Effect of Various Forms of Aluminum 6082 on the Mechanical Properties, Microstructure and Surface Modification of the Profile after Extrusion Process

Noga, Piotr; Piotrowicz, Andrzej; Skrzekut, Tomasz; Zwoliński, Adam; Strzępek, Paweł

doi:10.3390/ma14175066

Cited by 9 publications

(9 citation statements)

References 39 publications

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“…In the work [52] in which the AlSi 11 alloy was tested, plastic consolidation allowed to improve the tensile strength by 50 MPa compared to the solid material. In the papers [28,53], the authors examined aluminum alloys 6082 and 1370. Plastic consolidation allowed the obtention of strength properties comparable to those of a solid material, as in the analyzed article.…”

Section: Resultsmentioning

confidence: 99%

“…In other words, plastic consolidation is a set of technological operations during which dispersed metal forms are transformed into a solid material. Cohesive bonds between the material particles are formed and, as a result of PC, we can obtain a material that is characterized by a lower porosity and smaller grain size [28].…”

Section: Raw Materialsmentioning

confidence: 99%

“…Prior to extrusion, the batch material is usually heated to a certain temperature, which is above the solvus line temperature, but must be below the liquidus line temperature. By heating to an elevated temperature and selecting the appropriate parameters of the extrusion process, we can obtain products with appearances and properties very similar to those of products made of cast solid material [27,28,37].…”

Section: Raw Materialsmentioning

confidence: 99%

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Recycling of Hard Disk Drive Platters via Plastic Consolidation

Skrzekut,

Wędrychowicz,

Piotrowicz

2023

Materials

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The paper presents the comparison of two methods of recycling aluminum from HDD platters—the melting method and the method of plastic consolidation. The main elements of HDD memory, i.e., data carriers (platters), were examined via the percentage share of the total HDD mass and also via EDS analysis. The most common are platters made of the aluminum alloy series 5XXX, which are covered with a thin magnetic layer made of nickel. The research involved removing data carriers from about 30 HDDs and fragmenting them. The next step was to divide the platters into three groups; one was melted, the second was subjected to plastic consolidation, and the third group was fragmented into chips and also subjected to the consolidation process. Then, in the process of co-extrusion, rods were extruded from each material, and were subjected to EDS analysis, microstructure testing, Vickers hardness, and uniaxial tensile tests, and then the obtained results were compared. The obtained results of the microstructural tests in the case of gravity cast material confirmed the presence of the Al3Ni globular phase in the matrix. In the case of pressed and extruded materials, the Al3Ni phase appeared at the Ni-AlMg contact. After plastic consolidation, all the tested rods were characterized by their comparable strength properties (a tensile strength of 250 MPa and yield strength of 105 MPa).

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Section: Resultsmentioning

confidence: 99%

Section: Raw Materialsmentioning

confidence: 99%

Section: Raw Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Recycling of Hard Disk Drive Platters via Plastic Consolidation

Skrzekut,

Wędrychowicz,

Piotrowicz

2023

Materials

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“…Aluminum alloys have unique properties such as a high tensile strength to density ratio, susceptibility to plastic consolidation, good corrosion resistance, etc. [1][2][3]. For this reason, they have found widespread use in such industries as the automotive industry (e.g., load-bearing components of trucks, car air-conditioning components), shipbuilding and the aviation industry [4].…”

Section: Introductionmentioning

confidence: 99%

Research of Friction Stir Welding (FSW) and Electron Beam Welding (EBW) Process for 6082-T6 Aluminum Alloy

et al. 2023

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The paper presents the results of the joining tests of the EN AW-6082 T6 alloy. The materials were joined using the EBW high-energy (electron beam welding) and friction stir welding (FSW) methods. In the case of FSW welding, the following parameters were used: the linear speed was 355 mm/min, and the rotational speed of the welding tool was 710. In the case of EBW welding, the following parameters were used: accelerating voltage U = 120 kV, beam intensity I = 18.7 mA, welding speed v = 1600 mm/min and, in the case of a smoothing weld, U = 80 kV, beam intensity I = 17 mA, and welding speed v = 700 mm/min. Comprehensive microstructural tests of all welded joints (MO, SEM and TEM) and mechanical property tests (tensile and hardness tests) were carried out. The topographies of the fractures after the tensile test were also examined. Based on the results, it was found that the strength properties of the EBW joint were reduced by 23% and the FSW joint by 38% compared to the base material. A decrease in elongation was also noted, with an FSW elongation of 7.2% and an elongation of 2.7% for EBW. In the case of the EBW joint, magnesium evaporation was found in the weld during welding, while in the FSW joint, the dissolution of the Mg2Si particles responsible for strengthening the material during heat treatment to the T6 state was observed.

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“…The advantages of aluminum as a construction material, together with its lightness, are still a strong incentive to search for effective and economically effective methods of improving its strength properties. The goal of this research is also to obtain materials with a grain size of less than one micrometer [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Al-Si Alloys Produced by Rapid Solidification and Hot Extrusion

2023

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The paper presents the results of tests of rapid solidification (RS) aluminum alloys with the addition of silicon (5%, 11%, and 20%). Casting by melt-spinning on the surface of an intensively cooled copper cylinder allowed to obtain a metallic material in the form of flakes, which were then consolidated in the process of pressing and direct extrusion. The effect of refinement on structural components after rapid solidification was determined. Rapidly solidified AlSi materials are characterized by a comparable size of Si particles, regardless of the silicon content, and the shape of these particles is close to spheroidal. Not only Si particles are fragmented, but also the Al-Si-Fe phase, which also changed its shape from irregular with sharp edges to regular and spherical. The melt-spinning process resulted in a fine-grained structure compared to materials obtained by gravity-casting and extrusion. The influence of the high-temperature compression test on the mechanical properties of rapidly solidified materials was analyzed, and the results were compared with those of gravity-cast materials. An increase in strength properties was found in the case of the AlSi5 RS alloy by 20%, in the case of AlSi11RS by 25%, and in the case of the alloy containing 20% Si by as much as 86% (tensile test). On the basis of the homogeneity of the particle distribution determined by the SEM method, it was found that rapid solidification is an effective method of increasing the strength properties and improving the plastic properties of Al-Si alloys.

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Effect of Various Forms of Aluminum 6082 on the Mechanical Properties, Microstructure and Surface Modification of the Profile after Extrusion Process

Cited by 9 publications

References 39 publications

Recycling of Hard Disk Drive Platters via Plastic Consolidation

Recycling of Hard Disk Drive Platters via Plastic Consolidation

Research of Friction Stir Welding (FSW) and Electron Beam Welding (EBW) Process for 6082-T6 Aluminum Alloy

Microstructure and Mechanical Properties of Al-Si Alloys Produced by Rapid Solidification and Hot Extrusion

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