____ consists of heating to a point below the lower transformation temperature where new grain growth would occur and holding it for a sufficiently long period to relieve locked-up stresses, then slowly cooling.
A) Preheating
B) Normalizing
C) Stress relieving
D) Annealing

Question

Quizplus · Accepted Answer

The process described in the question is stress relieving, where the material is heated to a temperature below its lower transformation point to relieve locked-up stresses and then slowly cooled. Preheating involves heating the material to a specific temperature before another process, like welding. Normalizing involves heating the material above its upper transformation temperature and then cooling it in air. Annealing involves heating the material above its upper transformation temperature and then slowly cooling it in a furnace.

____ Consists of Heating to a Point Below the Lower