Development and characterization of ductile Mg/Y2O3 nanocomposites

S. F. Hassan; M. Gupta

doi:10.1115/1.2744418

Development and characterization of ductile Mg/Y₂O₃ nanocomposites

S. F. Hassan^*
, M. Gupta

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Nano-Y₂O₃ particulates containing ductile magnesium nanocomposites were synthesized using blend-press-sinter powder metallurgy technique followed by hot extrusion. Micro-structural characterization of the nanocomposite samples showed fairly uniform rein-forcement distribution, good reinforcement-matrix interfacial integrity, significant grain refinement of magnesium matrix with increasing presence of reinforcement, and the presence of minimal porosity. Mechanical properties characterization revealed that the presence of nano-Y₂O₃ reinforcement leads to marginal increases in hardness, 0.2% yield strength and ultimate tensile strength, but a significant increase in ductility and work of fracture of magnesium. The fracture mode was changed from brittle for pure Mg to mix ductile and intergranular in the case of nanocomposites.

Original language	English
Pages (from-to)	462-467
Number of pages	6
Journal	Journal of Engineering Materials and Technology, Transactions of the ASME
Volume	129
Issue number	3
DOIs	https://doi.org/10.1115/1.2744418
State	Published - Jul 2007
Externally published	Yes

Keywords

Ductility
Magnesium
Microstructure
Powder metallurgy
Tensile properties
Yttria

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1115/1.2744418

Cite this

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title = "Development and characterization of ductile Mg/Y2O3 nanocomposites",

abstract = "Nano-Y2O3 particulates containing ductile magnesium nanocomposites were synthesized using blend-press-sinter powder metallurgy technique followed by hot extrusion. Micro-structural characterization of the nanocomposite samples showed fairly uniform rein-forcement distribution, good reinforcement-matrix interfacial integrity, significant grain refinement of magnesium matrix with increasing presence of reinforcement, and the presence of minimal porosity. Mechanical properties characterization revealed that the presence of nano-Y2O3 reinforcement leads to marginal increases in hardness, 0.2\% yield strength and ultimate tensile strength, but a significant increase in ductility and work of fracture of magnesium. The fracture mode was changed from brittle for pure Mg to mix ductile and intergranular in the case of nanocomposites.",

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AU - Hassan, S. F.

AU - Gupta, M.

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AB - Nano-Y2O3 particulates containing ductile magnesium nanocomposites were synthesized using blend-press-sinter powder metallurgy technique followed by hot extrusion. Micro-structural characterization of the nanocomposite samples showed fairly uniform rein-forcement distribution, good reinforcement-matrix interfacial integrity, significant grain refinement of magnesium matrix with increasing presence of reinforcement, and the presence of minimal porosity. Mechanical properties characterization revealed that the presence of nano-Y2O3 reinforcement leads to marginal increases in hardness, 0.2% yield strength and ultimate tensile strength, but a significant increase in ductility and work of fracture of magnesium. The fracture mode was changed from brittle for pure Mg to mix ductile and intergranular in the case of nanocomposites.

KW - Ductility

KW - Magnesium

KW - Microstructure

KW - Powder metallurgy

KW - Tensile properties

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