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Cellular AlMg-SiC composites structure modeling by means of fractal analysis

O. BĂLŢĂTESCU1,* , R. M. FLOREA1, I. CARCEA1, I. RUSU1

Affiliation

  1. Technical University “Gheorghe Asachi” of Iasi-Romania, Department of Materials Science and Engineering, Blvd. Mangeron, No. 59A, 700050, Iasi, Romania

Abstract

This paper aims to describe, based on fractal analysis, the configurations and geometrical characteristics of composite cellular structures (size, shape and distribution of the cells). The samples from AlMg10-SiC (with 5, 10 and 15% SiC) were obtained by means of gas injection method. We used fractal geometry modeling by means of fractal dimension types of composites obtained from performed experiments. We obtained the following fractal dimensions for the sample with 5% SiC the fractal dimension is 1.904, for 10% SiC – 1.939 and for 15% SiC –1.951. Fractal analysis results indicate that composite cells obtained from experiments have a statistically regular form. It seems that in the composite volume it is a tendency to obtain non-spherical open cells and bridges between adjacent cells. This fact is proved by microscopic analysis. We can conclude by correlating the determined fractal dimension with the pore size that the 15% SiC alloy has the smallest cell dimensions and the biggest relative porosity and, consequently, the highest complexity and mechanical properties..

Keywords

Fractal analysis, Cellular structure, Composite, Porosity.

Submitted at: April 4, 2015
Accepted at: Oct. 28, 2015

Citation

O. BĂLŢĂTESCU, R. M. FLOREA, I. CARCEA, I. RUSU, Cellular AlMg-SiC composites structure modeling by means of fractal analysis, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 11-12, pp. 1862-1867 (2015)