Estimate the Brinellhardnesses for specimens of a 1.13 wt% C iron-carbon alloy that have been subjected to the heat treatments described in parts (a), (b), and (c) of Problem 10.21?
Refer to problem 10.21,
(a) Rapidly cool to 250°C (480°F), hold for 103 s, then quench to room temperature.
(b) Rapidly cool to 700°C (1290°F), hold at this temperature for 105 s, then quench to room temperature.
(c) Rapidly cool to 600°C (1110°F), hold at this temperature for 7 s, rapidly cool to 450°C (840°F), hold at this temperature for 4 s, then quench to room temperature?