A comparison of the solidification behavior of Incoloy 909 and Inconel 718

Journal Article · Wed Jan 31 23:00:00 EST 1990 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (USA)

DOI:https://doi.org/10.1007/BF02782428· OSTI ID:7075489

Cieslak, M J; Knorovsky, G A ^[1]; Headley, T J ^[2]; Romig, A D ^[3]; Kollie, T ^[4]

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1. Process Metallurgy Div., Sandia National Lab., Albuquerque, NM (US)
2. Electron Optics Div., Sandia National Lab., Albuquerque, NM (US)
3. Physical Metallurgy Div., Sandia National Lab., Albuquerque, NM (US)
4. Oak Ridge National Lab., TN (USA)

The solidification behavior of two commercial aerospace superalloys, Incoloy 909 and Inconel 718, has been examined. Differential thermal analysis (DTA) revealed that Incoloy 909 terminates solidification with the formation of a single minor constituent at {approx} 1198{degrees}C. Inconel 718 terminates solidification with the formation of two minor constituents at {approx} 1257{degrees}C and {approx} 1185{degrees}C, respectively. Metallography confirmed that a single minor constituent was present in Incoloy 909 while two minor constituents were present in Inconel 718. Samples were also examined by electron probe microanalysis to reveal the patterns of elemental segregation.

• OSTI ID: 7075489
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (USA), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (USA) Vol. 21:2; ISSN MTTAB; ISSN 0360-2133
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
AUSTENITIC STEELS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
DIFFERENTIAL THERMAL ANALYSIS
ELECTRON MICROSCOPY
ELECTRON PROBES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INCONEL 718
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
LAVES PHASES
MATERIALS
METALLOGRAPHY
MICROSCOPY
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM A
NIOBIUM ALLOYS
PHASE TRANSFORMATIONS
PROBES
SOLIDIFICATION
STEELS
THERMAL ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY