Scanning Three-Dimensional X-ray Diffraction Microscopy with a Spiral Slit

Recently, nondestructive evaluation of the stresses localized in grains was achieved for plastically deformed low-carbon steel using scanning three-dimensional X-ray diffraction (S3DXRD) microscopy with a conical slit. However, applicable metals and alloys were restricted to single phase evaluated stress underestimated due fixed Bragg angles slit optimized αFe. We herein propose S3DXRD rotating spiral adaptable various accurate sweeping angles. Validation experiments 50-keV microbeam conducted as body-centered cubic (BCC) pure Cu face-centered (FCC) phase. As result orientation mapping, polygonal grain shapes clear boundaries observed both BCC FCC metals. Thus, it demonstrated that will be alloys, multiphase higher photon energy within an range determined by focusing optics. In principle, this implies becomes larger thicker metal alloy samples instead current miniature test or wire-shaped if higher-energy is available.