Which heat treatment process is to remove extreme brittleness caused by hardening?
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Answer:
The answer is "Tempering".
Explanation:
A metal goes through both physical and chemical processes in metallurgical industries. When a metal is heated, it becomes too hard and brittle. Therefore, to remove the excessive brittleness tempering is used.
In tempering, the internal stress of the substance or metal is relieved at a specific temperature. During tempering the metal is cooled down slowly in the presence of still air which allows the metal to remove the internal stress and brittleness.
Tempering temperature is kept lower than the hardening temperature and helps the metal to become softer.
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