Question

Requirement of cross-slip movement of distortion?

• A. Preferred slip plane
• B. Preferred slip direction
• C. No preferred slip plane
• D. No preferred slip direction

Hint:

In materials science, cross-slip is significant for dislocations, as it impacts the material's deformation behavior and helps in understanding the material's strength and ductility.

Answer 1

The Correct Option is C

In materials undergoing plastic deformation, the cross-slip movement refers to the process in which dislocations move from one slip plane to another. This movement is typically not constrained to a preferred slip plane, as the dislocation can change planes depending on the applied stress and material properties. The key factor for cross-slip is the ability of the dislocation to move along various planes, which is not tied to any specific or preferred slip plane. Thus, in the context of cross-slip, the system does not favor a particular slip plane, leading to the correct answer being Option (3) No preferred slip plane.
- Option (1) "Preferred slip plane" is incorrect because cross-slip involves dislocations moving between different planes, not staying on one specific plane.
- Option (2) "Preferred slip direction" is not relevant here, as the question focuses on planes, not directions.
- Option (4) "No preferred slip direction" is also not correct because cross-slip movement is more about the planes than the direction, though directions are influenced.
Therefore, the correct answer is Option (3) No preferred slip plane.