Microstructure and phase stability in INCONEL alloy 740 during creep

Phase transformations in a creep-rupture tested specimen of nickel-base superalloy 740 were characterized by electron microscopy. During creep at 816 °C, specimens developed chromium carbides and a complex silicide, the fcc G-phase, along grain boundaries, and an hcp eta phase, having a Widmanstätte...

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Veröffentlicht in:	Scripta materialia 2004-09, Vol.51 (6), p.503-507
Hauptverfasser:	Evans, N.D., Maziasz, P.J., Swindeman, R.W., Smith, G.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical electron microscopy Applied sciences Creep Electron diffraction Exact sciences and technology Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Nickel alloys Phase transformations
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Beschreibung
Zusammenfassung:	Phase transformations in a creep-rupture tested specimen of nickel-base superalloy 740 were characterized by electron microscopy. During creep at 816 °C, specimens developed chromium carbides and a complex silicide, the fcc G-phase, along grain boundaries, and an hcp eta phase, having a Widmanstätten pattern of laths, across grains and grain boundaries.
ISSN:	1359-6462 1872-8456
DOI:	10.1016/j.scriptamat.2004.05.047