[Kovove materialy - Metallic materials]
    Fri - April 12, 2024 - 23:41 No. of hits : 1740515 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 57 (2019), Issue 4

Mechanical and wear properties of Mg/Mo nanocomposites
JOHN IRUTHAYA RAJ, M., MANISEKAR, K., GUPTA, M.
vol. 57 (2019), no. 4, pp. 237 - 246
DOI: 10.4149/km_2019_4_237

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.

Key words
wear, microstructure, sintering, extrusion, characterization, nanocomposites, hardness, magnesium

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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