How to calculate the misorientations between two EBSD subsets and draw the misorientation axes on IPF

[Jie]

Hi, Ralf. I am trying to analyze in my paper the orientation relationship between the deformed matrix and nuclei. I have already successfully obtained the axis/angle pairs of the misorientation between each nulei and the deformed matrix. I am using METX 3.3.2 and matlab R2010a. I wonder if METX can help me draw the misorientation (between two EBSD subsets) axes distribution on the (0001, 11-20, 10-10) triangle.

Attatched is axis/angle pair data.

Thanks for your valuable time!

Best wishes.

[Arthur Aebersold]

Hi Jie,

I'm not an expert in using MTEX, but here is how I'd do it:

So first I import the text file and obtain the four variables alpha,axis1,axis2,axis3 each <99x1 double>.

Then i calculate the quaternions for each misorientation:

q=axis2quat(axis1,axis2,axis3,angle*degree)

from these I define my misorientations by:

miso=orientation('quaternion',q,cs,cs)

,where cs is the crystal symmetry of the nuclei and matrix, assuming they both have the same symmetry

Then you can get the misorientation distribution function with:

mdf=calcODF(miso)

And then in order to draw the axis distribution over all disorientation angles you can use

plotAxisDistribution(mdf)

Hope this is helpful,

Regards

Brian

[Arthur Aebersold]

Hi,

I just thought about my answer and you probably want to plot the disorientation axes individually rather than passing by an mdf since there aren't too many misorientations given:

plot(axis(miso),'all','FundamentalRegion')

regards

Brian