What is meant by friction stir processing?

Friction stir processing (FSP) is a method of changing the properties of a metal through intense, localized plastic deformation. This deformation is produced by forcibly inserting a non-consumable tool into the material, and revolving the tool in a stirring motion as it is pushed laterally through the material. This type of processing gives superior strength and formability to the product. Visit our friction stir welding page to learn more.