Characterization of Structure and Properties of As-cast AlCuMg Alloys

Zlatičanin, Biljana; Radonjic, B.; Filipovic, Mirjana

doi:10.2320/matertrans.45.440

Cited by 11 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Given the strategic importance of the aforementioned alloys, efforts have been made on the development of mathematical models to preview the microstructure of these multicomponent alloys [6]. Currently, a number of technical compositions have already been standardized; however, new alloys based on the Al-Cu [7] and Al-Cu-Mg [8] systems have been considered and developed. Generally, Al-Cu-(Mg) alloys are used in four different conditions: as-cast, heat treated after casting, mechanically worked after casting, or worked and heat treated.…”

Section: Introductionmentioning

confidence: 99%

Horizontally Solidified Al–3 wt%Cu–(0.5 wt%Mg) Alloys: Tailoring Thermal Parameters, Microstructure, Microhardness, and Corrosion Behavior

Barros

Cruz

Silva

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

In the present experimental investigation, Al-3 wt%Cu and Al-3 wt%Cu-0.5 wt%Mg alloys castings are produced by a horizontal solidification technique with a view to examining the interrelationship among growth rate (G R ), cooling rate (C R ), secondary dendrite arm spacing (k 2 ), Vickers microhardness (HV), and corrosion behavior in a 0.5 M NaCl solution. The intermetallic phases of the as-solidified microstructures, that is, h-Al 2 Cu, S-Al 2 CuMg, and x-Al 7 Cu 2 Fe, are subjected to a comprehensive characterization by using calculations provided by computational thermodynamics software, optical microscopy, and scanning electron microscopy/energy-dispersive spectroscopy. Moreover, electrochemical impedance spectroscopy and potentiodynamic polarization tests have been applied to analyze the corrosion performance of samples of both alloys castings. Hall-Petch-type equations are proposed to represent the HV dependence on k 2 . It is shown that the addition of Mg to the Al-Cu alloy has led to a considerable increase in HV; however, the Al-Cu binary alloy is shown to have lower corrosion current density (i corr ) as well as higher polarization resistance as compared to the corresponding results of the Al-Cu-Mg ternary alloy.

show abstract

Section: Introductionmentioning

confidence: 99%

Horizontally Solidified Al–3 wt%Cu–(0.5 wt%Mg) Alloys: Tailoring Thermal Parameters, Microstructure, Microhardness, and Corrosion Behavior

Barros

Cruz

Silva

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

show abstract

“…The microstructures of the base metals (BMs) formed by the dendritic structure of the α-Al solid solution and Al 2 Cu eutectic mixture in the inter-dendritic regions exhibit a net-like feature. In addition, the different copper content led to the different microstructure formation in the BMs [2]. The average grain sizes of Al-8%Cu BM and Al-2%Cu BM were about 82 and 108 mm, respectively.…”

Section: Resultsmentioning

confidence: 96%

Evaluation of the Influence of Upset Stage on Joint Properties of Friction Welded Dissimilar Aluminum-Copper Cast Alloys

Barlas

Çolak

2014

SV-JME

View full text Add to dashboard Cite

Friction welding was applied to dissimilar aluminum cast bars alloyed with 2 and 8% copper and the effects of upset time on joint properties were evaluated in this study. The welding process was carried out by a vertical milling machine. Tensile test results show that the ultimate tensile strength increased with an increase in upset time and it reached 88% for Al-2%Cu and 74% for Al-8%Cu base metals. The heat affected zone, thermo-mechanical affected zone, and weld metal were detected in this joint by optical examination, in addition to the base metals. A peak temperature of 436 °C was measured in the weld zone. Hardness values also varied according to microstructural changes. The highest hardness values were detected in the weld metal and its average hardness was 217 Brinell.

show abstract

“…They have significant correlation to the material microstructure. 1) Recently, die casting using semi-solid aluminum alloy slurry is drawing attention due to its outstanding performance, 2) and AlSi hypoeutectic alloys are commonly used in the process. Generally, primary ¡-Al phase is the primitive phase that emerges in the solidification process.…”

Section: Introductionmentioning

confidence: 99%

Primary Al Grain Size Measurement of Al–Si Hypo-Eutectic Alloy Using Mathematical Morphology Algorithms

Xu¹,

Hirata²,

Anzai³

2018

Mater. Trans.

View full text Add to dashboard Cite

Homogeneous distribution of primary Al phase grain (hereafter, primary Al grain) size in an AlSi alloy casting is desirable. Traditional image processing techniques found difficulties in making proper image segmentation for the individual primary Al grains. Recently, a new image processing technique, mathematical morphology, is paid attention to because of its capability for a flexible image processing. In this paper, an image processing method based on mathematical morphology algorithms was proposed for the appropriate image segmentation and measurement of primary Al grain size in aluminum alloys. Opening algorithm was applied to identify primary Al grains and Watershed transformation (WST) using Euclidean distance map (EDM) as marker-image was used to separate individual primary Al grains. Finally, a second implementation of WST was used to classify the isolated small primary Al grains that had not been individually identified in the first time WST. The results showed that the proposed method appropriately identified primary Al grains with enough quality to evaluate the size distribution. The quality of primary Al grain size measurement result was as high as human operations. Meanwhile, the proposed method also was more efficient than the subjective measurement by hands.

show abstract

Characterization of Structure and Properties of As-cast AlCuMg Alloys

Cited by 11 publications

References 6 publications

Horizontally Solidified Al–3 wt%Cu–(0.5 wt%Mg) Alloys: Tailoring Thermal Parameters, Microstructure, Microhardness, and Corrosion Behavior

Horizontally Solidified Al–3 wt%Cu–(0.5 wt%Mg) Alloys: Tailoring Thermal Parameters, Microstructure, Microhardness, and Corrosion Behavior

Evaluation of the Influence of Upset Stage on Joint Properties of Friction Welded Dissimilar Aluminum-Copper Cast Alloys

Primary Al Grain Size Measurement of Al–Si Hypo-Eutectic Alloy Using Mathematical Morphology Algorithms

Contact Info

Product

Resources

About