Direct hot rolling as a solid-state recycling process for green sheets production

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Standard

Direct hot rolling as a solid-state recycling process for green sheets production. / El Mehtedi, Mohamad; Ben Khalifa, Noomane; Buonadonna, Pasquale et al.
28th International ESAFORM Conference on Material Forming, ESAFORM 2025. ed. / Pierpaolo Carlone; Luigino Filice; Domenico Umbrello. Association of American Publishers, 2025. p. 1449-1459 (Materials Research Proceedings; Vol. 54).

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Harvard

El Mehtedi, M, Ben Khalifa, N, Buonadonna, P, El Mohtadi, R, Marongiu, G, Aymerich, F & Carta, M 2025, Direct hot rolling as a solid-state recycling process for green sheets production. in P Carlone, L Filice & D Umbrello (eds), 28th International ESAFORM Conference on Material Forming, ESAFORM 2025. Materials Research Proceedings, vol. 54, Association of American Publishers, pp. 1449-1459, 28th International ESAFORM Conference on Material Forming, ESAFORM 2025, Paestum, Italy, 07.05.25. https://doi.org/10.21741/9781644903599-158

APA

El Mehtedi, M., Ben Khalifa, N., Buonadonna, P., El Mohtadi, R., Marongiu, G., Aymerich, F., & Carta, M. (2025). Direct hot rolling as a solid-state recycling process for green sheets production. In P. Carlone, L. Filice, & D. Umbrello (Eds.), 28th International ESAFORM Conference on Material Forming, ESAFORM 2025 (pp. 1449-1459). (Materials Research Proceedings; Vol. 54). Association of American Publishers. https://doi.org/10.21741/9781644903599-158

Vancouver

El Mehtedi M, Ben Khalifa N, Buonadonna P, El Mohtadi R, Marongiu G, Aymerich F et al. Direct hot rolling as a solid-state recycling process for green sheets production. In Carlone P, Filice L, Umbrello D, editors, 28th International ESAFORM Conference on Material Forming, ESAFORM 2025. Association of American Publishers. 2025. p. 1449-1459. (Materials Research Proceedings). doi: 10.21741/9781644903599-158

Bibtex

@inbook{05a687472cc5457d855f3a316bc99f07,
title = "Direct hot rolling as a solid-state recycling process for green sheets production",
abstract = "With the increasing demand for sustainable solutions in the recycling of aluminum alloys, solid-state recycling (SSR) offers an energy-efficient alternative by avoiding the melting phase, which typically leads to high energy consumption and material loss. This study presents a novel SSR process utilizing direct hot rolling to recycle aluminum alloy chips (EN AW-5754). The main objective is to evaluate this process's feasibility and assess the recycled sheets' mechanical and microstructural properties. Aluminum alloy chips were produced from the turning process of EN AW-AA5754 bars. The chips were compacted and subsequently heat-treated at 400°C for 2 hours. The compacted samples were then hot rolled in multiple passes, with a final cold rolling step to achieve a final thickness of 0,8 mm. Mechanical properties and microstructure were analyzed using tensile testing machine and SEM-EBSD technique. The recycled samples demonstrated mechanical properties comparable to those of reference material. SEM/EBSD analysis revealed broken oxides and a layered grain structure due to the prior chips{\textquoteright} boundaries. Overall, the results confirm that direct hot rolling can be a viable recycling method for aluminum alloys, offering significant energy and material savings compared to conventional processes.",
keywords = "Chips, Direct Hot Rolling, EBSD, EN AW-5754, Solid-State Recycling, Tensile Tests, Engineering",
author = "{El Mehtedi}, Mohamad and {Ben Khalifa}, Noomane and Pasquale Buonadonna and {El Mohtadi}, Rayane and Gianluca Marongiu and Francesco Aymerich and Mauro Carta",
note = "Publisher Copyright: {\textcopyright} 2025, Association of American Publishers. All rights reserved.; 28th International ESAFORM Conference on Material Forming, ESAFORM 2025 ; Conference date: 07-05-2025 Through 09-05-2025",
year = "2025",
doi = "10.21741/9781644903599-158",
language = "English",
isbn = "9781644903599",
series = "Materials Research Proceedings",
publisher = "Association of American Publishers",
pages = "1449--1459",
editor = "Pierpaolo Carlone and Luigino Filice and Domenico Umbrello",
booktitle = "28th International ESAFORM Conference on Material Forming, ESAFORM 2025",
address = "United States",

}

RIS

TY - CHAP

T1 - Direct hot rolling as a solid-state recycling process for green sheets production

AU - El Mehtedi, Mohamad

AU - Ben Khalifa, Noomane

AU - Buonadonna, Pasquale

AU - El Mohtadi, Rayane

AU - Marongiu, Gianluca

AU - Aymerich, Francesco

AU - Carta, Mauro

N1 - Publisher Copyright: © 2025, Association of American Publishers. All rights reserved.

PY - 2025

Y1 - 2025

N2 - With the increasing demand for sustainable solutions in the recycling of aluminum alloys, solid-state recycling (SSR) offers an energy-efficient alternative by avoiding the melting phase, which typically leads to high energy consumption and material loss. This study presents a novel SSR process utilizing direct hot rolling to recycle aluminum alloy chips (EN AW-5754). The main objective is to evaluate this process's feasibility and assess the recycled sheets' mechanical and microstructural properties. Aluminum alloy chips were produced from the turning process of EN AW-AA5754 bars. The chips were compacted and subsequently heat-treated at 400°C for 2 hours. The compacted samples were then hot rolled in multiple passes, with a final cold rolling step to achieve a final thickness of 0,8 mm. Mechanical properties and microstructure were analyzed using tensile testing machine and SEM-EBSD technique. The recycled samples demonstrated mechanical properties comparable to those of reference material. SEM/EBSD analysis revealed broken oxides and a layered grain structure due to the prior chips’ boundaries. Overall, the results confirm that direct hot rolling can be a viable recycling method for aluminum alloys, offering significant energy and material savings compared to conventional processes.

AB - With the increasing demand for sustainable solutions in the recycling of aluminum alloys, solid-state recycling (SSR) offers an energy-efficient alternative by avoiding the melting phase, which typically leads to high energy consumption and material loss. This study presents a novel SSR process utilizing direct hot rolling to recycle aluminum alloy chips (EN AW-5754). The main objective is to evaluate this process's feasibility and assess the recycled sheets' mechanical and microstructural properties. Aluminum alloy chips were produced from the turning process of EN AW-AA5754 bars. The chips were compacted and subsequently heat-treated at 400°C for 2 hours. The compacted samples were then hot rolled in multiple passes, with a final cold rolling step to achieve a final thickness of 0,8 mm. Mechanical properties and microstructure were analyzed using tensile testing machine and SEM-EBSD technique. The recycled samples demonstrated mechanical properties comparable to those of reference material. SEM/EBSD analysis revealed broken oxides and a layered grain structure due to the prior chips’ boundaries. Overall, the results confirm that direct hot rolling can be a viable recycling method for aluminum alloys, offering significant energy and material savings compared to conventional processes.

KW - Chips

KW - Direct Hot Rolling

KW - EBSD

KW - EN AW-5754

KW - Solid-State Recycling

KW - Tensile Tests

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=105008067022&partnerID=8YFLogxK

U2 - 10.21741/9781644903599-158

DO - 10.21741/9781644903599-158

M3 - Article in conference proceedings

AN - SCOPUS:105008067022

SN - 9781644903599

T3 - Materials Research Proceedings

SP - 1449

EP - 1459

BT - 28th International ESAFORM Conference on Material Forming, ESAFORM 2025

A2 - Carlone, Pierpaolo

A2 - Filice, Luigino

A2 - Umbrello, Domenico

PB - Association of American Publishers

T2 - 28th International ESAFORM Conference on Material Forming, ESAFORM 2025

Y2 - 7 May 2025 through 9 May 2025

ER -