Effect of niobium particulate addition on the microstructure and mechanical properties of pure magnesium

Shanthi, M.; Jayaramanavar, P.; Vyas, Vikash Kumar; Seenivasan, D.V.S.; Gupta, Manoj

doi:10.1016/j.jallcom.2011.10.019

Cited by 29 publications

(22 citation statements)

References 27 publications

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“…Under tensile loading, pure Mg exhibits dominant cleavage fracture due to its h.c.p. structure [19], whereas dimple-like ductile features were reported in Mg-5Nb [8]. In the Mg-5Nb-SiC n composites, dominant cleavage fracture with brittle morphology is seen (Figure 6a, c).…”

Section: Mechanical Propertiesmentioning

confidence: 89%

“…Increasing the Nb content (wt. %) to 10% and 15% enhanced the strength but drastically reduced the fracture strain [8].…”

Section: Introductionmentioning

confidence: 94%

“…It should be noted that there are several factors that can contribute to particle clustering (often referred to as "particle local inhomogenity" [16], that include: (i) processing parameters such as insufficient melt stirring time, low melt temperature or low solidification rate; (ii) poor wettability between the particle/matrix; (iii) irregular shape of the particle and (iv) chemical incompatibility between the particle/matrix [16][17][18]. [19] Mg-5Nb [8] Mg-5Nb-0.25SiC n (0.13% V f ) Mg-5Nb-0.50SiC n (0.27% V f ) Mg-5Nb-1.0 SiC n (0.55% V f ) Mg-5Nb-2.0 SiC n (1.10% V f )…”

Section: Macrostructure and Densitymentioning

confidence: 99%

“…These are considered as metallic reinforcements [6,7]. Recently, addition of varying weight fractions of Nb in pure Mg was studied [8]. It was reported that the addition of 5 wt.% Nb to pure Mg significantly improved the failure strain, with little/no improvement in the strength properties.…”

Section: Introductionmentioning

confidence: 99%

“…Taking into consideration the high ductility reported for Mg-5Nb metal-metal composite [8], the aim of this study is to investigate the effect of nano-SiC reinforcements on its microstructure and mechanical properties. Mg-5 wt.% Nb metal-metal composite reinforced with four volume fractions (0.13%, 0.27%, 0.55% and 1.1% V f ) of nano-scale SiC particles (SiC n ) were prepared using the disintegrated melt deposition technique (DMD) [9], followed by hot extrusion.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Mg-5Nb Metal-Metal Composite Reinforced with Nano SiC Ceramic Particles

Jayalakshmi

Loh

Seetharaman

et al. 2012

Metals

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Abstract:In this work, a Mg-5Nb metal-metal composite was reinforced with nano SiC (SiC n ) ceramic reinforcement of varying volume fractions, using the disintegrated melt deposition technique. The extruded Mg-5Nb-SiC n composites were characterized for their microstructure and mechanical properties. Based on the results obtained, it was observed that the volume fraction of nano-SiC reinforcement played an important role in determining the grain size and improving the mechanical properties. A comparison of properties with those of pure Mg and Mg-5Nb composite showed that while the improvement in hardness occurred at all volume fractions, a minimum volume fraction of ~0.27% SiC n was required to increase the tensile and compressive strengths. The observed mechanical response of the composites were investigated in terms of the effect of SiC n volume fraction, processing, distribution of metallic and ceramic reinforcements and the inherent properties of the matrix and reinforcements. The influences of these factors on the mechanical behavior of the composites are understood based on the structure-property relationship.

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Section: Mechanical Propertiesmentioning

confidence: 89%

“…Increasing the Nb content (wt. %) to 10% and 15% enhanced the strength but drastically reduced the fracture strain [8].…”

Section: Introductionmentioning

confidence: 94%

Section: Macrostructure and Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microstructure and Mechanical Properties of Mg-5Nb Metal-Metal Composite Reinforced with Nano SiC Ceramic Particles

Jayalakshmi

Loh

Seetharaman

et al. 2012

Metals

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Effect of High‐Energy Ball Milling on Mechanical Properties of the Mg–Nb Composites Fabricated through Powder Metallurgy Process

Vahid

Hodgson

2017

Adv Eng Mater

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New biocompatible and biodegradable Mg-Nb composites used as bone implant materials are fabricated through powder metallurgy process. Mg-Nb mixture powders are prepared through mechanical milling and manual mixing. Then, the Mg-Nb composites are fabricated through cold press and sintering processes. The effect of mechanical milling and Nb particles as reinforcements on the microstructures and mechanical properties of Mg-Nb composites are investigated. The mechanical milling process is found to be effective in reducing the size of Mg and Nb particles, distributing the Nb particles uniformly in the Mg matrix and obtaining Mg-Nb composite particles. The Mg-Nb composite particles can be bound together firmly during the sintering process, result in Mg-Nb composite structures with no intermetallic formation, lower porosity, and higher mechanical properties compared to composites prepared through manual mixing. Interestingly, the mechanical properties of manually mixed Mg-Nb composites appear to be even lower than that of pure Mg.

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Metal Matrix Nanocomposites: An Overview

Ceschini

Dahle

Gupta

et al. 2016

Engineering Materials

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Effect of niobium particulate addition on the microstructure and mechanical properties of pure magnesium

Cited by 29 publications

References 27 publications

Microstructure and Mechanical Properties of Mg-5Nb Metal-Metal Composite Reinforced with Nano SiC Ceramic Particles

Microstructure and Mechanical Properties of Mg-5Nb Metal-Metal Composite Reinforced with Nano SiC Ceramic Particles

Effect of High‐Energy Ball Milling on Mechanical Properties of the Mg–Nb Composites Fabricated through Powder Metallurgy Process

Metal Matrix Nanocomposites: An Overview

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