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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.


Общая информация 

  • Текущий статус
     : Опубликовано
    Дата публикации
     : 2020-07
  • Версия
     : 2
  • Технический комитет
     : ISO/TC 202 Microbeam analysis
  • ICS
     :
    71.040.50 Physicochemical methods of analysis

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  2. Интернет-магазин
  3. Каталог стандартов
  4. ТК
  5. ISO/TC 202
  6. ISO 13067:2020