| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Integration between Modeling and Experiments for Crystalline Metals: From Atomistic to Macroscopic Scales III
|
| Presentation Title |
Investigating the Mechanical Properties of Grain Boundaries with Displacement Texture Analysis |
| Author(s) |
Anqi Qiu, Ian Chesser, Elizabeth Holm |
| On-Site Speaker (Planned) |
Anqi Qiu |
| Abstract Scope |
Isolated cylindrical grains in metallic systems shrink under curvature driving force at high temperatures. With molecular dynamics simulations, we observed the rotations of isolated cylindrical grains towards higher or lower initial misorientations along with the shrinking, depending on the initial misorientations and temperature, due to shear-coupling. In previous works, we have shown that the calculated mobility of a cylindrical grain boundary at finite temperature is wide-ranging with respect to initial velocity seeds, in contrary to the common belief that the mobility is constant. The rotation behavior also varies greatly with initial velocity seeds. Displacement texture analysis has previous been used to decipher shear-shuffling and min-shuffling patterns. In this work, we apply displacement texture analysis to examine the motions of cylindrical boundaries moving freely, under blocked motion, and under cyclic torque. This gives more insights into the motion mechanisms and mechanical properties of cylindrical grain boundaries. |