KAM (kernel average misorientation) calculation

[Peyman Ahmadian]

Dear All 

I want to plot EBSD map by Mtex-4.2.1 version. *.crc file of scanned Ti64 alloy (alpha + beta phase) is available which is supportable with Mtex import wizrad. after importing data, generated m-script file has been saved finally i used plot (ebsd) command for plotting EBSD map. CS, ebsd, fname and pname have been calculated automatically however, nothing has been revealed in figure (attached file). 
i would appreciate you if you explain me where is my mistake and how can i plot EBSD map?

regards

[ruediger Kilian]

Dear Peyman,
what exactly do you want to do? The kam is calculated with the function KAM. Did you have a look at the documentation (https://mtex-toolbox.github.io/documentation.html) to get a general idea of working with ebsd data, plotting etc in mtex?

Cheers,
Rüdiger

> --
> If you want to reduce the number of emails you get through this forum login to https://groups.google.com/forum/?fromgroups=#!forum/mtexmail, click "My membership" and select "Don't send me email updates". You can still get emails on selected topics by staring them.
> ---
> You received this message because you are subscribed to the Google Groups "MTEX" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to mtexmail+u...@googlegroups.com.
> Visit this group at https://groups.google.com/group/mtexmail.
> For more options, visit https://groups.google.com/d/optout.
> <untitled.jpg>

[Peyman Ahmadian]

Dear Kilian 

I am going to clarify my question. it is possible to calculate KAM with Mtex. my main question is about calculation KAM for different orientation. for example i want to calculate KAM for [0001], [10-10] and [11-20] orientation separately. it is possible to do this by TSL OIM software. 

Is it possible to calculate KAM for grains with different orientation?

[Rüdiger Kilian]

Hi Peyman,
yes, you can calculate a kam using the function KAM. I'm not entirely sure what you mean with "for different orientations" since [0001] etc are crystal directions, however assuming you have an orientation as a reference, you can select the ebsd of the grains which have a meanOrientation within a certain threshold, e.g. 10degrees to this reference orientation and calculate the kam for this subset.
Assuming your reference orientation would be o and grains would be of a single phase,conceptually this would be:
kam = KAM(ebsd(grains(angle(o,grains.meanOrientation) < 10*degree)))
Of course you could similarly select a subset of grains e.g. with just a crystal direction pointing towards some specimen direction, e.g. 0001 close to parallel to z would be:
kam = KAM(ebsd(grains(angle(zvector, grains.meanOrientation.*Miller(0,0,0,1,cs)) < 10*degree)))
I hope this helps,
Cheers, Rüdiger

---

From: mtex...@googlegroups.com [mtex...@googlegroups.com] on behalf of Peyman Ahmadian [pahma...@gmail.com]
Sent: Saturday, April 15, 2017 9:31 AM
To: MTEX
Subject: {MTEX} Re: KAM (kernel average misorientation) calculation

--