____ involves heating the structure of a metal to a high enough temperature to turn it completely austenitic.
A) Normalizing
B) Preheating
C) Stress relieving
D) Annealing

Question

Quizplus · Accepted Answer

Annealing involves heating the structure of a metal to a high enough temperature to turn it completely austenitic. This process is commonly used for softening metals and improving their ductility. Normalizing involves heating the metal to a slightly higher temperature than that used during annealing, followed by cooling in still air. Preheating involves heating the metal prior to any welding or cutting, while stress relieving involves heating the metal to a temperature below its critical range and allowing it to cool slowly to reduce residual stresses.

____ Involves Heating the Structure of a Metal to a High