Permanent plastic deformation of a metal at a The temperature of the forging stock just prior to forging. below its recrystallization point—low enough to produce An increase in hardness and strength caused by plastic deformation at temperatures below the recrystallization range. Also known as work hardening.. Usually, but not necessarily, conducted at room The temperature of the forging stock just prior to forging.. Also referred to as Faults produced in a forging by incorrect tool design or incorrect flow of steel that results in the formation of a crack in the forging surface. forming or Various forging processes conducted at or near ambient temperatures to produce metal components to close tolerances and net shape. These include bending, cold drawing, cold heading, coining, extrusion (forward or backward), punching, thread rolling and others.... More. Contrast with The plastic deformation of metal at such a temperature and strain rate that recrystallization takes place simultaneously with the deformation, thus avoiding any strain hardening. Also referred to as hot forging and hot forming. Contrast with cold working.... More.