Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Mokdad, F.; Chen, D.L.; Liu, Z.Y.; Xiao, B.L.; Ni, D.R.; Ma, Z.Y.

doi:10.1016/j.carbon.2016.03.038

Cited by 168 publications

(56 citation statements)

References 74 publications

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“…Lattice parameter ‘c’ of α‐Fe 2 O 3 is estimated to be 13.8211 A 0 . Lattice parameter ‘c’ of α‐Fe 2 O 3 in α‐Fe 2 O 3 /GO composite was slightly reduced to 13.5949 A 0 , contributed to the strain induced by the GO …”

Section: Resultsmentioning

confidence: 99%

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe₂O₃) and Hematite/Graphene Oxide Nanocomposites (α‐Fe₂O₃/GO) at Low Temperature

Satheesh

Paloly

Sagar

et al. 2017

Physica Status Solidi (a)

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α‐Fe2O3 and α‐Fe2O3/graphene oxide (GO) nanocomposites are synthesized by solvothermal method in acetonitrile medium at 200 °C. XRD studies reveals the formation of α‐Fe2O3 and α‐Fe2O3/GO nanocomposites. Raman studies indicate that GO in α‐Fe2O3/GO system was more disordered than GO. The enhanced low temperature magnetic saturation and coercivity in α‐Fe2O3 and α‐Fe2O3/GO are related to frozen canted spins. Blocking temperature of α‐Fe2O3/GO is 348 K, which also shows higher coercivity of the order of about 3064 Oe at 5 K. The α‐Fe2O3/GO composite exhibits thermal hysteresis at Morin transition (ΔTM = 11 K).

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Section: Resultsmentioning

confidence: 99%

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe₂O₃) and Hematite/Graphene Oxide Nanocomposites (α‐Fe₂O₃/GO) at Low Temperature

Satheesh

Paloly

Sagar

et al. 2017

Physica Status Solidi (a)

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“…They prevent dislocation movement and dislocations accumulation around them. The third reason is grain-boundary strengthening mechanism, according to the Hall-Petch equation [60,61], nanoparticles located at grain and nanosized sub-grains boundaries inhibit sticking the grains together and forming larger grains during heating [62]. Hybrid reinforcing nanoparticles cover the whole surface of the aluminum powders and its presence at boundary between powders prevents the grain boundary movement.…”

Section: The Main Affecting Factors On Strengthening Of Hybrid Nanocomentioning

confidence: 99%

Synthesis of WS₂/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

Vaziri

Shokuhfar

Afghahi

2020

Mater. Res. Express

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In this study, a simple, safe and cost-effective method was developed for fabricating the tungsten disulfide/carbon nanotube (WS 2 /CNT) hybrid nanoparticles via chemical vapor deposition (CVD) process. Hybrid nanoparticles used for reinforcing the aluminum matrix. The hybrid nanocomposites were prepared by powder metallurgy processing and consolidated by the Hot-Pressing process. The chemical composition and morphology of the WS 2 /CNT hybrid particles were studied by x-ray diffraction (XRD), filed emission scanning electron microscopy (FESEM), Raman spectra, Fouriertransform infrared spectroscopy (FTIR) and thermo gravimetric analysis (TGA). The results proved that the uniform, pure and tubular WS 2 / CNT hybrid nanoparticles were produced and WS 2 nanoparticles were decorated the CNT surface successfully. Optical microscopy (OM) and FESEM used for characterization of the microstructure of hybrid nanocomposite, indicate a good distribution of hybrid nanoparticles in the aluminum matrix. Maximum values of relative density, hardness and compressive strength were measured for sample with WS 2 /CNT ratio of 1:1. A relative density of more than 99.5% was obtained for this sample. Hardness and compressive strength were improved by 43% and 60% compared with pure aluminum respectively.

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“…It has been generally accepted that the intrinsic properties of both CNTs and Al and the impacts of CNTs on the microstructure of Al matrix determine the mechanical properties of CNT/Al composites simultaneously [1]. For example, according to George et al [2], Nam et al [3] and Mokdad et al [4], the yield strength of CNT/Al composites is considered to be determined by the effective stress transfer to CNTs, grain size (Hall-Petch effect), thermal mismatch dislocations and Orowan mechanism in the Al matrix. However, the plastic deformation mechanisms of CNT/Al composites, being crucial for their ductility and toughness, haven't been fully understood yet.…”

mentioning

confidence: 99%

Back stress in strain hardening of carbon nanotube/aluminum composites

Fan

Tan

et al. 2017

Materials Research Letters

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As demonstrated by the loading-unloading tests and the modeling of the grain size effect and the composite effect, mainly owing to the back stress induced by CNTs, carbon nanotube/aluminum (CNT/Al) composites exhibit higher strain hardening capability than the unreinforced ultrafinegrained Al matrix. The back stress induced by CNTs should arise from the interfacial image force and the long-range interaction between statically stored dislocations and geometrically necessary dislocations around the CNT/Al interface. Therefore, this CNT-induced interfacial back stress strengthening mechanism is supposed to provide a novel route to enhancing the strain hardening capability and ductility in CNT/Al composites. IMPACT STATEMENT The present work investigates the roles and origins of back stress in the strain hardening of the carbon nanotubes/aluminum composites for the first time.

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Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Cited by 168 publications

References 74 publications

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe₂O₃) and Hematite/Graphene Oxide Nanocomposites (α‐Fe₂O₃/GO) at Low Temperature

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe₂O₃) and Hematite/Graphene Oxide Nanocomposites (α‐Fe₂O₃/GO) at Low Temperature

Synthesis of WS₂/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

Back stress in strain hardening of carbon nanotube/aluminum composites

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Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite

Cited by 168 publications

References 74 publications

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe2O3) and Hematite/Graphene Oxide Nanocomposites (α‐Fe2O3/GO) at Low Temperature

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe2O3) and Hematite/Graphene Oxide Nanocomposites (α‐Fe2O3/GO) at Low Temperature

Synthesis of WS2/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

Back stress in strain hardening of carbon nanotube/aluminum composites

Contact Info

Product

Resources

About

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe₂O₃) and Hematite/Graphene Oxide Nanocomposites (α‐Fe₂O₃/GO) at Low Temperature

Improved Coercivity of Solvothermally Grown Hematite (α‐Fe₂O₃) and Hematite/Graphene Oxide Nanocomposites (α‐Fe₂O₃/GO) at Low Temperature

Synthesis of WS₂/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite