(Solved):
9. Construct a 3D surface plot using Matlab (or any other plotting program) of Rockwell \( \mathrm ...
9. Construct a 3D surface plot using Matlab (or any other plotting program) of Rockwell \( \mathrm{F} \) hardness after annealing (z-axis) \( v s \). actual \( \% \mathrm{CW} v s \). Annealing Temperature (8 temperatures) (in \( \mathrm{x} \) - and \( \mathrm{y} \)-axes). You are not required to include \( 0 \% \mathrm{CW} \), because we did not anneal any bars with \( 0 \% \mathrm{CW} \). The data before annealing should be plotted at \( 200^{\circ} \mathrm{C} \). You are not required to include error bars. Including axis labels with units. Include a figure number, title, and descriptive caption. (15 pts)
10. Does annealing have a greater effect on relative change in hardness in the specimen with \( 40 \% \) CW target or \( 5 \% \) CW target? Why? (Describe both the driving force and the physical mechanism for the change in hardness with annealing). (10 pts)