Abstract
This work presents a crystal plasticity modeling framework that accounts for the influence of material interfaces on the plastic behavior of the two crystals on either side of the interface. Within an interface-affected zone (IAZ) extending from both sides of the interface, slip system activity is presumed to be biased towards systems that permit slip transfer across the interface. The preferred slip transfer pathways are determined from the geometric alignment of the slip systems and the stress state within each crystal. The IAZ model is applied to study the plastic stability of Cu-Nb bicrystals under plane strain compression. Our results show that the additional constraints imposed through the enforcement of slip continuity across the interface leads to reduced plastic stability as compared to the case without an IAZ for several of the interfaces studied.
| Original language | English |
|---|---|
| Pages (from-to) | 206-225 |
| Number of pages | 20 |
| Journal | International Journal of Plasticity |
| Volume | 65 |
| DOIs | |
| State | Published - Feb 2015 |
| Externally published | Yes |
Funding
JRM and IJB gratefully acknowledge support by the Center for Materials at Irradiation and Mechanical Extremes, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award No. 2008LANL1026 . CAB and HMM acknowledge the support of the Los Alamos National Laboratory Directed Research and Development (LDRD) Project ER20140348 . Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract DE AC52 06NA25396.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | DE AC52 06NA25396 |
| Office of Science | |
| Basic Energy Sciences | 2008LANL1026 |
| Laboratory Directed Research and Development | ER20140348 |
| Los Alamos National Laboratory |
Keywords
- A. Accumulative roll bonding
- A. Interface stability
- A. Slip transfer
- B. Crystal plasticity
- B. Nanolamellar composites