(a) Plot a typical stress-strain curve at a given temperature and stress rate and comment on the various segments on the curve. Indicate on the curve the various mechanical properties of the material. How would this curve look if the stress rate was much higher? (b)What property is important in design and selection of the right material? Answer with one or two words. (c) Explain the mechanism by which a given alloy has a higher yield strength if fine-grained rather than coarse-grained. (d) We anneal a rolled aluminum plate at 300oC. Recrystallization and for longer holding times grain growth will occur. What is the driving energy for each one of them? Which one is desirable and which undesirable