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1. |
A zinc crystal is strained to point A, unloaded, and then reloaded in the direction opposite to the original slip direction:What is the reason for the drop in shear stress when loaded in the opposite direction? |
A. | Back stress |
B. | Strain hardening |
C. | Increase in the number of slip system |
D. | Slip plane reorientation |
Answer» B. Strain hardening | |