilicate glasses
Mechanisms of microstructural deformation governing Vickers hardness in phase‐separated calcium aluminosilicate glasses
复制标题
相分离铝硅酸钙玻璃中微观结构变形控制维氏硬度的机制
DOI：
10.1111/jace.19112
复制
发表时间：
2023
影响因子：
3.9
通讯作者：
Mauro, John C.
中科院分区：
文献类型：
--
作者：
Clark, Nicholas L.;Chuang, Shih‐Yi;Mauro, John C.
研究了分相钙铝硅酸盐玻璃中显微结构对硬度的影响。硬度的变化由压痕过程中发生的微观结构变形决定。由于液滴相和基体相的不一致屈服，相分离导致硬度降低。此外，具有稀释，球形液滴的微结构的变形没有显着的硬度的影响。微结构的特点是集中，针状液滴被发现变形通过液滴聚结的过程。该过程在屈服过程中吸收额外的能量，并导致通过液滴聚结变形的玻璃具有改善的硬度。
The impact of microstructure on hardness in phase‐separated calcium aluminosilicate glasses is investigated. Changes in hardness are governed by microstructure deformations that occur during indentation. Phase separation leads to decreased hardness due to the incongruent yielding of the droplet and matrix phases. Moreover, the deformation of microstructures possessing dilute, spherical droplets did not have a significant impact on hardness. Microstructures characterized by concentrated, acicular droplets were found to deform through a process of droplet coalescence. This process absorbs additional energy during yielding and results in glasses that deform through droplet coalescence possessing improved hardness.