The 6-step guide
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1) Sample mounting
Mount sample material in a Zeiss Xradia CrystalCT or a ZEISS Xradia 520/620 Versa X-ray Microscope equipped with a LabDCT Pro™ module.
Align the sample and choose aperture and beam stop to match the region of interest.
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2) Data collection
Acquire two data sets:
- Absorption contrast for sample outline, voids and precipitates
- Diffraction contrast for grain map reconstruction
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3) Processing
Load the acquired data into Xnovo’s GrainMapper3D software and enter basic information about the material. Follow the step-by-step guide in the Graphical User Interface to
- Select region of interest
- Separate signals from background
- Choose optimal reconstruction parameters
- Launch the 3D reconstruction
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4) Reconstruction
As the reconstruction algorithm finds an indexing solution, a grain is added to the preview. The reconstruction process is converged once a space-filling 3D map is obtained.
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5) Results
Visualize the grain structure of the material in 3D. Colour coding can be chosen according to e.g. orientation, grain size, or completeness.
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6) 4D evolution studies
Expose the sample to external stimuli such as heat or mechanical loading and repeat above steps to study the evolution of the microstructure.