Production Technology Features for Aluminum Matrix Alloys with a Silicon Carbide Framework

Bazhin, V. Yu.; Gutema, Endalkachew Mosisa; Savchenkov, S. А.

doi:10.1007/s11015-017-0439-3

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…NiAl is relatively easily processed. The main disadvantages of pure NiAl are low toughness and resistance to damage at room temperature, as well as low strength and creep with increasing temperature [11,12]. Despite these shortcomings, research and applications of nickel aluminide are successful.…”

Section: Methodsmentioning

confidence: 99%

Discrete Element Simulation of Powder Sintering for Spherical Particles

Белоглазов

Бойков

Петров

2020

KEM

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This paper presents a numerical simulation of powder sintering. The numerical model presented in this paper uses the discrete element method, which suggests that the material can be modeled by a large set of discrete elements (particles) of a spherical shape that interact with each other. A methodology has been developed to determine the DEM parameters of bulk materials based on machine vision and a neural network algorithm. The approach is suitable for obtaining the exact values of the DEM parameters of the investigated bulk material by comparing the visual images of the material’s behavior at the experimental stand in reality and in the model. Simulation of sintering requires an introduction of cohesive interaction between particles representing interparticle sintering forces. Numerical sintering studies were supplemented with experimental studies that provided data for calibration and model validation. The experimental results have shown a significant capability of the designed numerical model in modeling sintering processes. Evolution of microstructure and density during sintering have been studied under the laboratory conditions.

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Section: Methodsmentioning

confidence: 99%

Discrete Element Simulation of Powder Sintering for Spherical Particles

Белоглазов

Бойков

Петров

2020

KEM

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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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“…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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Production Technology Features for Aluminum Matrix Alloys with a Silicon Carbide Framework

Cited by 8 publications

References 13 publications

Discrete Element Simulation of Powder Sintering for Spherical Particles

Discrete Element Simulation of Powder Sintering for Spherical Particles

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

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