PSI - Issue 43

Mattias Calmunger et al. / Procedia Structural Integrity 43 (2023) 130–135 Mattias Calmunger et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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5

a)

b)

12 µ m

25 µ m

c)

d)

20 µ m

15 µ m

Figure 3: BSE-SEM images of Sanicro 25 after IP- TMF at 0.6% strain range a) virgin and b) aged 2000 h at 800 °C, and after OP -TMF at 1.2% strain range c) virgin and d) aged 3000 h at 650 °C. In Fig. 4 the microstructure of TMF tested Esshete 1250 are shown. According to Wärner (2019) and Wärner (2022) the bright precipitates in virgin and pre-aged Esshete 1250 after TMF testing were identified as NbC by using energy dispersive spectroscopy in an SEM. a) b)

20 µ m

20 µ m

c)

d)

12 µ m

12 µ m

Figure 4: BSE-SEM images of Esshete 1250 after IP-TMF at 0.6% and 0.3% strain range respectively a) virgin and b) aged 2000 h at 800 °C, and after OP- TMF at 1.2% strain range c) virgin and d) aged 3000 h at 650 °C.