Microstructural Study on Oxygen Permeated Arc Beads

Figure 4

Analysis of the dendrite tipped with precipitate. (a) Microstructure of the dendrite tipped with precipitate observed by FIB-SEM and the sampling of TEM specimen, (b) schematic diagram of dendritic growth, (c) EDS spectrum of the dendrite, (d) TEM bright field of the dendrite, (e) dark field of the dendrite, (f) corresponding diffraction pattern of the matrix along direction, (g) EDS spectrum of the precipitate phase, (h) TEM bright field of the precipitate phase, (i) dark field of the precipitate phase, and (j) corresponding diffraction pattern of the Cu₂O phase along direction.