Kindly let me know if anyone knows how to calculate the Taylor factors of grains from IFP coloring obtained with EBSD test. I thank if anyone informs me of any software or method in this case.
Thanks for your help in advance.
Thank you for your reply; I looked at the web page introduced by you. Kindly let me know if I have to follow the instruction entitled " the orientation dependence of the Taylor factor" or not.
In fact, we’ve got the IPF coloring of material at different position and we have a table which consists of position and IPF coloring. Now we would like to calculate the Taylor factor of each location on the basis of pertaining IPF coloring. Please let me know if still I have to stick to this instruction or not.
Thanks for your help in advance. I am looking forward to hearing from you.
Could be missing something but anyway...
IPF Coloring is not a unique orientation so you will have to make approximations about the additional orientations.
One way to do this is in MTEX is... create a random set of orientations, then calculate Taylor factor for these. You can then give each orientation an IPF color and a TF value. Something like plotting an IPF map with TF as the color would also be possible.
If you want to use MTEX I'd recommend you try the MTEX google user group. You can search previous questions to see if any match yours, and if not ask a question of your own.
To David:
Thank you for your reply, now I tried to use the following function:
https://mtex-toolbox.github.io/files/doc/orientation.calcInvTaylor.html
but I am clueless on using it. I highly appreciate if you let me know how to use it. For instance, please let me know where I can get the “tensor” function.
One more thing; it seems that the inputs are misorientation (mori) and slip systems (sS). But I only have IPF coloring. Kindly let me know how I can insert IPF coloring as input.
Thanks for your help in advance. I am looking forward to hearing from you.
To Thomas,
Thank you for your reply, I will consider your point of view, but could you please let me know how I can make approximation and create orientation from IPF coloring.
Hi Mehdi, what software are you using to obtain and analyze your EBSD data?
Didn't save all my answer for some reason.
Like I said try https://groups.google.com/forum/?fromgroups=#!forum/mtexmail
for more on MTEX.
On Taylor function. You need to give input of the crystal structure, the slip systems, and deformation tensor (i.e. which way you are pulling the sample), orientations. Without these any results don't make sense. Fairly easy to do though if you follow the documentation
Dear All,
Thank you very much for your useful information.
Regards,
Mehdi
To David:
I could run the commands and I got the "M" taylor factors. When I type M in matlab, I get the M values, but I have no idea that these M values belong to what grains, is there any possibility to see a map that shows the grains with marked M values?
Thanks for your help in advance.
Regards,
Mehdi
so, how I can understand that a M value belongs to what grain exactly? can I make a map containing grain showing the specific M value?
Hi,
Thank you for your help, I could get the M Taylor factor and calculate the grains, however, the grains plot is not similar to the EBSD image, it looks different from the texture shown in EBSD image, I thank if you help me in this regard. I am wondering that I have a mistake in my coding, could you please give me the most appropriate scripts. Thanks for your help in advance.
Regards,
Mehdi
Regarding my last post, I am using the following codes:
grains = calcGrains(ebsd,'angle',10*degree)
% some strain
q = 0;
epsilon = tensor(diag([1 -q -(1-q)]),'name','strain')
CS = crystalSymmetry('cubic');
sS = symmetrise(slipSystem.fcc(grains.CS));
[M,b,mori] = calcTaylor(inv(grains.meanOrientation)*epsilon,sS);
plot(grains,M)
mtexColorMap white2black
mtexColorbar
coords=grains.centroid;
x=coords(:,1);
y=coords(:,2);
plot(grains,M)
str=num2str(round(M,0));
text(x,y,str)
Thanks for your help in advance.
Regards,
Mehdi
Hi, can anyone direct me to the way of plotting Taylor factor contour on the existing IPF sector?
Here they have done it for schmid factor.
https://groups.google.com/g/mtexmail/c/OXG-sjFRyRU
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