Reinforcement shape effects on the fracture behavior and ductility of particulate-reinforced 6061-Al matrix composites

Song, Shigeng; Shi, Nai; Gray, George T.; Roberts, J. A.

doi:10.1007/bf02595465

Cited by 93 publications

(41 citation statements)

References 22 publications

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“…Although not shown, it also predicts that the maximum triaxial stress occurs between particles in the loading direction. These results correspond very well with predictions for composites having spherical particles by Song et al [34], who used a unit cell finite element models are necessary to understand the material response and improve it. Finite element models of particle-reinforced aluminum in 2D and 3D have been constructed and have lead us to the followi11g conclusIOns.…”

Section: Discussionsupporting

confidence: 87%

3D finite element analysis of particle-reinforced aluminum

Shen

Lissenden

2002

Materials Science and Engineering: A

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Section: Discussionsupporting

confidence: 87%

3D finite element analysis of particle-reinforced aluminum

Shen

Lissenden

2002

Materials Science and Engineering: A

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“…The effect of reinforcement shape on its propensity to fracture has also been investigated but findings reported in the literature are not consistent. Li et al [8] and Vedani et al [32] report small differences in the rate of damage accumulation depending on particle shape, while other studies point to a distinct link between the fracture of a reinforcement and its shape and/or aspect ratio: the higher the angularity and/or the aspect ratio of the reinforcement the more prone it is to cracking [2,3,[36][37][38][39]. Conversely, there is evidence that microstructural damage changes from reinforcement fracture to matrix voiding at or near the matrixreinforcement interface as the reinforcement size, volume fraction, angularity or aspect ratio decrease [10,19,34,36,40,41].…”

Section: Introductionmentioning

confidence: 99%

Influence of damage on the tensile behaviour of pure aluminium reinforced with ≥40 vol. pct alumina particles

et al. 2001

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Abstract-Particle reinforced composites are produced by infiltrating Al 2 O 3 particle beds with high purity Al (99.99%). These materials feature 40-60 vol. pct reinforcement homogeneously distributed in a pore-free matrix. Their tensile behaviour is studied as a function of reinforcement size and shape. Internal damage, in the form of particle fracture and matrix voiding, occurs from the onset of plastic straining. Its evolution with strain is monitored through changes in (i) stiffness and (ii) peak stress after incremental plastic straining and annealing. The influence of damage on the flow curves of the composites can be accounted for using basic postulates of continuum damage mechanics. Failure strains vary between 2 and 4%, and are a function of the rate of damage accumulation. An expression is derived to predict elongation to failure of damaging materials that fail by tensile instability, which gives good agreement with the experimental observations. 

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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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Reinforcement shape effects on the fracture behavior and ductility of particulate-reinforced 6061-Al matrix composites

Cited by 93 publications

References 22 publications

3D finite element analysis of particle-reinforced aluminum

3D finite element analysis of particle-reinforced aluminum

Influence of damage on the tensile behaviour of pure aluminium reinforced with ≥40 vol. pct alumina particles

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

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