Enhanced Mechanical Properties of Stainless Steel 316 L via Friction Stir Processing
Friction stir processing (FSP) is a solid state process to modify microstructure and mechanical properties of sheet metals and as-cast materials. In this process stirring action of the tool causes the material to intense plastic deformation that yields a dynamical recrystalyzation. In this study the effect of FSP and process parameters on hardness, and microstructure of stainless steel 316L has been investigated. Also by using of FSP, a composite layer of 316L/SiC has been produced. Results show that FSP leads to a finer and homogenized grain structure, as well as increased hardness, strength, toughness, and elongation at failure of the material. The composites produced by FSP have a uniform distribution of SiC particles between the grains of the base metal.
Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado
R. Salekrostam and M.K. B. Givi, "Enhanced Mechanical Properties of Stainless Steel 316 L via Friction Stir Processing", Defect and Diffusion Forum, Vols. 297-301, pp. 215-220, 2010