Figure 2. Low-magnification overviews of transversal cross-section welds of hot rolled UFG sheet (a) and cold rolled UFG sheet (b). AS and RS denote advancing and retreating sides, respectively. White arrow indicates “kissing bond” defect.

Figure 2. Low-magnification overviews of transversal cross-section welds of hot rolled UFG sheet (a)
and cold rolled UFG sheet (b). AS and RS denote advancing and retreating sides, respectively. White arrow
indicates “kissing bond” defect.