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DC Field | Value | Language |
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dc.contributor.author | Chankitmunkong, S | - |
dc.contributor.author | Eskin, DG | - |
dc.contributor.author | Patakham, U | - |
dc.contributor.author | Chancharoen, W | - |
dc.contributor.author | Seehanam, S | - |
dc.contributor.author | Limmaneevichitr, C | - |
dc.contributor.author | Pandee, P | - |
dc.date.accessioned | 2024-08-12T08:50:25Z | - |
dc.date.available | 2024-08-12T08:50:25Z | - |
dc.date.issued | 2024-07-20 | - |
dc.identifier | ORCiD: Dmitry G. Eskin https://orcid.org/0000-0002-0303-2249 | - |
dc.identifier | 16755 | - |
dc.identifier.citation | Chankitmunkong, S. et al. (2024) 'The improvement of deformability in AA7075 alloy through cryogenic treatment and its correlation with microstructural evolution and FE modelling', Scientific Reports, 14 (1), 16755, pp. 1 - 10. doi: 10.1038/s41598-024-67518-4. | en_US |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/29536 | - |
dc.description | Data availability: The data that support the findings of this study are available from the corresponding author upon reasonable request. | en_US |
dc.description.abstract | Cryogenic treatment has high potential for improving the deformation behavior through the recrystallization at a low temperature. In this work, true stress–strain curves were obtained via compression tests to understand the deformation behavior of an AA7075 under cryogenic conditions. Results showed a significant improvement in the flow stress of AA7075, increasing from 260 to 560 MPa at the yield point. The strain hardening exponent (n) also increased from 0.25 to 0.35 after deformation at cryogenic temperatures. The presence of Al2CuMg phase influenced the deformation texture of the tested aluminum alloy, resulting in more elongated grains and fine sub-grains after deformation at cryogenic temperatures, due to the hindered recrystallization. Microstructure evolution after deformation at room and cryogenic temperatures was investigated using EBSD technique to characterize texture and recrystallized grains. The results indicated that the spacing of the high-angle grain boundaries (HAGBs) in the sample deformed at room temperature was slightly larger than in the cryogenically treated sample. The alloy deformed at the cryogenic temperature exhibited a higher strain hardening exponent (n = 0.35) compared to room temperature deformation (n = 0.25). Furthermore, finite element analysis supported the experimental findings, showing that the Plastic Equivalent Strain (PEEQ) of the model tested at cryogenic temperature was higher than at room temperature, attributed to grain refinement during low-temperature deformation. The calculated effective stress responses at cryogenic temperatures for the investigated flow stress aligned well with the experimental results. These new aspects and mechanisms of deformation of aluminum alloys at cryogenic temperatures can improve the formability of high-strength alloys in the future production of more complex and integrated lightweight components. | en_US |
dc.description.sponsorship | The authors acknowledge the financial support provided by the Office of National Higher Education Science Research and Innovation Policy Council (NXPO), Thailand, through Program Management Unit for Human Resources & Institutional Development, Research and Innovation (PMU-B), Grant No. B05F63098. | en_US |
dc.format.extent | 1 - 10 | - |
dc.format.medium | Electronic | - |
dc.language | English | - |
dc.language.iso | en_US | en_US |
dc.publisher | Nature Research (part of Springer Nature) | en_US |
dc.rights | Copyright © The Author(s) 2024. Rights and permissions: Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/. | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.subject | recrystallization | en_US |
dc.subject | true stress-strain curves | en_US |
dc.subject | Al2CuMg phase | en_US |
dc.subject | plastic equivalent strain (PEEQ) | en_US |
dc.title | The improvement of deformability in AA7075 alloy through cryogenic treatment and its correlation with microstructural evolution and FE modelling | en_US |
dc.type | Article | en_US |
dc.date.dateAccepted | 2024-07-11 | - |
dc.identifier.doi | https://doi.org/10.1038/s41598-024-67518-4 | - |
dc.relation.isPartOf | Scientific Reports | - |
pubs.issue | 1 | - |
pubs.publication-status | Published online | - |
pubs.volume | 14 | - |
dc.identifier.eissn | 2045-2322 | - |
dc.rights.license | https://creativecommons.org/licenses/by/4.0/legalcode.en | - |
dc.rights.holder | The Author(s) | - |
Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
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