Systematic error of the spherical grain model in converting grain size distributions and its correction with the new models
X. B. Zhao,
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P.R. China
K. Lücke,
Institut für Metallkunde und Metallphysik, RWTH Aachen, Kopernikusstr. 14, D-52056 Aachen, FRG
Abstract
Three-dimensional (3D) grain sizes were generally obtained by converting the 2D or 1D grainsizes to 3D with the methods based on spherical grain model (S-model). In this paper, the systematic error and its origin involving the conversion of grain sizes caused by the S-model is analyzed in the 2-D case, and a new polyhedral grain model (P-model) is developed to calculate 3D and 2D grain sizes from the 2D and/or 1D data. Experimental analyses show that the systematic error originated from the spherical model can be well corrected by using the new polyhedral model.
Keywords : geometric model, grain size, systematic error
Pour citer cet article
X. B. Zhao & K. Lücke, «Systematic error of the spherical grain model in converting grain size distributions and its correction with the new models», Acta Stereologica [En ligne], Volume 17 (1998), Number 1 - June 1998, 123-139 URL : https://popups.uliege.be/0351-580x/index.php?id=2553.