Structure and phase stability in a cast modified-HP austenite after long-term ageing

Phase transformations in a cast HP series alloy after long-term ageing were determined by analytical electron microscopy (AEM). Beyond the chromium and niobium carbides normally expected for the as-cast material, an eta phase enriched in Nb and Si is present, indicating phase instability at high tem...

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Bibliographic Details
Published inScripta materialia Vol. 49; no. 2; pp. 117 - 122
Main Authors Kenik, E.A., Maziasz, P.J., Swindeman, R.W., Cervenka, J., May, D.
Format Journal Article
LanguageEnglish
Published New York, NY Elsevier Ltd 01.07.2003
Elsevier Science
Subjects
Analytical electron microscopy
Applied sciences
Austenite
Carbides
Constant-composition solid-solid phase transformations: polymorphic, massive, and order-disorder
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
High temperature
Materials science
Metals. Metallurgy
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Phase transformations
Physics
Analytical electron microscopy
High temperature
Phase transformations
Carbides
Austenite
Nickel alloys
Electron diffraction
Thermal ageing
Iron alloys
X-ray spectroscopy
Chromium alloys
Experimental study
Niobium carbides
Heat treatments
Silicon alloys
Transmission electron microscopy
Phase stability
Microstructure
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Summary:Phase transformations in a cast HP series alloy after long-term ageing were determined by analytical electron microscopy (AEM). Beyond the chromium and niobium carbides normally expected for the as-cast material, an eta phase enriched in Nb and Si is present, indicating phase instability at high temperatures (∼1000 °C).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(03)00238-0