Describe the microstructure present in a 1050 Steel after each step in the follo

Question

Describe the microstructure present in a 1050 Steel after each step in the following heat treatments:

(a) heat at 850 C, quench to 650 C and hold for 300 s, and quench to 25 C

(b) heat at 850 C, quench to 450 C and hold for 100 s, and quench to 25 C

(c) heat at 850 C, and quench to 25 C

(d) heat at 820 C, quench to 400 C and hold for 10 s, and quench to 25 C

Describe the microstructure present in a 1050 Steel after each step in the following heat treatments: (a) heat at 850 C, quench to 650 C and hold for 300 s, and quench to 25 C (b) heat at 850 C, quench to 450 C and hold for 100 s, and quench to 25 C (c) heat at 850 C, and quench to 25 C (d) heat at 820 C, quench to 400 C and hold for 10 s, and quench to 25 C

Explanation / Answer

1. alpha + pearlite

2. gamma + alpha + pearlite

3. Martensite

4. gamma + bainite

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