Investigation of subgrain and fine intermetallic participles size impact on grain boundary mobility in aluminum alloys with transitional metal addition

Aryshenskii, Evgenii; Aryshenskii, Vladimir; Беглов, Э. Д.; Chitnaeva, Ekaterina; Konovalov, S. V.

doi:10.1016/j.matpr.2019.07.370

Cited by 6 publications

(12 citation statements)

References 14 publications

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“…It is important to consider deformation of the as-cast structure at the early stages and low values of the Zener-Hollomon parameter. The subgrains at such values of the Zener-Hollomon parameter are rather large and have the same size in all alloys, which can be clearly seen from Figure 17 using the data obtained in [19,35]. For plotting the well spread [40,41] in Figure 17, Equation 4 For 1565 and 5182 the following values of coefficients, namely m = 1, A = 0.0077, B = 0.0059, were taken from [19].…”

Section: Modeling the Texture Formation Processmentioning

confidence: 82%

“…At the same time, the data on the fragmentation of the intermetallic particles were introduced into the model (see Section 3.3). The data for the number of fine particles of the second phase, depending on the thermomechanical modes were taken from [19,35]. The results for 5182 alloy are shown in Figure 2.…”

Section: Experiments Descriptionmentioning

confidence: 99%

“…Hence, it is important to control PSN not only from the recrystallization point of view, but also from the point of view of obtaining a specific texture composition. PSN plays a special role in aluminum alloys with high magnesium content [17][18][19][20]. The latter reduces the stacking-fault energy by reducing the size of subgrains that belong to different elements of the microstructure (for example, cube oriented grains) [21] as compared to those that arise in particles of the minor phase.…”

Section: Introductionmentioning

confidence: 99%

“…The latter reduces the stacking-fault energy by reducing the size of subgrains that belong to different elements of the microstructure (for example, cube oriented grains) [21] as compared to those that arise in particles of the minor phase. This makes the PSN approach especially competitive in this type of alloys [19]. If the magnesium content is increased to 6%-together with higher manganese, silicon and iron contents-PSN begins to completely prevail over other mechanisms of nucleation under certain thermomechanical processing conditions [19], which is why the size and amount of the intermetallic particles must be controlled to successfully obtain the desired texture composition.…”

Section: Introductionmentioning

confidence: 99%

“…This makes the PSN approach especially competitive in this type of alloys [19]. If the magnesium content is increased to 6%-together with higher manganese, silicon and iron contents-PSN begins to completely prevail over other mechanisms of nucleation under certain thermomechanical processing conditions [19], which is why the size and amount of the intermetallic particles must be controlled to successfully obtain the desired texture composition.…”

Section: Introductionmentioning

confidence: 99%

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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: Modeling the Texture Formation Processmentioning

confidence: 82%

Section: Experiments Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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Effects of Zn Addition on Microstructural Evolution, Mechanical Properties, and Corrosion Resistance of Al‐6Mg Alloy Subjected to Equal Channel Angular Pressing Processing at 200 °C

et al. 2022

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Al-Mg series alloys have been widely used as structural materials in the automobile, electronic device, and shipbuilding industries due to their high specific strength, good heat dissipation, and formability. [1] Recently, the mechanical properties of Al-Mg alloys have been improved further through a combination strategy of increasing the solute Mg content, severe plastic deformation processing, and heat treatment, which can alleviate the contradiction between high strength and ductility. [2,3] For instance, Zha et al. processed an Al-7Mg alloy through equal channel angular pressing (ECAP) combined with interpass annealing, which simultaneously resulted in high strength (UTS % 507 MPa) and excellent ductility (uniform elongation > %11%). [4] In addition, because Mg has the solubility limit of %1 at% in Al matrix at room temperature, the β (Al 3 Mg 2 ) phase precipitates along grain boundaries (GBs) of Al-Mg alloys with high Mg content. [5][6][7] However, because the β phase has a higher active potential than the Al matrix in Al-Mg alloys, it acts as an anode, severely deteriorating the corrosion resistance. [8] Moreover, based on the previous experimental results of Al-Mg alloys, [9][10][11] the high Mg content and severe plastic deformation processing aided the β-phase precipitation, which deteriorated the corrosion performance and mechanical properties.Alloying, an effective method to improve the mechanical properties and corrosion resistance of Al-Mg alloys, has received extensive attention. For example, Gao et al. [12][13][14] clarified the combined effects of Al 6 Mn phases and Al 3 Sc dispersoids on microstructure evolution, strength enhancement, and outstanding ductility of the extruded Al-Mg alloys. In addition, several studies have been conducted to investigate the effect of additional alloying additions on the nucleation and growth of β-phase particles of Al-Mg alloys. [15][16][17] The effect of each alloying addition on β-phase evolution was different. In general, there are mainly two approaches to enhance the corrosion resistance of Al-Mg alloys by adding alloying elements. One approach is to suppress the nucleation of β phase. For instance, the Al-5.8Mg-0.4Mn

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Approach to oriented grain growth accounting during aluminum alloys recrystallization simulation

Aryshenskii

Беглов²,

Konovalov

et al. 2021

Materials Today: Proceedings

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Investigation of subgrain and fine intermetallic participles size impact on grain boundary mobility in aluminum alloys with transitional metal addition

Cited by 6 publications

References 14 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

Effects of Zn Addition on Microstructural Evolution, Mechanical Properties, and Corrosion Resistance of Al‐6Mg Alloy Subjected to Equal Channel Angular Pressing Processing at 200 °C

Approach to oriented grain growth accounting during aluminum alloys recrystallization simulation

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