Abstract
Knowledge of multi-scale particle macro-shape and micro-surface topology is critical in many technical disciplines. Specifically, quality assessment of the shape of the graphite phase in cast irons is essential for day-to-day metal casting operations. Common methods for evaluating particle macro-shape have several drawbacks, often resulting in underestimation of sharp corners and surface texture. In this article, a method based on plotting n-radii from the center of mass to the perimeter and computing multi-scale topological characteristics is described and tested. Parametric tests, involving variations in the number of n-radii and image resolution, were performed to optimize the test parameters. The method was used to quantify different shapes of the graphite phase observed in industrial cast irons. A unified parameter of particle shape quality was proposed for the multi-scale characterization of particle shape, angularity and texture. The n-radii approach could be used in standards for the comprehensive evaluation of graphite shape nodularity, as well as for the characterization of various particulates.
Recommended Citation
S. N. Lekakh and L. Bartlett, "N-radii Approach For Multi-scale Characterization Of Graphite Shape In Cast Iron," International Journal of Metalcasting, Springer, Jan 2026.
The definitive version is available at https://doi.org/10.1007/s40962-026-02091-2
Department(s)
Materials Science and Engineering
Publication Status
Open Access
Keywords and Phrases
angularity; graphite; n-radii method; particle surface topology; shape
International Standard Serial Number (ISSN)
2163-3193; 1939-5981
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2026 Springer, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Jan 2026
