Formability of aluminium sheets manufactured by solid state recycling

Kore, A S; Nayak, Kanhu Charan; Date, Prashant P.

doi:10.1088/1742-6596/896/1/012007

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…Only one cup out of four could be produced successfully indicating a low formability of the sheets. Further work was done by Kore et al [16]. Crushed aluminium AA6082 chips were compacted into slabs with a square cross-section (cold and hot) and then further processed by a hot rolling process.…”

Section: Production Of Metal Sheets By Hot Extrusion and Rollingmentioning

confidence: 99%

Production and Subsequent Forming of Chip-Based Aluminium Sheets Without Remelting

Schulze

Hering

Tekkaya

2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Bent components and deep drawn cups are produced by direct usage of aluminium chips without melting following a new process chain: hot extrusion of aluminium chips to a cylindrical open profile, flattening, subsequent rolling and bending or deep drawing. The properties of the hot extruded chip-based AA6060 sheets are examined by tensile tests and microstructural investigations and the results are compared with those obtained from material extruded from conventional cast billets. The chip-based sheets were used to form components by bending or deep drawing. No significant differences between the bent components or deep-drawn cups made of chips and those from cast material are observed regarding their capability for further plastic forming operations. This makes the new process route a resource-efficient alternative for the production of aluminium sheet products.

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Section: Production Of Metal Sheets By Hot Extrusion and Rollingmentioning

confidence: 99%

Production and Subsequent Forming of Chip-Based Aluminium Sheets Without Remelting

Schulze

Hering

Tekkaya

2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…However, aluminum recycling comes with its own set of complications. For instance, the conventional recycling approach of melting and reforging the material incurs heavy material losses as only about 55% of initial scrap material is deemed recoverable [7]. The conventional approach also leads to GHG emissions albeit at a much lower scale compared to primary aluminum refining.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Characterization of the Perforation Behaviour of Direct Recycled Aluminum Alloy 6061 Plates Subjected to High-Velocity Impact

Irfan Alias Farhan Latif,

Mohd Khir Mohd Nor,

Nur Kamilah Yusuf

et al. 2024

ARAM

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This study aims to establish the perforation behaviour of direct recycled AA6061 to help establish the properties of the current most optimized direct recycled AA6061 through the hot press forging technique. This was achieved by subjecting direct recycled AA6061 plates of varying thickness to high-velocity impacts using a single-stage gas gun setup. The impactor is a hemispherical steel projectile of 13mm in length and 8.5mm in diameter. Plates of 3,4,5 and 10mm thickness were tested at velocities ranging from 120 m/s to 402 m/s. The deformation profiles of the impacted plates were captured and analyzed to quantitatively establish the perforation behaviour of recycled AA6061 plates. The plates showed irregular and non-axis symmetric patterns of deformation hinting the material exhibits anisotropic properties. The changes in the deformation profile were investigated in relation to changes in impact velocities and plate thickness were made to understand how they impact the profile. The deformation area was observed to be decreasing when the bullet impact velocity was increased. Higher velocity impact events lead to more material ejection from the plate in the form of fragmentation. Additionally, the deformation zone was observed to be getting smaller with an increase in the thickness of the plate. Thicker plates were found to have more fragmentation compared to thinner plates. Ductile failure characteristics such as petal formation and plugging were observed along with brittle characteristics such as fragmentation and conal fractures. Lower-velocity impacts lead to more energy absorbed by the target plates. Thicker plates observed more of the bullet’s energy. Through experimentation, the deformation behaviour of the directly recycled AA6061 material was established. This data can be used as a base for further research into the material’s behaviour characterisation.

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“…Solid state recycling involves the formation of a billet starting from shredded particles and/or powders. Several routes are possible, such as hot compression [18], hot rolling [19], cold/hot extrusion of chips, Spark Plasma Sintering (SPS) with compaction and extrusion [20], friction consolidation through a rotative die plunge [21], Submerged Arc Welding (SAW) of metal chips and metal waste [22]. Although technically feasible, in solid-state recycling, the material must be available in form of small pieces (or powder), requiring a shredding stage in the product's life cycle.…”

Section: Introductionmentioning

confidence: 99%

Energy measurements and LCA of remanufactured automotive steel sheets

FARIOLI

2023

Materials Research Proceedings

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Abstract. New paradigms based on Circular Economy (CE) principles are needed for boosting the ecological transition and improving the energy and material efficiency. In this paper, a novel remanufacturing process chain for End-of-Life (EoL) automotive panels is first presented. The core of the recycling strategy is the reshaping of curved EoL automotive sheets through flattening by means of a hydraulic press. Flattening experiments together with press power consumption measurements have been performed on thin steel parts. While the experimental procedure demonstrated the technical feasibility of flattening “small-scale” steel parts, a more complete analysis on environmental sustainability was required. For this purpose, a Life Cycle Assessment (LCA) of the remanufacturing process chain proposed was set up. The results of the study demonstrated that flattening is a viable solution for reshaping EoL automotive panels, and that, for one kg of reshaped steel, approximately 2.2 kg CO2 and 24 MJ could be saved.

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Formability of aluminium sheets manufactured by solid state recycling

Cited by 11 publications

References 6 publications

Production and Subsequent Forming of Chip-Based Aluminium Sheets Without Remelting

Production and Subsequent Forming of Chip-Based Aluminium Sheets Without Remelting

Quantitative Characterization of the Perforation Behaviour of Direct Recycled Aluminum Alloy 6061 Plates Subjected to High-Velocity Impact

Energy measurements and LCA of remanufactured automotive steel sheets

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