Influence of indium trace addition on the microstructure and precipitation hardening response in Al–Si–Cu casting aluminum alloy

Akopyan, Т. К.; Белов, Н. А.; Letyagin, N. V.; Milovich, Filipp; Lukyanchuk, A. A.; Fortuna, A. S.

doi:10.1016/j.msea.2021.142329

Cited by 8 publications

(2 citation statements)

References 36 publications

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“…The addition of indium (In) to an Al-Si-Cu alloy resulted in a maximum hardness increase after aging, with a reduction of the time needed to achieve such hardness. Indium nanoparticles were present in an amount more than twice that of Al 2 Cu precipitates, with sizes significantly smaller as compared with those observed in the alloy without the element, meaning that In nanoparticles can act as heterogeneous nucleation sites [178]. In HPDC alloys, the combined additions of Mg and germanium (Ge) accelerated the aging response due to the formation of intermetallic phases [179].…”

Section: Other Transition Elementsmentioning

confidence: 99%

The Influence of Alloying Elements on the Microstructure and Properties of Al-Si-Based Casting Alloys: A Review

Callegari

Lima

Coelho

2023

Metals

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The excellent casting behavior and mechanical and corrosion properties of aluminum-silicon (Al-Si)-based alloys make them ideal for the manufacture of lightweight components with complex geometries. However, these properties depend directly on their microstructure, which, in its turn, is strongly affected by the composition of the alloy, among other factors. Several elements can be added to the material aiming to promote microstructural changes, e.g., grain refinement, optimization of phase morphology and distribution, and precipitation strengthening. Efforts are continuously put into such enhancements of cast Al alloys since they lead to quality improvements that allow for weight reduction and safety increase. Considering the technological relevance of the subject, this paper provides an overview of the research focused on the addition of alloying elements to these alloys, with a greater focus on Al-Si-based systems and the comprehension of the effects of these additions on their microstructure and properties.

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Section: Other Transition Elementsmentioning

confidence: 99%

The Influence of Alloying Elements on the Microstructure and Properties of Al-Si-Based Casting Alloys: A Review

Callegari

Lima

Coelho

2023

Metals

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“…Алюминиевые сплавы распространены и во многом незаменимы в авиационной и ракетнокосмической технике, поэтому проводится много исследований по разработке новых и совершенствованию существующих Al-сплавов [1][2][3][4][5][6].…”

Section: Introductionunclassified

Effect of hafnium on cast microstructure in alloy 1570

Zorin

Aryshenskii

Drits

et al. 2023

Izv.VUZ. Tsvet. Met.

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The issue is devoted to the study of the influence of hafnium on the structure and properties of alloy 1570. Ingots from alloy 1570 were cast into the steel coquille, including those with additives of hafnium 0.1, 0.2 and 0.5 %. To determine the size of the grain structure in the obtained ingots, an Axionovert-40 MAT optical microscope was used, chemical analysis of intermetallic particles was carried out using JEOL 6390A SEM. In addition, for the alloy 1570 and 1570–0.5Hf, the presence of nanoparticles with the L12 structure was studied using transmission electron microscope JEM-2100. Studies showed that hafnium additives make it possible to achieve a significant modification of the cast structure. For example, when introducing hafnium into the initial alloy in an amount of 0.5 % of the total weight, it was possible to achieve a reduction in the average grain size by 2 times. Scanning microscopy data showed that hafnium partially dissolves in particles containing scandium and zirconium as well. The addition of hafnium increases the number of large particles formed during crystallization. Transmission microscopy showed the presence of coherent aluminum matrix nanoparticles in alloy 1570 and having a superstructure of L12, which were most likely formed during intermittent decay during ingot cooling. When 0.5 % Hf was added, no nanoparticles with the L12 superstructure were detected. To explain the latter fact, it is necessary to study the surface of the liquidus of the Al–Hf–Sc system, as well as to study the effect of hafnium on the diffusion coefficient of scandium in aluminum.

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The role of Sn trace addition in the precipitation behavior and strengthening of the wrought Al–Cu–Mn-based alloy

et al. 2023

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Influence of indium trace addition on the microstructure and precipitation hardening response in Al–Si–Cu casting aluminum alloy

Cited by 8 publications

References 36 publications

The Influence of Alloying Elements on the Microstructure and Properties of Al-Si-Based Casting Alloys: A Review

The Influence of Alloying Elements on the Microstructure and Properties of Al-Si-Based Casting Alloys: A Review

Effect of hafnium on cast microstructure in alloy 1570

The role of Sn trace addition in the precipitation behavior and strengthening of the wrought Al–Cu–Mn-based alloy

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