Effect of Calcium Additives on the Phase Composition and Physicomechanical Properties of a Conductive Alloy Al–0.5% Fe–0.2% Si–0.2% Zr–0.1% Sc

Короткова, Н. О.; Белов, Н. А.; Avxentieva, N. N.; Aksenov, A. A.

doi:10.1134/s0031918x20010093

Cited by 6 publications

(7 citation statements)

References 10 publications

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“…Hence, we find it expedient to consider the Al-Ca-Zr-Fe-Si system as the base one. According to our earlier results [5,22,[24][25][26], the target structure can be achieved in the alloy containing~1% Ca, 0.5% Zr, 0.5% Fe, 0.25% Si (wt.%). Based on above, the goal of the present work is to study the structure, mechanical properties and electrical conductivity of the aluminum wire alloy of the foregoing composition manufactured by direct cold drawing from an as-cast 12 mm circular cross-section EMC rod and subjected to various heat treatment routes.…”

Section: Introductionmentioning

confidence: 80%

“…Earlier [26], the structure of this phase diagram in the range of Al-Ca alloys (concentration of Ca much higher than Fe and Si) was reviewed but other fields (with small Ca content) were not studied. Using the calculation in the Thermo-Calc software [31], as well as the results of previously published works [22,[24][25][26]30,32] and additional experiments, we proposed structures of the Al-Ca-Fe-Si system in the aluminum corner including distribution of phases in the solid state…”

Section: Discussionmentioning

confidence: 99%

“…In addition to Fe and Si used, subsequent development can be considered in alloying by rare-earth metal (REM) [21,23] and calcium [24,25]. They are both recognized to be very efficient for improving the heat resistance of Al alloys.…”

Section: Introductionmentioning

confidence: 99%

“…This is due to its structure combining an Al matrix strengthened by Al 3 (Zr,Sc)-L1 2 phase particles and uniformly distributed submicron particles of Ca-bearing phases. Simulation of DC casting and flat rolling for the Al-0.5% Ca-0.5% Fe-0.25% Si-0.2% Zr-0.1% Sc alloy also showed the possibility for achieving such a combination of basic characteristics [25]. In respect to the foregoing compositions, scandium alloying may bring excessive costs of products.…”

Section: Introductionmentioning

confidence: 99%

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Structure and Properties of Ca and Zr Containing Heat Resistant Wire Aluminum Alloy Manufactured by Electromagnetic Casting

Белов

Akopyan

Короткова

et al. 2021

Metals

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Experimental aluminum alloy containing 0.8% Ca, 0.5% Zr, 0.5% Fe and 0.25% Si (wt.%), in the form of a long-length rod 12 mm in diameter was manufactured using an electromagnetic casting (EMC) technique. The extremely high cooling rate during alloy solidification (≈104 K/s) caused the formation of a favorable microstructure in the ingot characterized by a small size of the dendritic cells, fine eutectic particles of Ca-containing phases and full dissolution of Zr in Al the solid solution. Due to the microstructure obtained the ingots possess high manufacturability during cold forming (both drawing and rolling). Analysis of the electrical conductivity (EC) and microhardness of the cold rolled strip and cold drawn wire revealed that their temperature dependences are very close. The best combination of hardness and EC in the cold rolled strip was reached after annealing at 450 °C. TEM study of structure evolution revealed that the annealing mode used leads to the formation of L12 type Al3Zr phase precipitates with an average diameter of 10 nm and a high number density. Experimental wire alloy has the best combination of ultimate tensile strength (UTS), electrical conductivity (EC) (200 MPa and 54.8% IACS, respectively) and thermal stability (up to 450 °C) as compared with alloys based on the Al–Zr and Al– rare-earth metal (REM) systems. In addition, it is shown that the presence of calcium in the model alloy increases the electrical conductivity after cold forming operations (both drawing and rolling).

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Section: Introductionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure and Properties of Ca and Zr Containing Heat Resistant Wire Aluminum Alloy Manufactured by Electromagnetic Casting

Белов

Akopyan

Короткова

et al. 2021

Metals

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“…Design of new alloy systems that are compatible with the high impurities in the aluminum scraps is in urgent need [6,23]. Beyond the conventional aluminum alloy series, the Al-Ca alloys are found to have good castability and mechanical forming ability with unique properties [24][25][26][27][28]. Ca has a low density, and it is abundantly available.…”

Section: Introductionmentioning

confidence: 99%

Convert Harm into Benefit: The Role of the Al10CaFe2 Phase in Al-Ca Wrought Aluminum Alloys Having High Compatibility with Fe

Shen,

Zhang,

Liu

et al. 2023

Materials

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The compatibility of the wrought Al-Ca alloy with the element Fe was investigated in the present study. In this work, both the Al-Ca alloy and Al-Ca-Fe alloy were synthesized through melting, casting, heat treatment, and rolling. A new ternary Al-Ca-Fe eutectic phase, identified as Al10CaFe2 with an orthorhombic structure, demonstrated enhanced performance, as revealed by nanoindentation tests. Combining the results of the nanoindentation and EBSD, it can be inferred that during the rolling and heat treatment process, the divorced eutectic phases were broken and spheroidized, and the structure of the Fe-rich alloy became finer, which promotes the formation of fine grains during the process of dynamic recrystallization and effectively hindered the grain growth during thermal treatment. Consequently, the strength of the as-rolled Al-Ca alloy was improved with the addition of 1 wt.% Fe while the ductility of the alloy was maintained. Therefore, adding Ca into the high-Fe content recycled aluminum altered the form of the Fe-containing phases in the alloy, effectively expanding the application scope of recycled aluminum alloy manufacturing. This approach also offered a method for strengthening the Al-Ca aluminum alloys. Compared to the traditional approach of reducing Fe content in alloys through metallurgical means, this study opened a new avenue for designing novel, renewable aluminum alloys highly compatible with impurity iron in scrap.

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Structure and Properties of the Al–1% Ca–0.5% Fe–0.25% Si–0.5% Zr Alloy Produced via Casting in an Electromagnetic Crystallizer

Короткова

Cherkasov

Тимофеев

et al. 2021

Phys. Metals Metallogr.

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Effect of Calcium Additives on the Phase Composition and Physicomechanical Properties of a Conductive Alloy Al–0.5% Fe–0.2% Si–0.2% Zr–0.1% Sc

Cited by 6 publications

References 10 publications

Structure and Properties of Ca and Zr Containing Heat Resistant Wire Aluminum Alloy Manufactured by Electromagnetic Casting

Structure and Properties of Ca and Zr Containing Heat Resistant Wire Aluminum Alloy Manufactured by Electromagnetic Casting

Convert Harm into Benefit: The Role of the Al10CaFe2 Phase in Al-Ca Wrought Aluminum Alloys Having High Compatibility with Fe

Structure and Properties of the Al–1% Ca–0.5% Fe–0.25% Si–0.5% Zr Alloy Produced via Casting in an Electromagnetic Crystallizer

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