Use marching phase to find a BCC region from its composition, and keep it beside a phase you already saved.

- Open a reconstruction that already has a range file. In this example a saved MnNi Phase is already shown in orange.
- Click Marching phase. The panel opens with voxel 1.00 nm and delocalization 3.00 nm.
- Under Saved phases, select the new phase and name it BCC CrFe. Leave MnNi Phase checked so it stays on screen.
- Check Co, Cr, Fe, and Mn. Enter the composition and the range around it. Here that is Co 4.00 at.% ± 3.00, Cr 85.00 at.% ± 5.00, Fe 8.00 at.% ± 4.00, and Mn 4.00 at.% ± 3.00.
- Click Apply. The blue surface is every voxel that sits inside all four composition windows at once.
- The panel reports the triangle count, the phase volume, its fraction of the reconstruction, the closed regions, and the number density.
- Keep Show phase and Clip outside reconstruction on. Both phases stay visible together.
- Click Rotate anim. to turn the reconstruction and compare the BCC CrFe phase with the MnNi phase.
Save keeps the phase in the project. New adds another one.
DASAPT
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