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Title: | Recycling-Oriented Design of the Al-Zn-Mg-Ca Alloys |
Authors: | Shurkin, P Belov, N Akopyan, T Karpova, Z |
Keywords: | Al-Zn-Mg-Ca alloys;iron;silicon;recycling;phase composition;microstructure |
Issue Date: | 18-Feb-2021 |
Publisher: | MDPI |
Citation: | Shurkin, P. et al. (2021) 'Recycling-Oriented Design of the Al-Zn-Mg-Ca Alloys', Materials Proceedings, 3 (1), pp. 1 - 13. doi: 10.3390/iec2m-09250. |
Abstract: | Approaches to the design of recycling-tolerant Al-Zn-Mg alloys were formulated to be achieved via combined Ca, Fe, and Si, and appropriate solidification conditions and heat treatment. A CalPhaD calculation and experimental study were employed for analysis of the Al-8%Zn-3%Mg alloy doped with 1–2%Ca, 0.5%Fe, and 0.5%Si. The Al-8%Zn-3%Mg-1%Ca-0.5%Fe-0.5%Si (AlZnMg1CaFeSi) alloy was preliminarily found to be promising since it showed a high equilibrium solidus, and an as-cast structure including curved phases (Al), Al3Fe, Al2CaSi2, Al10CaFe2, and (Al, Zn)4Ca; favouring a further spheroidization response during a two-step annealing at 450 °C, 3 h + 520 °C, 3 h. Furthermore, the alloy showed an excellent age-hardening response (195 HV, T6), which did not yield the values of the base alloy and outperformed the values of the other experimental counterparts. Regarding feasibility, 80% reduction hot rolling was successfully conducted, as well as a brief comparison with commercial 6063 impurity-tolerant alloys. As it showed qualitatively similar structural patterns and Fe and Si alloying opportunities, the AlZnMg1CaFeSi alloy may serve as a sustainable basis for the further development of high-strength aluminum alloys tailored for manufacture from scrap materials. |
Description: | Presented at the 1st International Electronic Conference on Metallurgy and Metals, 22 February–7 March 2021; Available online: https://iec2m.sciforum.net/. |
URI: | https://bura.brunel.ac.uk/handle/2438/28419 |
DOI: | https://doi.org/10.3390/iec2m-09250 |
Other Identifiers: | ORCiD: Pavel Shurkin https://orcid.org/0000-0003-0206-6911 ORCiD: Torgom Akopyan https://orcid.org/0000-0001-9112-8584 7 |
Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
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