Experimental Investigation of the Mechanical Properties and Microstructure of Selective Laser Melted Ti-6Al-4V/TiC Composite

S. Kumar; A P Singh; S Selvarajan; S Agarwal; M Gor; N K Maurya

doi:10.5750/ijme.v168iA5(S).1988

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Published: Oct 21, 2026

DOI: https://doi.org/10.5750/ijme.v168iA5(S).1988

Keywords:

Flexural strength Selective laser melting Tensile strength Response surface methodology Micro structural analysis

S. Kumar

Mechanical Engineering, Mangalayatan University, Beswan, Aligarh, Uttar Pradesh, 202146, India

A P Singh

Mechanical Engineering Department, Ajay Kumar Garg Engineering College, Ghaziabad, India

S Selvarajan

Department of Mechanical Engineering, Faculty of Engineering and Technology, JAIN (Deemed-to-be University), Bangalore, Karnataka, India

S Agarwal

Department of Physics, Government Engineering College Kishanganj, Kishanganj, Department of Science, Technology and Technical Education, Patna, India

M Gor

Department of Mechanical Engineering, Faculty of Engineering and Technology, Parul Institute of Engineering and Technology, Parul University, Vadodara, India

N K Maurya

GL Bajaj Institute of Technology and Management, Greater Noida, India

Abstract

This research examines the microstructure and mechanical behavior of Ti-6Al-4V/TiC components produced through
Selective Laser Melting (SLM). Four critical process variables-laser power (250–350 W), scan speed (700–1500 mm/s),
layer thickness (40–60 μm), and hatch spacing (100 –150 μm) were systematically analyzed via Response Surface
Methodology (RSM), and second-order predictive models were built to correlate these parameters with the resulting
mechanical properties. Under optimal processing conditions, the fabricated specimens achieved peak values of 1195.69 MPa in tensile strength and 1284.45 MPa in flexural strength. Microstructural analysis, conducted using SEM, X-ray and EDX, revealed strong interlayer fusion, uniform distribution of alloying elements, and a low incidence of internal defects, while the material’s deformation characteristics were further evaluated through true stress–true strain curves and strainhardening behavior.

Issue

Vol. 168 No. A5(S) (2026): Integrating Innovation Across Disciplines New Paradigms in Multidisciplinary Research

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