ATOM-PROBE ANALYSIS OF NICKEL-BASED SUPERALLOY IN-718 WITH BORON AND PHOSPHORUS ADDITIONS

Authors
SIJBRANDIJ SJ MILLER MK HORTON JA CAO WD
Citation
Sj. Sijbrandij et al., ATOM-PROBE ANALYSIS OF NICKEL-BASED SUPERALLOY IN-718 WITH BORON AND PHOSPHORUS ADDITIONS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 250(1), 1998, pp. 115-119
Citations number
9
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
250
Issue
1
Year of publication
1998
Pages
115 - 119
Database
ISI
SICI code
0921-5093(1998)250:1<115:AAONSI>2.0.ZU;2-Z
Abstract
The effects of controlled additions of boron and phosphorus to nickel- based superalloy IN-718 have been investigated by atom probe field ion microscopy in specimens subjected to a long term heat treatment (6 mo nths at 704 degrees C). The predominant gamma, gamma' and gamma '' pha ses were found to be depleted in boron and phosphorus, and no segregat ion was detected at gamma-gamma' and gamma-gamma '' interfaces. Signif icant phosphorus enrichments were found in the minor sigma and Laves p hases. (C) 1998 Elsevier Science S.A. All rights reserved.