Atom probe tomography investigations of microstructural evolution in an aged nickel superalloy for exhaust applications

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Title: Atom probe tomography investigations of microstructural evolution in an aged nickel superalloy for exhaust applications
Authors: Gardner, H
Pedrazzini, S
Douglas, JO
De Lille, D
Moody, MP
Bagot, PAJ
Item 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.
Issue Date: Apr-2019
Date of Acceptance: 14-Dec-2018
URI: http://hdl.handle.net/10044/1/66613
DOI: https://doi.org/10.1007/s11661-018-5098-x
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/Funder: Engineering and Physical Sciences Research Council
Funder's Grant Number: EP/M022803/1
Keywords: 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
Online Publication Date: 2019-01-18
Appears in Collections:Faculty of Engineering
Materials



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