Tip for Problem 1

The attached Word File has the stress strain curves for 6 different materials (3 copper alloys and 3 steel alloys).

• For each material determine the ductility, maximum strain, modulus, ultimate tensile strength and yield strength
• Based on these findings compare the how copper and steel are affected by elevated temperature exposure. Use the relative force required to reduce the height of a bar by 5% through open die forging as part of this comparison.

To help you prepare the answer consider the following.

• What are the definitions of each of the five material properties?
• How are the values of each determined from a stress-strain curve? (make sure you show your work)
• Consider making a table with the mechanical properties and relative forging forces.
• Relative force means normalized to the highest required force.
• Reference the presentation, your notes, and your in-class problem work,