Coarsening behavior of Gamma Prime precipitates and concurrent transitions in the interface width in Ni-14 at%Al-7 at%Cr

Title
Coarsening behavior of Gamma Prime precipitates and concurrent transitions in the interface width in Ni-14 at%Al-7 at%Cr
Authors
S.MeherT.Rojhirunsakool황준연S.NagJ.TileyR.Banerjee
Keywords
Nickel superalloy; TEM; APT; Interface; Coarsening
Issue Date
2013-09
Publisher
Philosophical magazine letters
Citation
VOL 93, NO 9, 521-530
Abstract
Coupling atom probe tomography and transmission electron microscopy, the temporal evolution of γ′ precipitate morphology and size distribution and compositional width of the γ/γ′ interface, have been tracked in a model Ni-14Al-7Cr (at.%) alloy, during isothermal annealing at 800 °C subsequent to rapid quenching. During the initial annealing period, coalescence-dominated growth and coarsening of γ′ precipitates are accompanied by a gradual decrease in the interface width, eventually leading to classical LSW coarsening with a constant interface width at extended annealing time periods.
URI
http://pubs.kist.re.kr/handle/201004/45890
ISSN
09500839
Appears in Collections:
KIST Publication > Article
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