THE EFFECT OF PARTICLE SIZE ON THE STRESS AND STRAIN FIELDS IN A PLASTICALLY DEFORMED MATRIX | ||
| International Conference on Aerospace Sciences and Aviation Technology | ||
| Article 14, Volume 7, ASAT Conf. 13-15 May 1997, May 1997, Pages 181-202 PDF (4.06 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/asat.1997.25400 | ||
| Author | ||
| N. M. MAWSOUF | ||
| Associate Professor, Dpt. of Mech. Design & Prod., Faculty of Engineering, Cairo University, Guiza, Egypt. | ||
| Abstract | ||
| 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. | ||
| Keywords | ||
| Metal Matrix Composites; crack; particles; fracture; Stress Concentration; Strain Criterion; nucleation | ||
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