2. Mechanical Behavior

Plastic Deformation — Quiz

Test your understanding of plastic deformation with 5 practice questions.

Practice Questions

Question 1

Which of the following describes the phenomenon where a material exhibits a decrease in yield strength when the direction of loading is reversed after plastic deformation?

Question 2

In the context of plastic deformation, what is the primary role of a slip system?

Question 3

Consider a metal with a yield strength of $250 \text{ MPa}$ and a strain hardening exponent of $n = 0.2$. If the true stress-true strain relationship is given by the power law: $\sigma_T = K \epsilon_T^n$, what is the strength coefficient ($K$) if the true strain at yield is approximately $0.002$?

Question 4

Which of the following is a primary mechanism controlling plastic flow in amorphous polymers at temperatures below their glass transition temperature ($T_g$)?

Question 5

What is the primary effect of increasing the temperature on the plastic deformation of metals?