| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in Multiphysics Modeling and Multi-modal Imaging of Functional Materials
|
| Presentation Title |
Numerical Solution for the Average Velocity of Dislocations Following the Kink-Pair Mechanism |
| Author(s) |
Cathy Bing, Philip Eisenlohr |
| On-Site Speaker (Planned) |
Cathy Bing |
| Abstract Scope |
This study provides a numerical solution to the average velocity of dislocations moving by the kink-pair (kp) mechanism. By simulating the theoretical traces of dislocation segments under a range of kp formation rates and kink velocities, a numerical approximation of the desired function is derived, where the average dislocation velocity is determined by kp formation rate, kink velocity, dislocation segment length, kink width, and kink height. Dependencies such as temperature and load can be determined consequently using chosen constitutive laws of kp formation and kink velocity. This solution is compared to existing velocity models for screw dislocations in BCC metals. The applicability of these velocity models is discussed. |