About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
| Presentation Title |
A Statistical Model of Microstructural Toughening in Ceramics |
| Author(s) |
Sajjad Hossain, Hunter Brumblay, Alyssa Stubbers, Derek Dupre, Gregory Thompson, Christopher R. Weinberger |
| On-Site Speaker (Planned) |
Christopher R. Weinberger |
| Abstract Scope |
Engineering ceramics are often used in structural applications where their load bearing capability is of critical importance. Furthermore, toughness is often a property that arises from at the microstructural length scale in crystalline ceramics, influenced by the availability cleavage planes and the grain structure. However, there is no model currently that can account for the influence of microstructure on the toughness of ceramic materials. To fill this gap, we have developed a new statistical model that captures the influence of cleavage planes and grain structure on the toughness of brittle materials. This model is able to predict microstructural toughening as a function of the number of grains. It is also able to capture the competition between transgranular and intergranular fracture. To demonstrate the utility of this model, we apply it to fracture of tantalum carbides, a UHTC engineering ceramic. |