SiCp/Mg composites made by low-energy mechanical processing

Huard, Geoffroy; Angers, R.; Krishnadev, M.R.; Tremblay, R.; Dubé, D.

doi:10.1016/s0008-4433(99)00006-3

Cited by 16 publications

(3 citation statements)

References 14 publications

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“…In addition, many properties in Mg have been improved beyond the limits of alloying, with the use of discontinuous reinforcement [3]. Three approaches that have been tried in recent years to improve the ductility and modulus of Mg are: (a) use of various oxide nanoparticles as well as CNTs for improving ductility [4][5][6], (b) use of metallic particles such as Ti and Mo for improving ductility [7][8][9], and (c) use of micron size ceramic particulates for improving modulus [10,11]. The results of literature search have indicated that no attempt has been made to integrate Mg and Al using solidification processing coupled with hot-extrusion.…”

Section: Introductionmentioning

confidence: 99%

Processing, Microstructure, and Properties of a Mg/Al Bimetal Macrocomposite

Paramsothy

Gupta

Srikanth

2008

Journal of Composite Materials

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A bimetal magnesium/aluminum (Mg/Al) macrocomposite containing millimeter-scale Al core reinforcement was fabricated via casting and hot-extrusion. Characterization revealed that the Al volume fraction was not uniform along the extruded rod length. Major defects were absent, minimal porosity was present and Mg—Al interfacial integrity was good. The thermal stability of macrocomposite sections was marginally improved when compared to pure Mg. Results revealed that the presence of Al core leads to an improvement in average hardness and stiffness of Mg, and an overall improvement in tensile behavior (beyond 7% Al) assessed using work of fracture (WOF) of Mg. For macrocomposite sections containing more than 7% Al, shift in load bearing from Mg to Al at stress levels corresponding to the plastic deformation zone of Mg was indicated in the stepped tensile stress strain curve. An attempt is made to study the effect of presence of mm-scale Al and its variation on the microstructure and mechanical properties of the bimetal Mg/Al macrocomposite.

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Section: Introductionmentioning

confidence: 99%

Processing, Microstructure, and Properties of a Mg/Al Bimetal Macrocomposite

Paramsothy

Gupta

Srikanth

2008

Journal of Composite Materials

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“…In recent years, three methods that have been tried to improve the strength, ductility and modulus of Mg are in use of: (a) various oxide nanoparticles as well as carbon nanotubes for improving strength and ductility [4][5][6], (b) Ti and Mo metallic microparticles for improving ductility [7][8][9] and (c) *Corresponding author: tel. : +65 6516 6358; fax: +65 6779 1459, e-mail address: mpegm@nus.edu.sg SiC ceramic microparticles for improving strength and modulus [10,11]. Among these three methods, nanoparticle addition has proven to be the most promising in improving the overall mechanical properties of Mg.…”

Section: Introductionmentioning

confidence: 99%

Review of superior mechanical and corrosion properties of wrought magnesium based materials containing nanoparticles

Paramsothy¹,

Nguyen²,

Tun³

et al. 2011

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Magnesium is actively used as a lightweight structural metal in the transport industry. Its use ensures lower fuel consumption, reduced CO2 emissions and thus a greener earth. This paper describes the multiple beneficial effects of nanoparticle addition to wrought magnesium based systems. Regarding mechanical properties, the effects are either: (a) enhanced ductility or (b) simultaneously enhanced strength and ductility of magnesium. Regarding material degradation, the beneficial effects include: (a) higher dry oxidation resistance and (b) higher salt water corrosion resistance. The results obtained so far clearly indicate the capability of nanoparticles to enhance the properties of wrought magnesium and its alloys in a way never seen before with micron length scale reinforcements. K e y w o r d s : magnesium alloys, nanoparticles, mechanical properties, corrosion properties

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“…Additionally, based on the use of discontinuous reinforcement, many properties of Mg have been improved beyond the limits of alloying [3]. In recent years, three methods that have been tried to improve the strength, ductility, and modulus of Mg are: (a) use of various oxide nanoparticles as well as CNTs for improving strength and ductility [46], (b) use of metallic particles such as Ti and Mo for improving ductility [79], and (c) use of micron size ceramic particulates for improving strength and modulus [10,11]. Recently, Bayerische Motoren Werke GmbH has manufactured a new Mg/Al bimetal composite crank case for its straight-six cylinder Otto engine using pressure die-casting route where a solid Al alloy insert is almost fully encased in liquid Mg alloy [12].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Performance of Magnesium Alloy AZ31 by Integration with Millimeter Length Scale Aluminium-based Cores

Paramsothy

Hassan

Srikanth

et al. 2009

Journal of Composite Materials

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New bimetal magnesium/aluminium macrocomposites containing millimeter-scale Al-based core reinforcement were fabricated using solidification processing followed by hot coextrusion. Two approaches were attempted for enhancing the performance of AZ31: (a) AZ31 shell integration with pure Al core (pure Al core approach) and (b) AZ31 shell integration with AA5052 core (AA5052 core approach), in that order. In the AA5052 core approach eventually, macrointerface width was increased by 2 orders of magnitude (compared to that in the macrocomposite obtained using the pure Al core approach), while stiffness was increased (+36%), 0.2%YS was unchanged and UTS was increased (+14%) (compared to monolithic AZ31). The evolution of the Mg-Al macrointerface and its effect on microstructure and mechanical properties is investigated in this article.

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SiCp/Mg composites made by low-energy mechanical processing

Cited by 16 publications

References 14 publications

Processing, Microstructure, and Properties of a Mg/Al Bimetal Macrocomposite

Processing, Microstructure, and Properties of a Mg/Al Bimetal Macrocomposite

Review of superior mechanical and corrosion properties of wrought magnesium based materials containing nanoparticles

Enhancing the Performance of Magnesium Alloy AZ31 by Integration with Millimeter Length Scale Aluminium-based Cores

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