Study of the tensile fracture mechanism and prediction of the fracture criterion in aluminium alloys

Mawsouf, N.M.

doi:10.1007/bf00819936

Cited by 1 publication

(2 citation statements)

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Section: Introductionmentioning

confidence: 99%

“…Non uniformity of deformation of two-phase material was reported by many investigators using fractographic and metallographic techniques [1][2][3][4][5][6][7][8][9][10][11]. Different stages of deformation, crack initiation, crackgrowth, crack propagation were examined [1][2][3][4][5]. The effect of particle properties: size [5][6][7][8][9][10][11][12], volume fraction [11][12], shape [12,13], and interparticle spacing [5,9], on the deformation process was studied.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Particle Size on the Stress and Strain Fields in a Plastically Deformed Matrix

Mawsouf

1997

International Conference on Aerospace Sciences and Aviation Tec

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Finite Element analyses of the effect of particle size on the stress and strain fields in an Al-22 wt pct Si alloy (d=100um) are performed. The alloy was ,modified by a nucleant to obtain a more refined structure with smaller particle size (d=251.im). The general interaction between the inhomogeneity and matrix is characterized by: firstly, a hard inclusion creates a high perturbation of triaxial stress at the poles along the line of loading; secondly a hard inhomogeneity carries higher stress than the matrix; the stress level in the particle is determined by the misfit of the two phases; thirdly all the perturbation fields are scaled by inclusion size; finally a correlation has been made between the stress concentration in the matrix and the size of the in homageneity.

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