Time Temperature Transformation(TTT) Curves MCQ’s

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This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Time Temperature Transformation(TTT) Curves”.

1. Which of the following is not a name for time temperature transformation diagrams?
a) S curve
b) C curve isothermal diagram
c) D curve isothermal diagram
d) Bain’s curve

2. Steel with different carbon content shows different time temperature transformation diagrams.
a) True
b) False

3. Time temperature transformation diagrams are drawn for ______________
a) Iron
b) Manganese
c) Any alloy
d) Only steel

4. Which of the following phase will be resulted when the transformation temperature of steel is more than 750 °C?
a) Austenite
b) Pearlite
c) Bainite
d) Martensite

5. Which of the following phase will be resulted when the transformation temperature of steel is in the range of 300 °C to 550 °C?
a) Austenite
b) Pearlite
c) Bainite
d) Martensite

6. Which of the following is the hardest?
a) Austenite
b) Pearlite
c) Bainite
d) Martensite

7. Which of the following phase will be resulted when the transformation temperature of steel is in the range of 500 °C to 750 °C?
a) Austenite
b) Pearlite
c) Bainite
d) Martensite

8. Which of the following phase will be resulted when the transformation temperature of steel is in the range of 100 °C to 300 °C?
a) Austenite
b) Pearlite
c) Bainite
d) Martensite

9. To construct a TTT diagram, the specimen of steels is heated and then cooled.
a) True
b) False

10. In an isothermal curve, which of the following is true when the temperature is increased?
a) The curve shifts rightward
b) The curve shifts leftward
c) The curve goes down
d) The curve goes up

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