Christofidou, K.A. orcid.org/0000-0002-8064-5874, Robinson, K.J., Mignanelli, P.M. et al. (3 more authors) (2017) The effect of heat treatment on precipitation in the Cu-Ni-Al alloy Hiduron® 130. Materials Science and Engineering: A, 692. pp. 192-198. ISSN 0921-5093
Abstract
Cupronickel alloys, reinforced by L12 precipitates, offer a high strength, corrosion resistant and anti-bio fouling material for marine engineering applications. These alloys exhibit complex precipitate nucleation and growth mechanisms that must be fully understood in order to optimise the mechanical properties. In this work, the microstructural characteristics of the Cu-Ni-Al based alloy, Hiduron® 130, have been assessed in the as-received condition and following 100-h thermal exposures at 500, 600, 700 and 900 °C and after a two-stage exposure at 900 °C for 100 h followed by 500 °C for 100 h. The L12 phase was observed to precipitate both discontinuously and continuously and its subsequent coarsening was characterised alongside measurements of the lattice misfit. The hardness of the alloy was found to decrease with increasing exposure temperature up to the L12 solvus and correlated with the evolution of the L12 precipitates, the alloy grain size and the fraction of the discontinuously formed L12 phase.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Elsevier. This is an author produced version of a paper subsequently published in Materials Science and Engineering: A. 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: | Copper alloys; L12 phase; Microstructure; SEM; TEM; XRD |
Dates: |
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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: | 19 Sep 2019 14:38 |
Last Modified: | 19 Sep 2019 14:38 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.msea.2017.03.069 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:151102 |