Question

21. Which heat treatment process is to remove extreme brittleness caused by hardening to an
extent?
a) Annealing
b) Hardening
c) Tempering
d) Normalizing​

Answer 1

Answer:

d) Normalizing​

Explanation:

Heat Treatment  - Heat treatment is the process of metal work which involves both physical and chemical processes. It is basically done in metallurgical industries.

Heat treatment involves many steps as mentioned in the question Annealing,

Hardening,  Tempering, Normalizing​ and many more.

The Normalizing​ part involves the softening of the metal or remove extreme brittleness.

Answer 2

Hardening heat treatment process is to remove extreme brittleness

Explanation:

To obtain the desired result, such as the hardening or softening of the material, the heat treatment involves heating or cooling, usually to extreme temperatures. Thermal treatments include tempering, hardening the shell, solidifying the precipitate, hardening, heating, normalizing and quenching. Hardening requires heating to a lower crucial temperature and then sustaining it at a temperature accompanied by slow cooling to reduce tension and brittleness, thereby increasing flexibility.

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