Temperature (°C) 1400 Austenite (stable) Eutectoid temperature 700 Austenite (unstable) 600 500 400 Pearlite 50% Completion curve Completion curve (~100% pearlite) Begin curve (~0% pearlite) 1 10 102 103 104 105 Time (s) 1200 1000 800 Temperature (°F) 9. If a sample of austenite is rapidly cooled from 800°C to 600°C, estimate how much time it would take for pearlite to begin forming.

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