Annealing requires heating to and holding at a suitable temperature and then cooling
at a suitable rate, for such purposes as reducing hardness, improving machinability, facilitating cold
working, producing a desired microstructure (for subsequent operations) or obtaining desired
mechanical, physical, or other properties. other common names and related subjects are: black
annealing, intermediate annealing, isothermal annealing, malleabilizing, process annealing, quench
annealing, recrystallization annealing, and spheroidizing.