Moore, I.J., Burke, M.G. and Palmiere, E.J. orcid.org/0000-0002-4048-8536 (2016) Modelling the nucleation, growth and coarsening kinetics of γ<sup>″</sup> (D0<inf>22</inf>) precipitates in the Ni-base Alloy 625. Acta Materialia, 119. pp. 157-166. ISSN 1359-6454
Abstract
Alloy 625 is susceptible to significant precipitation hardening through the formation of γ″ (D022-NbNi3) particles. These precipitates can form both during manufacture and in high temperature service and, consequently, the accurate prediction of their behaviour is crucial. To this end, a model is presented here which describes γ″ precipitation in Alloy 625, encompassing the concurrent nucleation, growth and coarsening of different particles and allowing for the particles to be shape changing. This model is calibrated with respect to the experimentally measured aspect ratio evolution observed at 650 °C. The resultant outputs for interfacial energy, particle size distribution and number density are in agreement with experimental data for a simulation of 1000 h at 650 °C.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2016 Elsevier. This is an author produced version of a paper subsequently published in Acta Materialia. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
Keywords: | Modelling; Precipitation kinetics; Coarsening; Nickel-base alloys; γ″ |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Sep 2016 13:37 |
Last Modified: | 03 Apr 2019 11:04 |
Published Version: | https://dx.doi.org/10.1016/j.actamat.2016.08.027 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.actamat.2016.08.027 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:104401 |