annealing
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Annealing is a heat treatment process used to increase the ductility and reduce the hardness of a metal or alloy. The process involves heating the metal or alloy to a specific temperature and then holding it at that temperature for a certain amount of time before cooling it down slowly. This process helps to reduce the internal stress and improve the overall strength and durability of the material. Annealing is commonly used in the manufacturing of steel, aluminum, brass, and copper alloys.