SS-ISO-13067 Microbeam analysis - Electron backscatter diffraction - Measurement of average grain size (ISO 13067:2020, IDT)

SS-ISO-13067 - 2021 EDITION - CURRENT
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This document describes procedures for measuring average grain size derived from a two-dimensional polished cross-section using electron backscatter diffraction (EBSD). This requires the measurement of orientation, misorientation and pattern quality factor as a function of position in the crystalline specimen[1]. The measurements in this document are made on two dimensional sections. The reader should note carefully the definitions used (3.3) which draw a distinction between the measured sectional grain sizes, and the mean grain size which can be derived from them that relates to the three dimensional grain size. NOTE 1 While conventional methods for grain size determination using optical microscopy are well-established, EBSD methods offer a number of advantages over these techniques, including increased spatial resolution and quantitative description of the orientation of the grains. NOTE 2 The method also lends itself to the measurement of the grain size of complex materials, for example those with a significant duplex content. NOTE 3 The reader is warned to interpret the results with care when attempting to investigate specimens with high levels of deformation.

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Designation Name

SS-ISO 13067:2021

Revision Level

2021 EDITION

Status

Current

Publication Date

June 14, 2021

Language(s)

English

Page Count

36

International Equivalent

ISO 13067:2020(IDT)