Starting with a 2inch diameter rod of brass we would like to

Starting with a 2-inch diameter rod of brass, we would like to process 0.2-inch diameter rods that possess minimum yield strength of 40 ksi and a minimum elongation to fracture of 40%, (see the following figure). Design a process that achieves that.

Starting with a 2-inch diameter rod of brass, we would like to process 0.2-inch diameter rods that possess minimum yield strength of 40 ksi and a minimum elongation to fracture of 40%, (see the following figure). Design a process that achieves that.

120 70% Cu-30% Zn 100 Tensile strength 80 e 60 Yield strength 9 40 40 5 D 20 Elongation 0 30 Percent cold work 0 10 20 40 50 50 60

Solution

Hot extrusion to convert into smaller diametr

Cold extrusion to further elongate

Annealing for increasing the ductility

Heat treatment for increasing strength

Cold working for imcreasing fracture toughness