Development of Aluminium Based Surface Nano Composites Using Friction Stir Processing

TL;DR

This paper presents a novel friction stir processing technique to develop defect-free aluminium-based surface nano composites with enhanced microstructure and mechanical properties, using tungsten and aluminium oxide particles.

Contribution

It introduces a new method for creating aluminium surface nano composites with controlled second phase particles via friction stir processing.

Findings

Successful development of defect-free aluminium nano composites

Enhanced microhardness observed in processed composites

Microstructural analysis confirms uniform distribution of second phases

Abstract

Friction Stir Processing is a relatively new technique which has been developed for microstructural modification of metallic materials through intense, localized plastic deformation. The current research work deals with the development of defect free Aluminium based surface nano composites, with different volume fractions of second phase particles. The work is comprised of development and deformation behavior of aluminium based surface nano composites. Nano-structured second phases of Tungsten and Aluminium oxide were introduced into the Aluminium matrix using a novel unique technique, friction stir processing. Microstructural characterization was done using Scanning Electron Microscopy and Xray Diffraction. Mechanical behavior was evaluated using Vicker's micro hardness. Ultimately structure property correlations were established.