A single crystal of aluminum was grown in the shape of a tensile bar with the [321] direction aligned with the tensile axis.
A. Sketch a standard cubic projection with [100] at the center and [001] at the North Pole and locate the [321] direction on this projection.
B. Which of the {111} slip system(s) would be most highly stressed when tension was applied along [321]? Show the slip-plane normal(s) and the slip direction(s) of the system(s) on your plot.
C. What will be the ratio of the shear stress on the slip system to the tensile stress applied along [321]?