Home FOR AUTHORS Kovove Materialy-Metallic Materials 2019 Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 4, pp.237–246

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Kovove Materialy-Metallic Materials Vol. 57 (2019), no. 4, pp.237–246

Title: Mechanical and wear properties of Mg/Mo nanocomposites
Author: M. John Iruthaya Raj, K. Manisekar, M. Gupta

Abstract: This study investigates the microstructural, mechanical, and wear behaviour of magnesium/
nano-molybdenum composites synthesized using microwave assisted powder metallurgy
technique. Effects of varying amount of nano-sized molybdenum particles on magnesium matrix
were studied. Microstructural studies of extruded nanocomposites exhibited a reasonably
uniform distribution of molybdenum particles with the presence of minor clusters. Mechanical
characterization of Mg/Mo nanocomposites showed improved hardness, tensile and compressive
strengths while failure strain of magnesium matrix was adversely affected. Tensile
fractured surfaces displayed the presence of micropores and microcracks while compressive
fractured samples showed shear band formation. Results of sliding wear tests revealed that
the increasing presence of nano Mo reinforcement reduced the wear rate. Worn surface of
the composite specimens after the wear tests showed abrasion, delamination, oxidation, and
adhesion as primary wear mechanisms.

Keywords: wear, microstructure, sintering, extrusion, characterization, nanocomposites, hardness, magnesium
Published online: 25-Jun-2019
Year: 2019, Volume: 57, Issue: 4 Page From: 237, Page To: 246

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