| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
ACerS Robert B. Sosman Award Symposium: Bridging the Gap between Atomistic and Continuum Approaches to Interface Science
|
| Presentation Title |
Grain Boundaries in the Wild |
| Author(s) |
Gregory S. Rohrer |
| On-Site Speaker (Planned) |
Gregory S. Rohrer |
| Abstract Scope |
Much of what we know about grain boundaries and the way they move derives from the study of bicrystals using elegant experiments and atomistic simulations. In a bicrystal, the grain boundaries are free to migrate without the constraints imposed by a grain boundary network. In a polycrystal, each boundary is connected to other boundaries at triple lines; the average boundary is connected to five triple lines and 10 other boundaries. In this talk, I will discuss the ways in which grain boundaries in the wild differ from the captive grain boundaries that are usually studied. The role of grain boundary crystallography in grain boundary motion will be discussed, with reference to data from recent high energy diffraction microscopy measurements of grain grain boundary migration velocities. |