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Meeting	MS&T24: Materials Science & Technology
Symposium	Advances in Multiphysics Modeling and Multi-modal Imaging of Functional Materials
Presentation Title	Explicit Separation of Edge and Screw Dislocation Mobility and Density Evolution Law in BCC Single Crystal Plasticity Model
Author(s)	Cathy Bing, Philip Eisenlohr
On-Site Speaker (Planned)	Cathy Bing
Abstract Scope	The plastic behavior of body-centered cubic (BCC) single crystals such as niobium (Nb) depends on the kinetics and structure evolution of lattice dislocations. For BCC symmetry, the two extreme characters of edge and screw dislocations exhibit marked differences in their glide velocities and annihilation kinetics, typically resulting in the dominance of the screw character. The model introduced in this study explicitly separates the mobility and density evolution law of edge and screw dislocation characters in BCC single crystal to investigate their distinct influence on the plasticity response.

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