Snímky sú zo SEM. Ilustrujú morfológiu fáz gama a gama' v superzliatine CMSX-4 po vystavení dlhodobému stárnutiu (1000°C, 2000h). Snímané plochy vzorky sú v rovine (001). (a), (b) Rozdiel medzi dendritickým (D) a medzidendritickým (I) priestorom, (c) Mikroštruktúra v dendrite + TCP fázy, (d) Kuboidálne gama' precipitáty v I, (e) Raftovaná štruktúra v I, (f) Raftovaná štruktúra v D, (h) Detailný snímok gama raftov v D, (i) gama raftov v I.

SEM micrographs showing the morphology of γ and γ’ phases in CMSX-4 superalloy after long-term ageing. Scanned planes are (001). (a), (b) Difference between dendrite (D) and interdendritic region (I), (c) Microstructure within the dendrite with TCP phases, (d) Cuboidal γ’ precipitates within I, (e) Rafted structure within I, (f) Rafted structure within D, (g) Detail of the γ’ rafts within D, (h) Detail of the γ rafts within D, (i) γ rafts within I.

Zdroj / Source:
[1] Gebura, M. – Lapin, J.: Morphological changes of gama prime phase in Ni-based superalloy during long-term ageing, at 17th international conference on Metallurgy and Materials METAL 2008, Hradec nad Moravici;