Thermo-Mechanical Processing of Rapidly Solidified 5083 Aluminium Alloy - Structure and Mechanical Properties

Tokarski, Tomasz

doi:10.1515/amm-2015-0028

Cited by 6 publications

(1 citation statement)

References 10 publications

(14 reference statements)

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“…Rapid solidification process (RS) is one of the most attractive technologies for materials preparation, which allows circumventing limitations associated with conventional material solidification processing. Particularly, the rapid solidification lead to microstructure refinement, extension of the solid solubility of alloying elements, reduction of the alloying elements segregation and the development of transition and metastable phases that are not observed during conventional casting [1][2][3]. Structural effects of RS technique are particularly useful for the strengthening of aluminum alloys containing Transition Metals (TM) such as Fe, Cr, Ni, Co, Mn, V etc.…”

Section: Introductionmentioning

confidence: 99%

Structure and Properties Studies of Rapidly Solidified Al-Mn Alloys

Kula¹,

Błaż²,

Lobry³

2016

KEM

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Rapid solidification (RS) combined with plastic consolidation by hot extrusion was used to produce Al alloys with additions of varied concentration of Mn. RS flakes were manufactured using an inert gas atomizing of the molten alloy and the spray deposition on the water-cooled cooper roll. Rods of 7mm in diameter were received using cold pressing of RS-flakes, vacuum degassing and hot extrusion procedures. Mechanical properties of as extruded materials were tested in hot compression at temperature range 293K - 773K. It was found that the flow stress was reduced monotonically with deformation temperature for all tested materials. RS alloys exhibit higher mechanical properties than those produced by conventional metallurgy methods. Higher mechanical properties of RS materials are ascribed to beneficial particles morphology obtained due to the rapid solidification. Development of fine Al6Mn particles was observed in all tested RS-materials.

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Section: Introductionmentioning

confidence: 99%

Structure and Properties Studies of Rapidly Solidified Al-Mn Alloys

Kula¹,

Błaż²,

Lobry³

2016

KEM

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Mechanical Properties of Solid-State Recycled 4xxx Aluminum Alloy Chips

Tokarski

2016

J. of Materi Eng and Perform

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The direct production of aluminum from bauxite ores is known to be a very energetic-intensive operation compared to other metallurgical processes. Due to energy issues and the rapid increase in aluminum demand, new kinds of aluminum production processes are required. Aluminum waste recycling, which has an advantage of lowering the cost of electric power consumption, is considered to be an alternative route for material manufacturing. In this work, the way of reusing aluminum EN-AC 44000 alloy scraps by hot extrusion was presented. Metal chips of different sizes and morphology were cold compacted into billet form and then hot extruded. Mechanical properties investigations combined with microstructure observations were performed. Mechanical anisotropy behavior of material was evaluated on the base of tensile test experiments performed on samples machined at 0°, 45°, and 90°, respectively, to the extrusion direction. It was found that the initial size of the chips has an influence on the mechanical properties of the received profiles. Samples produced from fine chips revealed higher tensile strength in comparison to larger chips, which can be attributed to a refined microstructure containing fine, hard Si particles and Fe-rich intermetallic phases. Finally, it was found that anisotropic behavior of chip-based profiles is similar to conventionally cast and extruded materials which prove good bonding quality between chips.

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