|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deformation and Transitions at Interfaces
||Criteria for Grain Boundary Dislocation Nucleation on Different Slip Systems Obtained by Atomistic Simulations
||Eric R. Homer, Ricky D Wyman
|On-Site Speaker (Planned)
||Eric R. Homer
While it is well known that grain boundaries (GBs) can respond in a variety of ways to imposed deformation, the criteria for each response is not well known. This work models a range of triaxial stress states in atomistic simulations to observe dislocation nucleation on different slip systems. The results examine the local, resolved stresses to develop criteria for GB dislocation nucleation on each slip system. The criterion for each slip system are unique and include non-Schmid effects. The implications of the results are discussed, and potential yield surfaces are developed to aid in the interpretation of the criteria.