1. Discuss the role of cooling rate (from solution treatment temperature to room temperature) on the microstructure of an alloy. You can take an example of Al-Cu or any other alloy of your choice.

2. Discuss the difference in the microstructure of an alloy in three different conditions- a) under age (UA), 2) peak age (PA), 3) over age (OA). Choose a commercial alloy to illustrate the microstructure in these three conditions