3. Crystal Structure and Defects

Defect Interactions — Quiz

Test your understanding of defect interactions with 5 practice questions.

Practice Questions

Question 1

Which precipitation strengthening mechanism arises from elastic strain fields due to lattice misfit around coherent precipitates that impede dislocation motion?

Question 2

Which process describes the elimination of dislocations of opposite Burgers vectors when they meet on the same slip plane?

Question 3

Which dislocation–point defect interaction leads to the formation of jogs that increase the resistance to dislocation glide?

Question 4

During high-strain deformation, dislocations rearrange into low-energy structures forming what feature that reduces the work-hardening rate?

Question 5

In face-centered cubic metals, which dislocation character has the greatest ability to cross-slip and thus contributes significantly to work hardening at elevated temperatures?