Dynamic mechanical response and thermal expansion of ceramic particle reinforced aluminium 6061 matrix composites

Vaidya, R. U.; Song, Shigeng; Zurek, A.K.

doi:10.1080/01418619408242933

Cited by 29 publications

(15 citation statements)

References 18 publications

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“…Stephens and co-workers [13] also report a weak interface due to reaction in a B 4 C reinforced Al Á/7Si alloy produced by stir-casting; the interface was found to be responsible for the poor mechanical performance of those composites. Vaidya et al [14] on the other hand, provide evidence that in spray-cast 15 vol.% B 4 C reinforced 6061 aluminum alloy, the reinforcement significantly enhances the mechanical properties of the matrix both in quasi-static and dynamic testing. The composites are found to be reaction-free and the interface is reported to be very strong due to good wetting of the B 4 C particles.…”

Section: Introductionmentioning

confidence: 99%

Effect of reaction on the tensile behavior of infiltrated boron carbide–aluminum composites

Kouzeli

Marchi

Mortensen

2002

Materials Science and Engineering: A

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Gas pressure assisted liquid metal infiltration was employed in the fabrication of various high volume fraction B 4 C Á/Al composites. Two reaction products were observed and identified in the composites, namely AlB 2 and Al 3 BC. An increase in total volume fraction of these phases results in an increase in flow stress of the composites, concomitant to a decrease in ductility. The latter was shown to be related to an accelerated accumulation of damage, which we quantified by monitoring the stiffness of the composites as a function of strain. A simple relationship is used to quantitatively link internal damage accumulation and tensile ductility in the present composites. #

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Section: Introductionmentioning

confidence: 99%

Effect of reaction on the tensile behavior of infiltrated boron carbide–aluminum composites

Kouzeli

Marchi

Mortensen

2002

Materials Science and Engineering: A

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“…Experimental studies have determined that the predominant damage micromechanisms leading to this degradation are: (i) reinforcement fracture, (ii) void nucleation and growth in the matrix and (iii) debonding along the matrix/reinforcement interface [1][2][3][4][5][6][7][8][9][10][11][12]. With respect to the influence of basic microstructural parameters on the rate of damage accumulation, it has been shown that increasing reinforcement size, angularity, aspect ratio, volume fraction, inhomogeneity in spatial distribution, interface degradation and matrix strength increases the level of damage in particle reinforced MMCs [13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Quantification of microdamage phenomena during tensile straining of high volume fraction particle reinforced aluminium

et al. 2001

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Abstract-Particle reinforced composites are produced by infiltrating ceramic particle beds with 99.99% Al. Resulting materials feature a relatively high volume fraction (40-55 vol. pct) of homogeneously distributed reinforcement. The evolution of damage during tensile straining of these composites is monitored using two indirect methods; namely by tracking changes in density and in Young's modulus. Identification and quantification of the active damage mechanisms is conducted on polished sections of failed tensile specimens; particle fracture and void formation in the matrix are the predominant damage micromechanisms in these materials. The damage parameter derived from the change in density at a given strain is found to be one to two orders of magnitude smaller than the parameter based on changes in Young's modulus. A simple micromechanical analysis inspired by the observed damage micromechanisms is used to correlate the two indirect measurements of damage. The predictions of this analysis are in good agreement with experiment.

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“…Failure by interface debonding has been observed by Vaidya et al [5,6] in a composite prepared by spray forming. No debonding was observed in the present work, which suggests that the composite prepared by the powder metallurgy technique used here has a strong SiC±aluminium alloy interfacial strength.…”

Section: Fracture Surfacementioning

confidence: 94%

“…This problem has been addressed by reinforcing the alloys with SiC particles or whiskers. Whilst there has been extensive study on the behaviour of SiC particles reinforced Al alloys upon quasi-static deformation [1±4], there are relatively few reports available on their dynamic response at high strain rates (>10 3 s À1 ) [5,6]. In order to use the composites more safely and ef®ciently, a more thorough understanding of their dynamic behaviour is clearly needed.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical behaviour of a SiC particles reinforced Al–5Cu composite under dynamic loading

Lu¹,

Meng²,

Lee³

et al. 1999

Journal of Materials Processing Technology

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The mechanical behaviour of a composite of Al±5Cu matrix reinforced with 15% SiC particles was studied at different strain rates from 1Â10 À3 to 2.5Â10 3 s À1 using both a conventional universal testing machine (for low strain-rate tests) and a split Hopkinson bar (for tests at dynamic strain rates). Whilst the yield stress of the composite increases as the strain rate increases, the maximum¯ow stresses, 440 MPa for compression and 450 MPa for tension, are independent of strain rate. The microstructures and defect structures of the deformed composite were studied with both scanning electron microscopy and transmission electron microscopy and were correlated to the observed mechanical behaviour. Fracture surface studies of samples after dynamic tensile testing indicates that failure of the composite is controlled by ductile failure of the aluminium matrix by the nucleation, growth and coalescence of voids. # 1999 Elsevier Science S.A. All rights reserved.

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Dynamic mechanical response and thermal expansion of ceramic particle reinforced aluminium 6061 matrix composites

Cited by 29 publications

References 18 publications

Effect of reaction on the tensile behavior of infiltrated boron carbide–aluminum composites

Effect of reaction on the tensile behavior of infiltrated boron carbide–aluminum composites

Quantification of microdamage phenomena during tensile straining of high volume fraction particle reinforced aluminium

Microstructure and mechanical behaviour of a SiC particles reinforced Al–5Cu composite under dynamic loading

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