| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Microstructural Influences on Grain Boundary Sliding in High Purity Aluminum |
| Author(s) |
Marissa Linne, Thomas R Bieler, Samantha Daly |
| On-Site Speaker (Planned) |
Marissa Linne |
| Abstract Scope |
The presented work investigates grain boundary sliding (GBS), a grain boundary-enabled deformation mechanism, and its relationship with local plasticity and microstructural neighborhood. GBS is characterized experimentally at grain boundaries in 99.99% aluminum with a through-thickness, coarse-grained microstructure deformed in tension at 190 °C. High-resolution strain fields and microstructural information were measured to examine the influence of microstructural neighborhoods on interactions between GBS and slip transmission and strain localization. The findings include (1) direct transmission and GBS were anti-compatible and facilitated by opposing boundary types (low misorientation and high energy grain boundaries respectively); (2) increased GBS activity was correlated with decreased indirect transmission behavior and (3) GBS accommodation at triple junctions was enabled by intragranular plasticity. This work provides insight into the nature of GBS activity and can be used to identify strain transfer criteria that can lead to improved GBS-sensitive crystal plasticity models. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |