Dear All:
I have the following question. Which is a proper definition of the crystallite size measured by XRD (line-broadening methods) in metals and alloys deformed plastically where there are abundant faults, twins and dislocations? In other words, from the XRD viewpoint, the boundaries of the crystallites are what (twin boundary, high density dislocation wall, and what)? May I ask for a list of your understanding of the boundaries for XRD crystallites?. I guess that most of you will say that the size provided by X-ray diffraction corresponds to the average of the regions in the material diffraction coherently. But, such domains are undistorted, distorted or what?. Can such domain contains dislocations in their interior, or point defects, or what? Thanks in advanced Angel
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