Work Hardening is a process used in materials science to increase the strength and hardness of a metal or alloy through plastic deformation. When a material is subjected to stress, its internal structure changes, making it more resistant to further deformation. This is commonly seen in metals like steel and copper, which become tougher as they are worked or shaped. The process occurs during activities such as forging, rolling, or drawing, where the material is mechanically manipulated. As the material is deformed, dislocations within its crystal structure multiply, leading to increased resistance to future deformation. This property is essential in various applications, including construction and manufacturing.