Dear All
When I finished the dislocation analysis, how can I get the specific slip plane direction?
Thanks
Please have a look at this thread here: How to find slip surfaces of HCP atoms?
Yes, you have to distinguish between different types of dislocations and situations:
- There are particular dislocations in some crystal systems, e.g. Shockley partial dislocations in fcc crystals, where the matter is clear. Here the slip plane can be inferred directly from the Burgers vector of the dislocation. The dislocations can only glide in this one plane the dislocation is tied to.
- For other dislocations the situation is more difficult:
(a) If the dislocation is not a pure screw dislocation, you can try to determine the glide plane orientation from the combination of Burgers vector and line tangent (cross product).
(b) For pure screw dislocations, a purely static analysis is not sufficient. The dislocation must be observed in motion in order to determine its slip plane. This is a problem that is the subject of ongoing research. See for example this work:
Sweep-tracing algorithm: in silico slip crystallography and tension-compression asymmetry in BCC metals | Journal of Materials Science: Materials Theory | Full Text