(a)
Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the nature of the final microstructure,
Cool rapidly to
(b)
Cool rapidly to
(c)
Cool rapidly to
(d)
Reheat the specimen in part (c) to
(e)
Rapidly cool to 300°C (570°F), hold for 20 s, then quench to room temperature in water. Reheat to 425°C (800°F) for 103 s and slowly cool to room temperature.
(f)
Cool rapidly to 665°C (1230°F), hold for 103 s, then quench to room temperature.
(g)
Rapidly cool to 575°C (1065°F), hold for 20 s, rapidly cool to 350°C (660°F), hold for 100 s, then quench to room temperature.
(h)
Rapidly cool to 350°C (660°F), hold for 150 s, then quench to room temperature:
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Chapter 11 Solutions
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