Resource-Saving technology for the production of cast aluminum alloys

Деев, В. Б.; Degtyar, V. A.; Kutsenko, A. I.; Selyanin, I. F.; Voitkov, A. P.

doi:10.3103/s0967091207120054

Cited by 15 publications

(7 citation statements)

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“…Nowadays, aluminum and its alloys are among the most promising materials [1][2][3][4][5][6][7]. One of the most common problems in the production of aluminum sheets and strips is the texture that develops during thermomechanical processing, which leads to anisotropy of mechanical properties that, in turn, reduces the stability of cold forming operations.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Intermetallic Compounds Fragmentation Impact on the Formation of Texture during the as Cast Structure Thermomechanical Treatment of Aluminum Alloys

Aryshenskii

Hirsch

Konovalov

2021

Metals

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In this work, the influence of the intermetallic particle fragmentation during hot rolling of the as cast structure on the evolution of textures in aluminum alloys 8011, 5182 and 1565 was investigated. For this purpose, laboratory multi-pass rolling of the cast material was carried out. At various degrees of hot rolling deformation, the process was stopped, and the metal was quenched and sent for optical and electron microscopy to investigate the large intermetallic particles. In addition, the grain structure was studied and an X-ray analysis was carried out in order to determine the main texture components. Some of the samples were held at a temperature above the recrystallization threshold and then cooled in air; the grain structure and texture composition were also studied. In addition, the simulation of the texture evolution was carried out under various modes of rolling of aluminum alloys, taking into account the process of fragmentation of intermetallic particles. The investigation showed that intermetallic compounds with a deformation degree of 1.8, on average, decrease the particle size by 5–7 times. The large eutectic particles remaining after homogenization are drawn out in the direction of deformation and are crushed, increasing their number accordingly. Therefore, the most favorable stage for the formation of recrystallization nuclei on particles is the moment when they are already numerous and their sizes are much larger than subgrains. Simulation of hot rolling of the investigated alloys showed that considering the factor of fragmentation of intermetallic particles during hot deformation of the as-cast structure significantly increases the accuracy of the results.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Intermetallic Compounds Fragmentation Impact on the Formation of Texture during the as Cast Structure Thermomechanical Treatment of Aluminum Alloys

Aryshenskii

Hirsch

Konovalov

2021

Metals

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“…The improvement of casting and thermomechanical treatment practices is one of the most demanding aspect of modern material science [1][2][3][4][5][6]. Combination of high plasticity, fairly low density and reasonable strength makes aluminum alloys indispensable in multiple present-day industries [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Mg Content on Texture Development during Hot Plain-Strain Deformation of Aluminum Alloys

Aryshenskii

Hirsch

Konovalov

et al. 2021

Metals

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The study addresses the effect of magnesium and other alloying elements on rolling “β-fiber” texture formation during hot deformation of aluminum alloys. For the study, flat cast ingots from three aluminum alloys with variable magnesium content were deformed in a Gleeble testing unit with different parameters of thermomechanical treatment. Immediately after completion of deformation, the samples were quenched using an automatic cooling system and the microstructure and crystalline texture was analyzed by optical microscopy and X-ray analysis. The analysis demonstrated that an increase in alloying components, magnesium in particular, leads to an increase in brass-type texture and a decrease in S and copper-type texture. The reason was that the simulation of the deformation texture development revealed a great contribution of impurity atoms rather than the decrease in stacking fault energy.

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“…When producing ingots of aluminum alloys by var ious occurring methods of casting, resource saving technologies which make it possible to use an increased amount of secondary materials (wastes) are actively developed [1][2][3][4][5][6][7]. The quality of fabricated ingots corresponds to the required conditions [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Investigation into the density of polystyrene foam models when implementing the resource-saving fabrication technology of thin-wall aluminum sheet

Деев

Ponomareva

Yudin

2015

Russ. J. Non-ferrous Metals

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The influence of density of polystyrene foam models on the quality of thin wall casts of the cap of the gas analyzer case made of AK7 alloy smelted based on wastes of home manufacture (the charge contained 50-55% secondary materials) is investigated in conditions of OOO Research and Production Enterprise "Vektor Mashinostroeniya" (Novokuznetsk). To foam polystyrene (produced by STYROCHEM, Montreal, Canada) and fabricate the models, a GK 100 3M autoclave is used. Varying temporal and time autoclave modes, we acquire different densities of the model ρ = 0.017, 0.019, 0.022, 0.024, and 0.026 g/cm 3 . Based on the experimental investigations, the values of this index (ρ = 0.022-0.024 g/cm 3 ) at which the model pos sesses the required surface quality, rigidity, and burnability promoting the minimization of linear defects (mis match with required geometric sizes, seal, misrun) when fabricating thin wall casts with specified properties are determined and substantiated.

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Resource-Saving technology for the production of cast aluminum alloys

Cited by 15 publications

References 0 publications

Investigation of the Intermetallic Compounds Fragmentation Impact on the Formation of Texture during the as Cast Structure Thermomechanical Treatment of Aluminum Alloys

Investigation of the Intermetallic Compounds Fragmentation Impact on the Formation of Texture during the as Cast Structure Thermomechanical Treatment of Aluminum Alloys

Influence of Mg Content on Texture Development during Hot Plain-Strain Deformation of Aluminum Alloys

Investigation into the density of polystyrene foam models when implementing the resource-saving fabrication technology of thin-wall aluminum sheet

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