Nano-ZnO particle addition to monolithic magnesium for enhanced tensile and compressive response

Sankaranarayanan, S and Nayak, Pranav U and Sabat, RK and Suwas, S and Almajid, A and Gupta, M (2014) Nano-ZnO particle addition to monolithic magnesium for enhanced tensile and compressive response. In: JOURNAL OF ALLOYS AND COMPOUNDS, 615 . pp. 211-219.

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Abstract

In this study, the effects of nanoscale ZnO reinforcement on the room temperature tensile and compressive response of monolithic Mg were studied. Experimental observations indicated strength properties improvement due to nanoscale ZnO addition. A maximum increment in tensile yield strength by similar to 55% and compressive yield strength by 90% (with reduced tension-compression asymmetry) was achieved when 0.8 vol.% ZnO nanoparticles were added to Mg. While the fracture strain values under tensile loads were found to increase significantly (by similar to 95%, in case of Mg-0.48ZnO), it remained largely unaffected under compressive loads. The microstructural characteristics studied in order to comprehend the mechanical response showed significant grain refinement due to grain boundary pinning effect of nano-ZnO particles which resulted in strengthening of Mg. Texture analysis using X-ray and EBSD methods indicated weakening of basal fibre texture in Mg/ZnO nanocomposites which contributed towards the reduction in tension-compression yield asymmetry and enhancement in tensile ductility when compared to pure Mg. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF ALLOYS AND COMPOUNDS
Publisher:	ELSEVIER SCIENCE SA
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Keywords:	Mg-metal matrix (nano) composites; Mechanical properties; Microstructure; Texture; X-ray analysis; Electron back scattered diffraction analysis
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	09 Nov 2014 07:08
Last Modified:	09 Nov 2014 07:08
URI:	http://eprints.iisc.ac.in/id/eprint/50209

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