Fig. 6 EBSD misorientation color maps (a, c, e) and corresponding recrystallization results (b, d, f): (a, b) BM, (c, d) AS-HAZ, (e, f) WNZ
According to statistical information estimated by EBSD, the average grain size (d*) and misorientation angle were further accurately measured and displayed in Fig. 7. As can be seen that the d* of BM, AS-HAZ were very close, with the values of 14 μm and 16 μm, while the d* of WNZ was about 4 μm (Fig. 7a). In addition, both BM and AS-HAZ processed high fraction of LAGBs structure, whereas, WNZ mainly consisted of HAGBs recrystallized structure (Fig. 7b).