BS ISO 13067:2011

1   Scope This International Standard 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] .

   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.