Characterization of EN-AW-6061-O–Graphite Nanoflake Composites for Enhanced Mechanical Properties Using Multi-Pass Friction Stir Processing

Patil, Namdev Ashok; Pedapati, Srinivasa Rao; Kakkeri, Shrishail; Pedapati, Santoshi

doi:10.2478/adms-2025-0012

Abstract

In this study, graphite (Gr) nano flakes dispersion with increasing number of passes (1, 2, and 3) inside the resultant aluminium ENAW-6061-O-Gr composites using Friction Stir Processing (FSP) has been accomplished successfully. The objectives were to embed the Gr nanoflakes inside ENAW-6061-O-Gr composites, investigate the effect of number of FSP passes on the mechanical properties of aluminium 6061/graphite composites. The ENAW-6061-O-Gr composite samples were evaluated with tensile tests and elemental analysis through SEM with EDX and mapping. The dispersion and presence of graphite particles is confirmed. Multi-pass FSP improved the tensile strength of the ENAW-6061-O-Gr composites. The UTS of C3-Composite processed with three passes is 153.65 MPa, that is 24% of improvement compared to the unreinforced aluminium ENAW-6061-O base metal alloy.

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Characterization of EN-AW-6061-O–Graphite Nanoflake Composites for Enhanced Mechanical Properties Using Multi-Pass Friction Stir Processing

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