Dear Colleagues. I have been reading the book: "Crystallographic Texture of Materials-Springer-Verlag London (2014)" to get familiar with EBSD data. However, I still cannot find the connection between the use of standard stereograph projection in the analysis of pole figures from EBSD. Do I need to overlap those maps with each other? which pole will it need to match with TD, ND, and RD? (Transversal, Normal and rolling direction). Any guidelines will be welcome.
Best regards
If I understand your question correctly, the user designates their sample reference frame in the EBSD system.
I'm a little bit confused by what you mean by overlap however. Orientation data of individual points / grains are used to separately generate a pole figure. Or are you referring to the use of the inverse pole figure used to show crystallographic orientation in EBSD maps?
Brian Lin thank you for your time and interest in my question. In the picture attached, you can see the POLE FIGURE given by my EBSD data (left) and right an image taken from "Crystallographic Texture of Materials-Springer-Verlag London (2014). I want to do the same analysis as states in the book.
I will respond more later and check if I have a copy of this book available to me. One immediate comment with regards to the overlap: the standard stereographic projection is for a single crystal orientated in the (001). Alternatively, this is effectively the cube orientation. By applying a orientation matrix, we can rotate those poles in the projection. That is what each and every individual EBSD data point/grain is doing.
If you rotate the standard stereographic projection by the Euler angles you have shown, (259.2, 159.5, 255.3), then the 332 pole from the standard stereographic projection will now align with your purple points.
Brian Lin, In other words, I can only overlap if and only if my pole figure (given by the EBSD) and the standard stereographic projection have the same pole. (in this case, 332) right? And after that, I will be able to texture purple points as {hkl} where "hkl" and "uvw" corresponds to the index of stereograhp and RD direction respectively, right?
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