About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Crystal Plasticity Modeling of BCC Metals with Novel Treatment for Dislocation Mobility and Cross-Slip |
Author(s) |
Cathy Bing, Philip Eisenlohr |
On-Site Speaker (Planned) |
Cathy Bing |
Abstract Scope |
The plastic behavior of body-centered cubic (BCC) metals is significantly influenced by the kinetics and structural evolution of lattice dislocations.
In BCC symmetry, the two extreme characters of dislocations, edge and screw, exhibit marked differences in glide and annihilation kinetics, with screw dislocations typically dominating the plastic performance.
The model introduced in this study explicitly separates the mobility and density evolution law of edge and screw dislocation characters in BCC metals to track their distinct influence on the plasticity response.
A novel formula for the average dislocation velocity is applied, and the contribution of cross-slip is investigated in both the mobility and density evolution of screw dislocations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Mechanical Properties, Modeling and Simulation |