鋳鉄内黒鉛の断面形状不規則性に関する定量的解析法

概要

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Shape of graphite particles in cast iron varies widely depending on the casting and heat treatment conditions. Mechanical properties of cast iron are strongly affected by the matrix microstructure and geometrical characteristics of the graphite particles such as size and shape. In this study, quantitative analysis of the sectional shape irregularity of such graphite particles within cast iron was carried out by applying a fractal concept. Fractal dimension thus obtained was not sufficient to represent macroscopic shape irregularity, although microscopic irregularity was success-fully evaluated. In order to evaluate macroscopic irregularity, the "Macroscopic Shape Index" was proposed here by combining Kaye's procedure with the Fast-Fourier-Transformation technique. This index was found to be useful in quantitative evaluation of the macroscopic irregularity.
一般社団法人日本機械学会の論文
1995-10-25