Atom probe tomography investigations of microstructural evolution in an aged nickel superalloy for exhaust applications
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The formation and evolution of nanoscale γ″ (Ni3(Nb, Ti, Al)) precipitates formed during thermal aging in the nickel superalloy Inconel 625 has been characterized using Atom Probe Tomography. The onset of γ″ precipitation has been found to occur after only one hour, markedly shorter than the aging time reported in the current literature. Evolution of precipitate composition and morphology during aging has been analyzed, and the potential onset of the γ″ → δ (Ni3(Nb, Mo, Cr, Fe, Ti)) transformation after long aging times is discussed.
Date Issued
2019-04
Date Acceptance
2018-12-14
Citation
Metallurgical and Materials Transactions A, 2019, 50 (4), pp.1862-1872
ISSN
1073-5623
Publisher
Springer Nature
Start Page
1862
End Page
1872
Journal / Book Title
Metallurgical and Materials Transactions A
Volume
50
Issue
4
Copyright Statement
© 2019 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Sponsor
Engineering and Physical Sciences Research Council
Grant Number
EP/M022803/1
Subjects
Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
HEAT-TREATMENT
TEMPERATURE
PRECIPITATION
0912 Materials Engineering
0306 Physical Chemistry (incl. Structural)
0913 Mechanical Engineering
Materials
Publication Status
Published
Date Publish Online
2019-01-18