On incipient melting during high temperature heat treatment of cast Inconel 738 superalloy

On incipient melting during high temperature heat treatment of cast Inconel 738 superalloy

The aim of the present work was to investigate the cause and nature of the limiting incipient melting, which should aid development of appropriate higher solution heat treatment schedule. This was performed by examining the microstructure of as-cast IN 738 superalloy for the presence of microconstit...

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Veröffentlicht in:Journal of materials science 2004-12, Vol.39 (24), p.7401-7404
Hauptverfasser: OJO, O. A, RICHARDS, N. L, CHATURVEDI, M. C
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Heat treatment
High temperature
Materials science
Metals. Metallurgy
Nickel base alloys
Superalloys
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Zusammenfassung:The aim of the present work was to investigate the cause and nature of the limiting incipient melting, which should aid development of appropriate higher solution heat treatment schedule. This was performed by examining the microstructure of as-cast IN 738 superalloy for the presence of microconstituents that might be responsible for incipient melting at temperatures below what is needed to dissolve the interdendrtic gamma' precipitate particles.
ISSN:0022-2461
1573-4803
DOI:10.1023/B:JMSC.0000048761.32712.eb