Isotropy of precipitate distribution in pre-stretched Al-Cu-(Sc)-(Zr) alloys Jiang, L, Langan, T, Wood, T, Sanders, P and Dorin, Thomas 2022, Isotropy of precipitate distribution in pre-stretched Al-Cu-(Sc)-(Zr) alloys, Scripta Materialia, vol. 210, doi: 10.1016/j.scriptamat.2021.114452. Attached Files Name Description MIMEType Size Downloads Title Isotropy of precipitate distribution in pre-stretched Al-Cu-(Sc)-(Zr) alloys Author(s) Jiang, L Langan, T Wood, T Sanders, P Dorin, Thomas orcid.org/0000-0002-1033-961X Journal name Scripta Materialia Volume number 210 Publisher P Publication date 2022-03-15 ISSN 1359-6462 Summary Pre-stretching prior to ageing in Al-Cu alloys leads to preferential formation of precipitates in certain habit planes and produces anisotropic mechanical properties. In this work, we attempt to eliminate this problematic anisotropy by adding Sc and Zr to an Al-Cu alloy. When pre-stretching the binary Al-Cu alloy along the [001]Al zone axis, transmission electron microscopy (TEM) reveals that precipitation of θ″ occurs mostly on the (001)Al plane (and not on the (100)Al and (010)Al planes). This “stress orienting effect” is caused by the local change in elastic strain energy induced by the pre-stretching. In the pre-stretched Al-Cu-Sc-Zr alloy, the presence of coherent Al3(Sc, Zr) dispersoids is found to promote equivalent nucleation of θ′ precipitates in all three habit planes (at the expense of θ″), resulting an isotropic precipitate distribution. The strengthening potential of these different precipitate distributions is analytically modelled and discussed. DOI 10.1016/j.scriptamat.2021.114452 Indigenous content off Field of Research 0204 Condensed Matter Physics 0912 Materials Engineering 0913 Mechanical Engineering Persistent URL http://hdl.handle.net/10536/DRO/DU:30161168 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges   Connect to Elements publication management system Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Mon, 10 Jan 2022, 09:07:15 EST Wed, 12 Jan 2022, 14:14:38 EST Fri, 13 May 2022, 06:03:25 EST Fri, 08 Jul 2022, 08:35:30 EST Fri, 08 Jul 2022, 12:12:26 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 3 times in Scopus Search Google Scholar Access Statistics: 18 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Mon, 10 Jan 2022, 09:07:15 EST