Generating a Synthetic 3D Microstructure from a Single EBSD Scan (.ctf format)

[Muthanna Kareem]

Hello DREAM.3D Community,,

I’m working on reconstructing a synthetic 3D microstructure based on a single EBSD scan (in .ctf format). My goal is to use the scanned top surface as a reference and then generate a synthetic 3D grain structure beneath it — either by extrusion or by using statistical information extracted from the scan.
Has anyone done something similar in DREAM.3D? Specifically:
Is it feasible to directly extrude the grains downward based on the 2D scan TO get a 3D syntactic grain structure?
Alternatively, how can I extract grain size and orientation statistics from the scan and use them to generate a statistically equivalent synthetic 3D microstructure using DREAM.3D?

Are there any example pipelines or best practices you’d recommend for either approach?

Any guidance, tips, or sample pipelines would be greatly appreciated!

Thanks in advance,
Muthanna Kareem

[stopk...@gmail.com]

Hi Muthanna, there are several options here:

1) You can certainly "extrude" your 2D EBSD scan into a 3D model where each grain in the 2D scan will be a "columnar" grain in the direction of extrusion. This will give you a model as shown in this graphical abstract labeled "Columnar" at https://doi.org/10.1016/j.jmps.2024.106023

2) Alternatively, you can process the EBSD scan, extract grain size statistics, and then use an older version of DREAM.3D (version 6) to generate a synthetic microstructure. The older DREAM.3D versions have prebuilt pipelines that will do what you need, you just need to edit the "Stats Generator" filter with the desired microstructure statistics in terms of grain size and shape, texture/grain orientations, etc.

Please search this group for key words such as "EBSD statistics", "2D to 3D reconstructions", etc., as these types of questions are often asked on here and have been answered.

Best regards,

Kris

[Jack]

Hi Kareem, i think that either you work with thermodinamic models or, if you want to rely on stereology i quite confidently say that the spherical model for the grain shapes doesn't give very satisfying results. I am going to present something about it at the RMS conference on Wednesday

Cheers

Jacopo

--
You received this message because you are subscribed to the Google Groups "dream3d-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to dream3d-user...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/dream3d-users/4a5a9032-3206-45bc-bde3-b1d12129bfc1n%40googlegroups.com.