Effect of nano-Al2O3 addition and heat treatment on the microstructure and mechanical properties of Mg-(5.6Ti+3Al) composite

Sankaranarayanan, Subramanian K. R. S.; Jayalakshmi, S.; Gupta, Manoj

doi:10.1016/j.matchar.2012.10.005

Cited by 19 publications

(10 citation statements)

References 32 publications

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“…The compressive properties of conventional ceramic (Cr, SiC, Ni 60 Nb 40 , Al 2 O 3 ), metallic (Al, Ti) and CNTs particle reinforced Mg and AZ31 composites are summarized in Table 2. The compressive yield strength of Mg-3Al-1Zn-(Al 2 O 3 -SiC) composites are superior to those of ceramic/metallic/CNTs particles reinforced composites synthesized by powder metallurgy and stir casting methods [27,28,[32][33][34].…”

Section: Compressive Propertiesmentioning

confidence: 99%

Effect of alumina and silicon carbide hybrid reinforcements on tensile, compressive and microhardness behavior of Mg–3Al–1Zn alloy

Rashad

Pan

Guo

et al. 2015

Materials Characterization

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Section: Compressive Propertiesmentioning

confidence: 99%

Effect of alumina and silicon carbide hybrid reinforcements on tensile, compressive and microhardness behavior of Mg–3Al–1Zn alloy

Rashad

Pan

Guo

et al. 2015

Materials Characterization

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“…A number of components in the aircraft interiors, such as passenger seats, overhead compartments, folding tables and food trolleys, and transmission casings, have the potential to use magnesium [4]. Mg nanocomposites with nanometric length scale reinforcements such as ceramic, metallic, and other carbon-based reinforcements, i.e., CNTs (carbon nanotubes) have shown promising results in improving the mechanical, physical, and ignition properties of magnesium [2,5,6]. These nanoparticles were found to have properties that alleviate certain inherent weaknesses of Mg such as limited ductility, creep resistance, and strength but, more importantly, may also be used to incorporate new, desirable, and targeted properties.…”

Section: Introductionmentioning

confidence: 99%

Fe3O4 Nanoparticle-Reinforced Magnesium Nanocomposites Processed via Disintegrated Melt Deposition and Turning-Induced Deformation Techniques

Johanes

Tekumalla

Gupta

2019

Metals

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Magnesium nanocomposites, with nano-scale ceramic reinforcements, have attracted a great deal of attention for several engineering and biomedical applications in the recent past. In this work, superparamagnetic iron oxide nanoparticles, Fe3O4, with their unique magnetic properties and the ability of being bio-compatible and non-toxic, are reinforced to magnesium to form Mg/(1, 2, and 3 wt %) Fe3O4 nanocomposites. These nanocomposites were fabricated using the conventional disintegrated melt deposition (DMD) technique followed by extrusion. Further, the materials were also processed using the novel turning-induced-deformation technique where the chips from turning process are collected, cold compacted, and hot extruded. The materials processed via the two techniques were compared in terms of microstructure and properties. Overall, the Mg/Fe3O4 nanocomposites, processed via both routes, exhibited a superior property profile. Further, the turning-induced deformation method showed promising results in terms of improved properties of the nanocomposites and serves as a great route for the recycling of metallic materials.

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“…[10][11][12][13] Several research works have focussed on using hybrid reinforcements to study their effect on strength and ductility of the nanocomposites. [14][15][16] Recently, Sankaranarayanan et al [17][18][19][20] developed Mg nanocomposites by using micron sized metallic particles hybridised with nano sized ceramic particles as reinforcements. In these works, titanium (Ti) was selected as the metallic reinforcement and it was hybridised with nano sized Al 2 O 3 /SiC/B 4 C ceramic reinforcements.…”

Section: Introductionmentioning

confidence: 99%

Using heat treatment effects and EBSD analysis to tailor microstructure of hybrid Mg nanocomposite for enhanced overall mechanical response

Sankaranarayanan

Sabat

Jayalakshmi

et al. 2014

Materials Science and Technology

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In this study, a detailed investigation on the effect of heat treatment on the microstructural characteristics, texture evolution and mechanical properties of Mg–(5·6Ti+2·5B4C)BM hybrid nanocomposite is presented. Optimised heat treatment parameters, namely, heat treatment temperature and heat treatment time, were first identified through grain size and microhardness measurements. Initially, heat treatment of composites was conducted at temperature range between 100 and 300°C for 1 h. Based on optical microscopic analysis and microhardness measurements, it was evident that significant grain growth and reduction in microhardness occurred for temperatures >200°C. The cutoff temperature that caused significant grain growth/matrix softening was thus identified. Second, at constant temperature (200°C), the effect of variation of heat treatment time was carried out (ranging between 1 and 5 h) so as to identify the range wherein increase in average grain size and reduction in microhardness occurred. Furthering the study, the effect of optimised heat treatment parameters (200°C, 5 h) on the microstructural texture evolution and hence, on the tensile and compressive properties of the Mg–(5·6Ti+2·5B4C)BM hybrid nanocomposite was carried out. From electron backscattered diffraction (EBSD) analysis, it was identified that the optimised heat treatment resulted in recrystallisation and residual stress relaxation, as evident from the presence of ∼87 strain free grains, when compared to that observed in the non-heat treated/as extruded condition (i.e. 2·2 times greater than in the as extruded condition). For the heat treated composite, under both tensile and compressive loads, a significant improvement in fracture strain values (∼60 increase) was observed when compared to that of the non-heat treated counterpart, with ∼20 reduction in yield strength. Based on structure–property correlation, the change in mechanical characteristics is identified to be due to: (1) the presence of less stressed matrix/reinforcement interface due to the relief of residual stresses and (2) texture weakening due to matrix recrystallisation effects, both arising due to heat treatment.

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Effect of nano-Al2O3 addition and heat treatment on the microstructure and mechanical properties of Mg-(5.6Ti+3Al) composite

Cited by 19 publications

References 32 publications

Effect of alumina and silicon carbide hybrid reinforcements on tensile, compressive and microhardness behavior of Mg–3Al–1Zn alloy

Effect of alumina and silicon carbide hybrid reinforcements on tensile, compressive and microhardness behavior of Mg–3Al–1Zn alloy

Fe3O4 Nanoparticle-Reinforced Magnesium Nanocomposites Processed via Disintegrated Melt Deposition and Turning-Induced Deformation Techniques

Using heat treatment effects and EBSD analysis to tailor microstructure of hybrid Mg nanocomposite for enhanced overall mechanical response

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