| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Integration between Modeling and Experiments for Crystalline Metals: From Atomistic to Macroscopic Scales IV
|
| Presentation Title |
A Numerical Study on How Surfaces Bias Relative Slip Family Activity |
| Author(s) |
Ruxin Zhang, Thomas R Bieler, Philip Eisenlohr |
| On-Site Speaker (Planned) |
Philip Eisenlohr |
| Abstract Scope |
Surface observations of dislocation activity have been used in the past to establish relative critical resolved shear stress values. This study demonstrates through crystal plasticity simulations that the reduced constraint at the surface is causing a systematic modulation of relative slip family activity within a boundary layer about one grain deep compared to the bulk behavior. Easily activated (soft) slip families—in particular if those are kinematically incomplete such as hexagonal basal or prism slip—tend to activate relatively more compared to the harder slip families near the surface. |