Question

800 A 1400 Eutectoid temperature 700 A 1200 P 600 1000 500 A 800 400 A 600 300 M(start) 50% 400 200 M+ A M(50%) M(90%) 100 200 105 102 103 104 10-1 10 1 Time (s) Temperature (°C) Temperature (°F) Using the above TTT diagram for the eutectoid composition of steel, enter the relative amount of each microstructure formed for the following heat treatment in the boxes below. Rapidly cool to 625°C, hold for 10s, rapidly cool to 450°C, hold for 10 s, then quench to room temperature. % Pearlite 80 % Bainite % Martensite 0 % Austenite 0 % Tempered Martensite 10 Enter answers as a whole number percent (ie forty-two percent would just be entered as 42). Round to the nearest 5 %-no need for something like 43.2...that would become 45. If there's none of that phase formed, enter a 0 (zero). If it looks close enough then it is. I designed the problem that way; I'm not trying to trick you

Answer 1

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