Effect of magnesium on the composition, microstructure and mechanical properties of carbon fibres

Viala, J.C.; Fortier, P.; Claveyrolas, G.; Vincent, H.; Bouix, J.

doi:10.1007/bf00549880

Cited by 31 publications

(11 citation statements)

References 7 publications

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“…In this third example concerning the Mg/C couple, the system is essentially non-reactive [22] and liquid magnesium does not wet carbon, as illustrated by Figure lb. In that case, the objective will then consist in promoting a controlled reaction in order to improve wetting and bonding at the metallfibre interface.…”

Section: Reactivity Control At the Mgic Interfacementioning

confidence: 93%

Interface Tailoring in Carbon Fibres Reinforced Metal Matrix Composites

et al. 1997

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: The fabrication of high perforn~ance metal matrix conlposites reqoires the optinlization of the interfacial bonding, which supposesa strict control of the reactivity and of the wettability between the matrix and the reinforcement, specially for materials produced by casting techniq~ues. In this stop, two methods are described consisting on the one hand, in the surface treatment of carbon fibres by a particular type of CVD and, on the other hand, in modifying the composition of the nlatrix. The two methods can be used either separately or in combination, sucessful tailoring of the interface being the result of thermodynanlic or kinetic effects.

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Section: Reactivity Control At the Mgic Interfacementioning

confidence: 93%

Interface Tailoring in Carbon Fibres Reinforced Metal Matrix Composites

et al. 1997

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“…The two possible magnesium carbides-MgC 2 and Mg 2 C 3 -are highly reactive and thermally unstable. 13,14 The carbide MgC 2 has been reported in a carbon-fibre-reinforced pure Mg composite 15 but this has been questioned by Viala et al, 4 who report that carbon fibres exhibit an almost complete inertness to pure Mg between 700 and 1000 K.…”

Section: Introductionmentioning

confidence: 98%

“…4 It is often observed at the interfaces of C/Mg composites, usually in the form of fine crystals. Badini et al 5 observed MgO contamination of interfaces in a diffusion-bonded composite that decreased towards the core of the sample.…”

Section: Introductionmentioning

confidence: 99%

Microstructural analysis of a carbon fibre reinforced AZ91D magnesium alloy composite

Russell-Stevens

Todd

Papakyriacou³

2005

Surface & Interface Analysis

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Interfacial regions in metal matrix composites are important in controlling the mechanical and thermal properties of these materials. An ultrahigh modulus fibre-reinforced magnesium alloy matrix composite has been studied, with particular attention paid to the interfacial and precipitate microstructures. Fibres were surface treated but uncoated prior to composite manufacture. Observations revealed that an interface consisting of polycrystalline magnesium oxide with occasional Mg 17 Al 12 (b) precipitate particles predominates. Discontinuous b particles formed at fibre surfaces, and continuous spherical and lamellar b precipitates nucleated at grain boundaries and fibre surfaces. High dislocation densities exist at the interface indicating matrix-yielding subsequent to manufacture and that a high mean residual compressive stress acts on fibres. The effect that the observed microstructural features has on composite properties and on interfacial bonding is discussed and compared to examples in the literature.

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“…The strength of CNT-Al metal matrix composites and investigated the relevant strengthening mechanisms involved in CNT-Al composites in order to produce optimized composites was studied George et al [8]. The need for high performance and lightweight materials for some demanding applications has led to extensive efforts in the development of aluminium matrix composites and cost-effective fabrication technologies [9][10][11][12]. They are proved to have good mechanical properties through an incorporation of structural filler (e.g., aluminium oxide, ceramic whiskers such as silicon carbide whisker and others, graphite, carbon fibers and CNTs) With this context, the dimensionally Nano-sized, mechanically strong CNTs [13][14][15][16] are considered as the ideal reinforcing filler in various composite systems [17][18][19][20], have been incorporated into aluminium…”

Section: Introductionmentioning

confidence: 99%

Bending Analysis of CNT Reinforced Metal Matrix Composite Rectangular Plates Using Higher Order Shear Deformation Theory

Patel¹

2017

IJRASET

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I. INTRODUCTIONThe immense need to develop lightweight and high-strength materials for improving energy-efficiency through the weight reduction of transportation carriers. Metal matrix composites (MMCs) generally consist of lightweight metal alloys of aluminum magnesium, or titanium, reinforced with ceramic particulate, whiskers, or fibres. The reinforcement is very important because it determines the mechanical properties, cost, and performance of a given composite. Composites reinforced with particulate (discontinuous types of reinforcement) can have costs to unreinforced metals, with significantly better hardness, and somewhat better stiffness and strength. Continuous reinforcement (long fibre) can result in dramatic improvements in mechanical properties of MMC, but costs remain high. The application of continuously and discontinuously reinforced MMCs varies based on the design requirements. MMCs can be tailored to fulfil requirements that no other materials, including other advanced materials, can achieve. There are a number of niche applications in aerospace structures and electronics that capitalize on this advantage. Aluminium and its alloys have attracted many researchers to choose it as a base metal in metal matrix composites [1]. Aluminium MMCs are widely used in aircraft, aerospace, automobiles and various other fields [2].Al matrix is widely used for CNT reinforced MMCs. Since the work by Zhong et al. [3]. The reinforcements should be stable in the given working temperature and non-reactive too. There are many manufacturing methods to obtain the CNT reinforced Al matrix composites (Al-CNT), amongst which, the powder metallurgy (P/M) technique could be considered as the most effective and economic one. Most of the current Al-CNT composites were fabricated by P/M and significant enhancement in stiffness and strength have been obtained [4][5][6]. A novel method to fabricate CNT-Al composites, which consists of a molecular level mixing process was proposed Cha et al. [7]. The CNT-Al metal matrix composites fabricated by this process improved the hardness due to a load transfer mechanism of the CNTs. The strength of CNT-Al metal matrix composites and investigated the relevant strengthening mechanisms involved in CNT-Al composites in order to produce optimized composites was studied George et al. [8]. The need for high performance and lightweight materials for some demanding applications has led to extensive efforts in the development of aluminium matrix composites and cost-effective fabrication technologies [9][10][11][12]. They are proved to have good mechanical properties through an incorporation of structural filler (e.g., aluminium oxide, ceramic whiskers such as silicon carbide whisker and others, graphite, carbon fibers and CNTs) With this context, the dimensionally Nano-sized, mechanically strong CNTs [13][14][15][16] are considered as the ideal reinforcing filler in various composite systems [17][18][19][20], have been incorporated into aluminium

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Effect of magnesium on the composition, microstructure and mechanical properties of carbon fibres

Cited by 31 publications

References 7 publications

Interface Tailoring in Carbon Fibres Reinforced Metal Matrix Composites

Interface Tailoring in Carbon Fibres Reinforced Metal Matrix Composites

Microstructural analysis of a carbon fibre reinforced AZ91D magnesium alloy composite

Bending Analysis of CNT Reinforced Metal Matrix Composite Rectangular Plates Using Higher Order Shear Deformation Theory

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