PSI - Issue 14

Premkumar Manda et al. / Procedia Structural Integrity 14 (2019) 467–474 Author name / Structural Integrity Procedia 00 (2018) 000–000

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Fig. 5. EBSD microstructure (IPZ map) of the damaged cooling duct.

The BSE image of the EPMA shows the presence of several black and elongated particles. These particles are varying in size and shape (Fig. 6 (a and c)). The EPMA line scan taken from black particles displays the presence of Mn, Fe, Si and Al (not shown in the line scan being the base element) as shown in Fig. 6 (b and d).

Fig. 6. EPMA analysis: (a) BSE; (b) corresponding line scan taken from black particle marked by double arrow; (c) BSE; (d) corresponding line scan taken from black particle marked by double arrow.