Relationship between mean grain face curvature and number of faces in normal grain growth: The meaning of normalized integral mean curvature

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چکیده

This paper describes the physical meaning of MS norm (=MS/V1/3), unitless grain size normalized integral mean curvature faces, as a descriptor effect face number on shape, affecting boundary velocity in driven growth. has consistently been found to have linear relationship with class, f, among diverse experiments real materials and simulations. Analysis terms effects faces its components, average H¯ surface area S, show that combined, they reduce term is function only shape. Values H¯, approximated / V2/3 are shown for first time f scale. Plots versus positive values at low classes, decreasing rapidly towards zero f?15, becoming increasingly negative rate increasing f. Plotted scale, V1/3, value each class decreases magnitude increased scale during Ms vs. continuous decrease H¯. Independent plots individual classes were be through origin, slopes equal norm.

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ژورنال

عنوان ژورنال: Acta Materialia

سال: 2022

ISSN: ['1873-2453', '1359-6454']

DOI: https://doi.org/10.1016/j.actamat.2022.117724