Fig. 4

Synchrotron X-ray diffraction analysis in the welding joint: (a) Diffraction heat map around a welding joint, (b) Integrated diffraction profiles of BM, and FZ, (c) FWHM evolution of four selected Mg peaks, insert is the Williamson-Hall (WH) plots for Mg peaks at BM, and FZ, and (d) Dislocation densities determined by the convolutional multiple whole profile (CMWP) method.