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Figure 8
(a) The measured distribution of (110) edge position λ within the b.c.c. steel of the Al–steel weld. The map is obtained by fitting an analytical function into the measured spectrum within the ∼1 × 1 mm area around each pixel of the image. The legend shows the colour bar for the Bragg edge wavelengths. (b) Cross section (0.5 mm wide) through the edge position map shown by a dashed line in (a). The legend indicates the laser power used in welding of each sample. The lattice parameter is calculated as λ/2 according to Bragg's law. (c) Residual strain distribution calculated from (a) with the assumption of unstrained lattice value 4.0676 Å. (d) Same as (b), calculated for the strain.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 49| Part 4| August 2016| Pages 1130-1140
doi:10.1107/S1600576716006725
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