Q4
A 0.4 wt% C steel is austenitised at 900°C for 1 hour and heat treated to get different. inicrostructures. Match the following microstructures to the heat treatments. P. Martensite + Retained austenite 1. Annealing Q. Ferrite + fine pearlite 2. Quenching R. Ferrite + spheroidal cementite 3. Quenching + temperature at 600°C S. Ferrite + coarse pearlite 4. Normalising
A 0.4 wt% C steel is austenitised at 900°C for 1 hour and heat treated to get different. inicrostructures. Match the following microstructures to the heat treatments.
| P. Martensite + Retained austenite | 1. Annealing |
| Q. Ferrite + fine pearlite | 2. Quenching |
| R. Ferrite + spheroidal cementite | 3. Quenching + temperature at 600°C |
| S. Ferrite + coarse pearlite | 4. Normalising |
A.
P-4, Q-3, R-2, S-1
B.
P-1, Q-2, R-3, S-4
C.
P-2, Q-4, R-1, S-3
D.
P-2, Q-4, R-3, S-1
AnswerAnswer: Option D
Solution
Answer: Option D
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