Microstructure Examination of Electromagnetic Casting 2024 Aluminum Alloy Ingots

Patarić, Aleksandra; Gulisija, Zvonko; Marković, S.

doi:10.3139/147.100346

Cited by 3 publications

(3 citation statements)

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“…21,22) When the microstructure is more uniform, consequently the mechanical properties are better. Our previous research shows 23,24) that electromagnetic casting has advantages over the conventional casting because the solidification process is changed.…”

Section: Resultsmentioning

confidence: 99%

Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process

et al. 2015

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In this study the mechanical properties (reduction of area, S 0 , tensile strength, R m , yield strength, R p , and elongation, A) of EN AW 7075 aluminum alloy obtained by electromagnetic casting were investigated at different operating parameters: frequency (V), field strength (T) and current intensity (I). The predictive mathematical models using Response Surface Methodology, with second order polynomial (SOP) regression models, and Artificial Neural Network model (ANN), were afterwards compared to obtained experimental results. Analysis of variance and posthoc Tukey's HSD test at 95% confidence limit ("honestly significant differences") have been utilised to show significant differences between various samples. SOP models showed good prediction capabilities, with high coefficients of determination (r 2 ), 0.5310.977, while ANN model performed even better prediction accuracy: 0.8000.992. The optimal samples were chosen depending on mechanical properties of the product (S 0 = 50.49 mm 2 , R m = 405.75 N mm ¹2, R p = 302.49 N mm ¹2, A = 6.86%), using optimal operating parameters (V = 30 Hz, I = 250 A, T = 18 © 10

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Section: Resultsmentioning

confidence: 99%

Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process

et al. 2015

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“…The casting temperature was set to 720 o C. The experimental EMF frequency was set to 0, 20 and 30 Hz. This is chosen according to previous research [20], where it was shown that frequencies higher than 30 Hz do not improve properties of aluminum alloys. The current intensity was 200 A.…”

Section: Sample Castingmentioning

confidence: 99%

“…In the present work, we have studied the effects of casting with the EMF application on the microstructure of the EN AW 7075 aluminum alloy. There are clear indicators in the published research that some technological operations, including machining and long-term heat treatment can be avoided [20,21]. In this way, great savings in energy and production time can make this process superb.…”

Section: Introductionmentioning

confidence: 99%

Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process

Patarić

Mihailović

Marković

et al. 2021

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Microstructure assessment is crucial for the design and production of high-quality alloys such as cast aluminum alloy ingots. Along with the effect of a more homogeneous microstructure to result in much better mechanical properties, better as-cast alloy quality indicates a higher efficiency of the aluminum alloys production process. During the aluminum alloy solidification process many microstructural defects can occur, which deteriorate the mechanical properties and hence decrease the usability of such an ingot. Application of the electromagnetic field during the vertical continuous casting process significantly reduces occurrence of these defects. In the present study, EN AW 7075 alloy samples were cast with and without application of an electromagnetic field and examined regarding the microstructure, electrical conductivity, and changes in the phase composition. The obtained results clearly show that it is possible to decrease or avoid casting defects by the electromagnetic field application as verified by the microstructure characterization and quantification, electrical conductivity tests and differential thermal analysis (DTA).

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Quantitative metallographic assessment of the electromagnetic casting influence on the microstructure of 7075 Al alloy

2011

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Microstructure Examination of Electromagnetic Casting 2024 Aluminum Alloy Ingots

Cited by 3 publications

References 1 publication

Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process

Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process

Microstructure as an essential aspect of EN AW 7075 aluminum alloy quality influenced by electromagnetic field during continuous casting process

Quantitative metallographic assessment of the electromagnetic casting influence on the microstructure of 7075 Al alloy

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