Determine the transformation products and the approximate % after each step for the following three cooling...

   

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Determine the transformation products and the approximate % after each step for the following three cooling paths. We are assuming a steel with eutectoid composition that is initially equilibrated at 730 C. (a) i. Quench to 650C and hold for 100 seconds. ii. Cool to room temperature. (b) i. Quench to 650C and hold for 2 seconds (2= 10.3). ii. Cool to room temperature. (c) i. Quench to 400C and hold for 25 seconds (25= 10-4). ii. Cool to room temperature. (d) i. Quench to 400C and hold for 3.16 seconds (3.16 = 10.5). ii. Cool to room temperature. Temperature (C) 800 700 600 500 400 300 200 M(start) M(50%) MOONL 1117 M+A Eutectoid temperature P B 50% 1400 1200 1000 800 600 400 Temperature (F) Determine the transformation products and the approximate % after each step for the following three cooling paths. We are assuming a steel with eutectoid composition that is initially equilibrated at 730 C. (a) i. Quench to 650C and hold for 100 seconds. ii. Cool to room temperature. (b) i. Quench to 650C and hold for 2 seconds (2= 10.3). ii. Cool to room temperature. (c) i. Quench to 400C and hold for 25 seconds (25= 10-4). ii. Cool to room temperature. (d) i. Quench to 400C and hold for 3.16 seconds (3.16 = 10.5). ii. Cool to room temperature. Temperature (C) 800 700 600 500 400 300 200 M(start) M(50%) MOONL 1117 M+A Eutectoid temperature P B 50% 1400 1200 1000 800 600 400 Temperature (F)

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a i Quench to 650C and hold for 100 seconds Pearlite ap... View the full answer