25) The process used for relieving the internal stresses previously set up in the metal and for increasing the machinability of steel, is
Related Material science MCQ with Answers
All of these
When the steel is normalized, its Yield point increases, Ductility decreases and Ultimate tensile strength increases
Normalizing is a slow cooling process so after casting job is left in air to cool it.
While annealing is very slow cooling process in which job is left in furnace switching it off to relieve residual stresses coming from cold work.
Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys