What is the name of the metal processing technique performed above recrystallization temperature to prevent internal stress?

The metal processing technique performed above the recrystallization temperature to prevent internal stress is known as hot working. During hot working, metals are deformed plastically at high temperatures, which allows the material to flow and reshape easily. This process helps to refine the grain structure of the metal, leading to improved ductility and strength while avoiding the buildup of internal stresses that can occur when working with materials at lower temperatures.

Hot working is particularly beneficial because it enables the metal to maintain a uniform temperature throughout the deformation process, which facilitates easier manipulation and less risk of fracturing. Additionally, because the material is above its recrystallization temperature, any dislocations generated during deformation can be eliminated through dynamic recrystallization, resulting in a finer and more consistent grain structure. This makes hot working a preferred method for shaping metals in various manufacturing applications.