Transformation of M/A Constituents during Tempering and Its Effects on Impact Toughness of Weld Metals for X80 Hot Bends

Figure 9

Inverse pole figures and boundary misorientation maps of the ferrite phase and phase distribution maps obtained from EBSD measurement of Bend C after tempering at different temperatures: (a)–(c) 550°C; (d)–(f) 620°C; (g)–(i) 680°C.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)