Iron in Aluminium Alloys

Белов, Н. А.; Aksenov, A.A.; Eskin, Dmitry

doi:10.1201/9781482265019

Cited by 188 publications

(76 citation statements)

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“…Aluminum -iron intermetallics have been well studied, perhaps because iron is a major impurity element in aluminum. 27 Chiefly, the compound Fe 2 Al 5 forms adjacent to the ferrous substrate and FeAl 3 forms adjacent to the aluminum. 28,29 This formation is dominated by the diffusion of iron atoms into the liquid aluminum 26 and is affected by factors such as the presence of silicon in the aluminum 30 and carbon in the iron, 31 temperature, and interaction time between the aluminum and iron atoms.…”

Section: Resultsmentioning

confidence: 99%

Substrate Release Mechanisms for Gas Metal Arc Weld 3D Aluminum Metal Printing

Haselhuhn¹,

Gooding²,

Glover³

et al. 2014

3D Printing and Additive Manufacturing

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Limited material options, prohibitively expensive equipment, and high production costs currently limit the ability of small and medium enterprises to use 3D printing to prototype and manufacture metallic goods. A low-cost open-source 3D metal printer that utilizes gas metal arc welding technology has been developed that could make metal printing accessible to the average consumer. Unfortunately, this technology would demand access to expensive cutting tools for part removal from the substrate. This article investigates several substrate treatments to provide a low-cost method to easily remove 3D-printed 1100 aluminum parts from a reusable substrate. Coatings of aluminum oxide and boron nitride on 1100 aluminum and A36 low-carbon steel substrates were tested. Lap shear tests were performed to assess the interlayer adhesion between the printed metal part and the print substrate. No warping of the substrate was observed during printing. It was determined that boron nitride-coated lowcarbon steel provided the lowest adhesion strength. Printing aluminum on uncoated low-carbon steel also allowed easy removal of the aluminum part with the benefit of no additional coating steps or costs.

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Section: Resultsmentioning

confidence: 99%

Substrate Release Mechanisms for Gas Metal Arc Weld 3D Aluminum Metal Printing

Haselhuhn¹,

Gooding²,

Glover³

et al. 2014

3D Printing and Additive Manufacturing

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“…According to Belov's findings 17 In previous studies, a critical (minimum) cooling rate required for the Al m Fe phase formation was determined in some alloys. In AA1050 alloy (0.25wt% Fe, 0.13wt% Si, 0.03wt% Ti), the cooling rate is 8°C/s, as shown in Figure 2.11.…”

Section: Cooling Ratesmentioning

confidence: 99%

“…The backscattered electrons mode permits one to obtain the maximum phase contrast and to distinguish most of the phases present by their brightness. This facilitates the identification of the iron-containing phases, which are bright by contrast the aluminium matrix because the atom number of iron is bigger than that of aluminum 17 .…”

Section: Findings Found In Previous Researchesmentioning

confidence: 99%

Effect of trace elements V and Ni on Fe intermetallic phases formation and distribution in DC cast 5xxx series Al ingots /

Li¹

2012

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AA5657 alloy is one of the important members of 5xxx-series alloys. It has application in many fields as packing, electricity, architectural, and printing. These applications require high quality surface finishing, and the alloy ingots require homogeneous microstructure. In the industry of DC (direct-chill) casting of lxxx and 5xxx-series aluminium ingots, there exist different cooling rates from the casting surface to the ingot center. Thus, different Fe intermetallic phases such as AlmFe, A^Fe, a-AlFeSi and A^Fe can form preferentially in different positions of the ingot.The Fe intermetallic phase transition in DC casting ingot may cause microstructure inhomogeneities, which in turn cause the so called fir-tree zones (FTZs) in the ingots as well as streaks and bands on the Al sheets.Nowadays, with the increase of impurity in aluminium smelting raw materials (coke, alumina, etc.), the levels of trace elements present in the primary metal is gradually increasing. The impact of this increase on the aluminium transformation process and the final products is uncertain. Thus, there is a clear need to better understand these impacts, which will allow identifying ways to mitigate the negative impacts.The study presented in this thesis was performed on AA5657 alloys to study the

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“…[21] More complicated and expensive alloy systems such as AlFeCeCuXXX type alloys produced by melt spinning have been shown to achieve yield strengths in the range of 230-287MPa at 300°C. [22] Engineering stress vs. strain plots were generated to illustrate the effects of temperature and forging on the higher strength flake material and are shown in Figure 9. The data plotted shows a representative stress vs. strain curve for each condition.…”

Section: Mechanical Evaluation Of Consolidated and Extruded Flake Andmentioning

confidence: 99%

Microstructure and mechanical properties of a novel rapidly solidified, high-temperature Al-alloy

Overman

Mathaudhu

Choi

et al. 2016

Materials Characterization

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Rapid solidification (RS) processing, as a production method, offers a variety of unique properties based on far-from-equilibrium microstructures obtained through rapid cooling rates. In this study, we seek to investigate the microstructures and properties of a novel Al-alloy specifically designed for high temperature mechanical stability. Synthesis of, AlFe11.4Si1.8V1.6Mn0.9 (wt. %), was performed by two approaches: rotating cup atomization ("shot") and melt spinning ("flake"). These methods were chosen because of their ability to produce alloys with tailored microstructures due to their inherent differences in cooling rate. The as-solidified precursor materials were microstructurally characterized with electron microscopy. The results show that the higher cooling rate flake material exhibited the formation of nanocrystalline regions as well additional phase morphologies not seen in the shot material. Secondary dendritic branching in the flake material was on the order of 0.1-0.25µm whereas branching in the shot material was 0.5-1.0µm. Consolidated and extruded material from both precursor materials was mechanically evaluated at both ambient and high (300°C) temperature. The consolidated RS flake material is shown to exhibit higher strengths than the shot material. The ultimate tensile strength of the melt spun flake was reported as 544.2MPa at room temperature and 298.0MPa at 300°C. These results forecast the ability to design alloys and processing approaches with unique non-equilibrium microstructures with robust mechanical properties at elevated temperatures.

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Iron in Aluminium Alloys

Cited by 188 publications

References 0 publications

Substrate Release Mechanisms for Gas Metal Arc Weld 3D Aluminum Metal Printing

Substrate Release Mechanisms for Gas Metal Arc Weld 3D Aluminum Metal Printing

Effect of trace elements V and Ni on Fe intermetallic phases formation and distribution in DC cast 5xxx series Al ingots /

Microstructure and mechanical properties of a novel rapidly solidified, high-temperature Al-alloy

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