A review on Friction stir processing

Abstract

Friction stir processing (FSP) plays significant role in machining processes due to its potential to substitute various processes like electroplating, cladding, spraying etc. which are in use from many years as common adopted  methods for modification of materials surfaces. Since FSP is conducted in the solid phase under the melting point of the work piece, no arc/fumes, no spatter, no filler required only frictional heat, scale removing method/ secondary methods for surface roughness are required in large scale production. In this paper efforts were made to look what has been done till date in this field of friction stir processing so that it can be decided what is needed to be done to make contribution in this field. The main objective is of this paper is to analyse different mechanical and metallurgical features, such as wear rate, microstructure, micro-hardness and inter-granular corrosion (IGC) by controlling certain parameters like tool rotation, traverse speed & plunge depth and how it effect the mechanical properties, corrosion
resistance & wear performance of orthopaedic implant. The investigation showed that processing route plays important role in obtaining a homogenous structure by uniform distribution of additives grain on the surface of base metal. Further, the fabrication characteristics and mechanical behaviour of surface fabricated by FSW have also been reviewed.