A smart metal, or memory shape alloy, is an alloy that returns to its cold forged shape after the application of high heat. They have a range of uses in aerospace, surgery, dentistry, piping, robotics and medicine.
manufacturing costs are high and smart metals are not as strong as standard steel.
Smart metals are produced by either casting, vacuum arc welding or induction welding: they are then rolled, stretched, shaped and then quenched or cooled rapidly by cold air. The application of thermal energy returns them to the shape it was in before cooling, and upon cooling will the atoms will realign so that the metal reshapes into the shape it was in after cooling.