Test Academy | Match the following. Heat treatment Effect P: Tempering 1. Strengthening Q: Quenching 2. Toughening R: Annealing 3. Hardening S: Normalizing 4. Softening P-2, Q-3, R-4, S-1, P-1, Q-1, R-3, S-2, P-3, Q-3, R-1, S-3, P-4, Q-3, R-2, S-1

Question

Match the following.

Heat treatment		Effect
P:	Tempering	1.	Strengthening
Q:	Quenching	2.	Toughening
R:	Annealing	3.	Hardening
S:	Normalizing	4.	Softening

Options :

P-2, Q-3, R-4, S-1
P-1, Q-1, R-3, S-2
P-3, Q-3, R-1, S-3
P-4, Q-3, R-2, S-1

Show Answer

Answer :

P-2, Q-3, R-4, S-1

Solution :

Heat treatment :

- Heat treatment operation can be defined as heating a metal or alloy to various definite temperatures, holding these for the various time durations and cooling at various rates to get the desired grain structure and property in the metal or alloy.

PROCESS	FUNCTION
Normalizing	It produces a uniform grain structure, so that strength could be improved. It removes cold and hot working stresses.
Annealing	It softens the material and brings about required changes in properties such as Machinability, Mechanical or Electrical properties.
Quenching	It increases the strength of the metal and increases wear resistance and hardenability but makes the metal brittle and of low ductility.
Tempering	It restores ductility and reduces hardness. Increased toughness is obtained at the expense of high strength.
Case hardening (carburizing)	It is a process of hardening the outer portion of the metal while the core remains soft and tough.

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