Ex Situ Introduction and Distribution of Nonmetallic Particles in Aluminum Melt: Modeling and Experiment

Vorozhtsov, S. A.; Minkov, L.; Dammer, Vladislav; Khrustalyov, Anton; Zhukov, Ilya; Promakhov, Vladimir; Vorozhtsov, Alexander; Khmeleva, Marina

doi:10.1007/s11837-017-2594-1

Cited by 20 publications

(15 citation statements)

References 4 publications

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“…To obtain alloy we used pure aluminum (99.5%). The introduction of the SHS-obtained materials into the aluminum melt was carried out at 750 °C in a mechanical mixer [9] prior to stirring for 30 s, followed by pouring into a steel chill mold. The amount of added SHS material in aluminum was 0.2 wt.%.…”

Section: Methodsmentioning

confidence: 99%

Al-Ti-B₄C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

et al. 2018

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The paper presents microstructure, composition, and burning rate of Al alloy produced by high-temperature synthesis (SHS) from powder mixture Al-Ti-B4C with different concentration of Al powder. It has been established that the phase composition of materials obtained at gas-free combustion includes TiB2, Al, and TiC. It is shown that Al content growth powder in initial Al-Ti- B4C mixture from 7.5 to 40 wt.% reduces the burning rate of the powder from 9*10-3 to 1.8*10-3 m/s. For the system consisting of 60 wt.% of (Ti + B4C) and 40 wt.% of Al there is the increase in the porosity of the compacted initial powder mixture from 30 to 51 and reduction in the burning rate from 1.8 * 10-3 to 1 * 10-3 m/s. The introduction of 0.2 wt.% of the obtained SHS materials into the melt of pure aluminum causes reduction of the grain size of the resulting alloy from 1200 to 410 μm.

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Section: Methodsmentioning

confidence: 99%

Al-Ti-B₄C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

et al. 2018

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“…Nanosized Al 2 O 3 particles and SHS master alloys were injected using a mechanical mixer. A description of the mechanical mixer and the method of particle injection into the melt are provided in Reference [13]. The melt temperature when the alloy was poured into the crystallizer was 720 • C, and the amount of injected TiB 2 , TiB 2 /TiC, and Al 2 O 3 particles were 0.1 wt.%.…”

Section: Obtaining the Alloysmentioning

confidence: 99%

“…An alternative approach to increasing the mechanical properties of aluminum alloys lies in the ex situ introduction of a small amount (up to 0.1-0.2 wt.%) of nano-and micro-size neutral hard-melting particles, such as Al 2 O 3 , TiB 2 and SiC. This allows for a significant increase in the mechanical properties of aluminum alloys, including hardness, yield strength, tensile strength, and plasticity [12][13][14]. This is because when ceramic particles are introduced into the melt, they become crystallization centers and lead to the formation of a fine-grain structure of ingots.…”

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The Impact of Particle Reinforcement with Al2O3, TiB2, and TiC and Severe Plastic Deformation Treatment on the Combination of Strength and Electrical Conductivity of Pure Aluminum

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Khrustalyov

et al. 2019

Metals

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It has been found that a high electrical conductivity of 63.1%, the International Annealed Copper Standard (IACS), and high mechanical properties are achieved by the initial aluminum alloy after undergoing four cycles of the severe plastic deformation (SPD) process. It has been found that when TiB2 particles are introduced into aluminum and the samples are subject to SPD, the mechanical characteristics of the aluminum alloy are improved. Microhardness (HV) increases from 329 to 665 MPa, yield strength (YS) increases from 38 to 103 MPa, and ultimate tensile strength (UTS) increases from 73 to 165 MPa while maintaining the initial electrical conductivity of cast aluminum without reinforcing particles (53.9–54.1% IACS).

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“…The application of hardening non-metallic particles is an urgent issue for improving the cast alloy structure due to the grinding of structural components (α-Al solid solution, α-Al+Si eutectic phases). At present, there are quite a number of experimental data on the use of metal oxides (Al 2 O 3 , TiO 2 ), carbides and borides for modification of the Al-Si alloy grain structure [9][10][11][12][13]. Carbon nanomaterials (carbon nanotubes, fullerene and shungite carbon) are also widely used for the grain structure refinement and the improvement of mechanical properties for aluminum alloys [14][15].…”

Section: Introductionmentioning

confidence: 99%

Structure and mechanical properties of A356-C alloys

2018

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The paper deals with influence of mechanical mixing and vibration treatment on the structure and mechanical characteristics of the aluminum alloy containing ≤ 1 wt.% of nanodiamonds (A356-C). The alloy was obtained from industrial A356 Al-Si casting alloy by means of an integrated effect of mechanical mixing and vibration. It has been shown that the introduction of nanodiamond particles contributes to improving the alloy structure and increasing its mechanical tensile properties. The structure of the A356 aluminum alloy has been refined with introduction of 0.2 wt% nanodiamonds and application of vibration melt treatment. The introduction of nanodiamonds into the melt and the vibration melt treatment enable one to increase the yield strength and tensile strength of the A356 aluminum alloy without any change in ductility.

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Ex Situ Introduction and Distribution of Nonmetallic Particles in Aluminum Melt: Modeling and Experiment

Cited by 20 publications

References 4 publications

Al-Ti-B₄C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

Al-Ti-B₄C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

The Impact of Particle Reinforcement with Al2O3, TiB2, and TiC and Severe Plastic Deformation Treatment on the Combination of Strength and Electrical Conductivity of Pure Aluminum

Structure and mechanical properties of A356-C alloys

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Ex Situ Introduction and Distribution of Nonmetallic Particles in Aluminum Melt: Modeling and Experiment

Cited by 20 publications

References 4 publications

Al-Ti-B4C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

Al-Ti-B4C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

The Impact of Particle Reinforcement with Al2O3, TiB2, and TiC and Severe Plastic Deformation Treatment on the Combination of Strength and Electrical Conductivity of Pure Aluminum

Structure and mechanical properties of A356-C alloys

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Al-Ti-B₄C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum

Al-Ti-B₄C materials obtained by high-temperature synthesis and used as a master-alloy for aluminum