Strain hardening behaviour and temperature effect on Al-2124/SiCp

Martín, Enric; Forn, Antonio; Nogué, R.

doi:10.1016/s0924-0136(03)00292-9

Cited by 27 publications

(8 citation statements)

References 10 publications

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“…The model was applied to the real case of the 2124 aluminum alloy reinforced with SiC particles studied in [27]. The composite contains 17 vol.% SiC particles of an average size of 1.4 µm.…”

Section: Application To Experimental Datamentioning

confidence: 99%

An elastoplastic three-dimensional homogenization model for particle reinforced composites

Galli

Botsis

Janczak‐Rusch

2008

Computational Materials Science

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A model for the homogenization of the elastoplastic properties of particle reinforced composites is proposed. The microstructure is described by means of a novel technique, consisting of generating particles in a pre-existent constrained Delaunay tetrahedralization of a cubic volume by means of a modified random adsorption algorithm. This technique allows generating models with different amounts of reinforcement by using the same finite element mesh. The obtained particle morphology is similar to that of many ceramic powders often used as reinforcement. Homogenization is carried out for a typical particle reinforced metal matrix composite with reinforcement volume fractions up to 0.25 and the representative volume element size is assessed for both elastic and elastoplastic behaviours. In this latter case the representative volume element size depends on the amount of plastic strain which develops in the matrix material and a criterion to assess the model representativeness is proposed based on the amount of elastic energy stored in the composite. The predictions of the model compare well with pertinent experimental data reported in literature.

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Section: Application To Experimental Datamentioning

confidence: 99%

An elastoplastic three-dimensional homogenization model for particle reinforced composites

Galli

Botsis

Janczak‐Rusch

2008

Computational Materials Science

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“…Its high strength, fatigue resistance and hardness at elevated temperatures make this composite a successful candidate for automotive engine components such as valve train, pistons, cylinder liners or connecting rods [3], [4]. Properties of this composite such as strain hardening at different temperatures are reported in [5] while the behaviour under monotonic and cyclic loading conditions in [6], [7]. Wear resistance of this material has been reported to be higher than other AA2124 matrix composites [8].…”

Section: Introductionmentioning

confidence: 99%

Lower Cost Automotive Piston from 2124/SiC/25p Metal-Matrix Composite

Falsafi

Rosochowska

Jadhav

et al. 2017

SAE Int. J. Engines

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Engineered materials have made a breakthrough in a quest for materials with a combination of custom-made properties to suit particular applications. One of such materials is 2124/SiC/25p, a high-quality aerospace grade aluminium alloy reinforced with ultrafine particles of silicon carbide, manufactured by a powder metallurgy route. This aluminium matrix composite offers a combination of greater fatigue strength at elevated temperatures, lower thermal expansion and greater wear resistance in comparison with conventionally used piston materials. The microscale particulate reinforcement also offers good formability and machinability. Despite the benefits, the higher manufacturing cost often limits their usage in high-volume industries such as automotive where such materials could significantly improve the engine performance. This paper presents mechanical and forging data for a lower cost processing route for metal matrix composites. Finite element modelling and analysis were used to examine forging of an automotive piston and die wear. This showed that selection of the forging route is important to maximise die life. Mechanical testing of the forged material showed a minimal reduction in fatigue properties at the piston operating temperature.

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“…18 The fabrication of a MMC with various ceramic particles such as Si 3 N 4 , TiB 2 , B 4 C and machining the fabricated MMC individually was analysed by many researchers. [19][20][21] Fabrication by the pressure-less infiltration process under a nitrogen gas atmosphere and the grinding of the aluminium-based MMC reinforced with SiC particles show that the physical and chemical compatibility between the SiC particles and the Al matrix is the main concern in the preparation of SiC/Al composites. 22 Due to the low coefficients of thermal expansion for maximizing heat dissipation and minimizing thermal stress, high-performance thermal management materials are most commonly used in the packaging of microprocessors, power semiconductors, high-power laser diodes, light-emitting diodes and micro-electromechanical systems.…”

Section: Introductionmentioning

confidence: 99%

Machining parameters influencing in electro chemical machining on AA6061 MMC

Mariapushpam¹,

Ravindran²,

Anand³

2016

Mater. Tehnol.

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In this study the mechanical and microstructural behaviours of AA6061 reinforced with silicon carbide (SiC) and AA6061 reinforced with boron carbide (B4C), obtained from the enhanced stir-casting process, were investigated using scanning electron microscopy (SEM) and X-ray diffraction (XRD) with various weight percentages, i.e., 2.5 %, 5 % and 7.5 %. The testing shows that the tensile and microhardness properties of the AA6061 were improved in both the reinforced aluminium-matrix composites. The influence of the electrochemical machining process parameters like current, voltage, electrolyte concentration, feed rate, gap and flow rate were considered as the input parameters. The output responses are the material removal rate (MRR), the surface roughness (SR) and the radial overcut (ROC). The study shows that the dominant output parameter MRR was directly proportional to the input parameters current, voltage and feed rate. The SR was significantly influenced by the input parameters current, feed rate and gap. The ROC was considerably balanced by the input parameters current and feed rate. Keywords: metal-matrix composites, material removal rate, electrochemical machining, surface roughness, radial overcut V {tudiji so bile preiskovane mehanske lastnosti in mikrostruktura AA6061, izdelanega z naprednim postopkom ulivanja s preme{avanjem in oja~anega z razli~nim masnim dele`em silicijevega karbida (SiC) ali borovega karbida (B4C) (2,5 %, 5 % in 7,5 %). Preiskave so bile izvedene s pomo~jo vrsti~nega elektronskega mikroskopa (SEM) in z rentgensko difrakcijo (XRD). Preizku{anje ka`e, da sta natezna trdnost in mikrotrdota AA6061 narasli pri obeh vrstah kompozita na osnovi aluminija. Za vpliv vhodnih procesnih parametrov pri elektrokemijski strojni obdelavi so bili upo{tevani: tok, napetost, koncentracija elektrolita, hitrost podajanja, re`a in hitrost pretoka. Izhodni odgovori so bili: hitrost odstranjevanja materiala (MRR), hrapavost povr{ine (SR) in pove~anje radiusa (ROC). [tudija ka`e, da je prevladujo~i izhodni parameter MRR neposredno proporcionalen vhodnim parametrom; toku, napetosti in hitrosti podajanja. Na SR so mo~no vplivali vhodni parametri: tok, hitrost podajanja in re`a. ROC je bil posebej uravnote`en z vhodnima parametroma, tokom in hitrostjo podajanja. Klju~ne besede: kompoziti na kovinski osnovi, hitrost odstranjevanja materiala, elektrokemijska strojna obdelava, hrapavost povr{ine, pove~anje radiusa

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Strain hardening behaviour and temperature effect on Al-2124/SiCp

Cited by 27 publications

References 10 publications

An elastoplastic three-dimensional homogenization model for particle reinforced composites

An elastoplastic three-dimensional homogenization model for particle reinforced composites

Lower Cost Automotive Piston from 2124/SiC/25p Metal-Matrix Composite

Machining parameters influencing in electro chemical machining on AA6061 MMC

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