Evaluating the Printability and Properties of Graphene-Titanium Composites Fabricated via Selective Laser Melting

Abstract

This study investigates the development, printability, and material characteristics of graphene-reinforced Ti6Al4V composites fabricated via Selective Laser Melting (SLM), with an emphasis on their suitability for high-performance engineering applications. Experimental work involved producing composites with two graphene concentrations (0.5 wt% and 1.5 wt%) to assess their impact on printability, microstructure, and mechanical properties. Techniques such as Scanning Electron Microscopy (SEM), hardness testing were employed to analyze the composites. Results indicated that 0.5 wt% graphene provided more uniform dispersion and improved hardness, while 1.5 wt% led to printing defects, agglomeration, and poor structural integrity. Findings indicate that 0.5 wt% graphene offers optimal mechanical performance and homogeneity, while higher concentrations introduce structural instabilities, porosity, and agglomeration effects. This work contributes to the broader understanding of processing-structure-property relationships in SLM-fabricated titanium composites and supports the advancement of graphene-based reinforcements for next-generation additive manufacturing (AM) applications.