Brunel University Research Archive(BURA) preserves and enables easy and open access to all
types of digital content. It showcases Brunel's research outputs.
Research contained within BURA is open access, although some publications may be subject
to publisher imposed embargoes. All awarded PhD theses are also archived on BURA.
Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/26955| Title: | A novel Al-Si-Ni-Fe near-eutectic alloy for elevated temperature applications |
| Authors: | Cai, Q Fang, C Lordan, E Wang, Y Chang, ITH Cantor, B |
| Keywords: | suction casting;aluminium alloys;thermal stability;intermetallic eutectics |
| Issue Date: | 8-Aug-2023 |
| Publisher: | Elsevier |
| Citation: | Cai, Q. et al. (2023) 'A novel Al-Si-Ni-Fe near-eutectic alloy for elevated temperature applications', Scripta Materialia, 237, 115707, pp. 1 - 7. doi: 10.1016/j.scriptamat.2023.115707. |
| Abstract: | Copyright © 2023 The Authors. A novel near-eutectic Al-15.0Si-4.1Ni-1.9Fe (wt%) alloy with a ternary eutectic reaction of Liquid→α-Al+Si+(Al,Si)5(Fe,Ni) was investigated. Eutectic Si and (Al,Si)5(Fe,Ni) phases exhibit short nanoscale fibrous morphologies with volume fractions of 14.3 ± 1.6% and 15.1 ± 1.9%, respectively. The (Al,Si)5(Fe,Ni) phase has a tetragonal Al2.7FeSi2.3-type crystal structure with excellent thermal stability, which contributes to high mechanical properties at room and elevated temperatures. First-principles density-functional theory (DFT) calculations reveal its chemical composition of tetragonal (Al4.75Si0.25)(Fe0.5Ni0.5) having Si solution at the Al sites with two Fe neighbours contributes to the lowest solution energy. The newly developed alloy has superior mechanical properties at room and elevated temperatures compared with other typical heat-resistant aluminium alloys, which has great potential for industrial applications. |
| Description: | Supplementary materials are available online at https://www.sciencedirect.com/science/article/pii/S135964622300430X?via%3Dihub#sec0002 . |
| URI: | https://bura.brunel.ac.uk/handle/2438/26955 |
| DOI: | https://doi.org/10.1016/j.scriptamat.2023.115707 |
| ISSN: | 1359-6462 |
| Other Identifiers: | ORCID iDs: Changming Fang https://orcid.org/0000-0003-0915-7453; Ewan Lordan https://orcid.org/0000-0001-8890-4634; Yun Wang https://orcid.org/0000-0003-2367-7666; Isaac T. H. Chang https://orcid.org/0000-0003-4296-1240. 115707 |
| Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| FullText.pdf | Copyright © 2023 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc. This is an open access article under a Creative Commons license (https://creativecommons.org/licenses/by/4.0/). | 13 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License
