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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Tailoring Microstructure With Various Heat Treatments (Annealing, Normalizing, and Quenching)

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1. Fine pearlitic microstructure is obtained via

a: Annealing Explanation

Explanation

b: Normalizing Explanation

Explanation

c: Quenching Explanation

Explanation

d: None of the above Explanation

Explanation

2. TTT diagram stands for

a: Temperature - Transition – Time diagram Explanation

Explanation

b: Time- Temperature – Transformation diagram Explanation

Explanation

c: Transformation – Translation – Time diagram Explanation

Explanation

d: Time – Temperature – Transition diagram Explanation

Explanation

3. The shape and composition of the TTT diagram depend on the?

a: Carbon content and microstructure Explanation

Explanation

b: Alloy composition, microstructure, and grain size Explanation

Explanation

c: Alloy composition, grain size, and carbon content Explanation

Explanation

d: None of the above Explanation

Explanation

4. The main effect of quenching on steel is to:

a: Increase ductility and reduce hardness Explanation

Explanation

b: Produce a uniform grain structure Explanation

Explanation

c: Increase hardness by forming martensite Explanation

Explanation

d: Remove carbon from the surface Explanation

Explanation

5. Martensitic transformation is

a: Diffusional Explanation

Explanation

b: Diffusion less Explanation

Explanation

c: Both above Explanation

Explanation

d: None of the above Explanation

Explanation

6. What is the primary purpose of annealing in metals?

a: Increase hardness and strength rapidly Explanation

Explanation

b: Relieve internal stresses and soften the material Explanation

Explanation

c: Convert austenite to martensite Explanation

Explanation

d: Introduce surface oxide layer Explanation

Explanation

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