The Comparison of the Microstructure and Corrosion Resistance of Sand Cast Aluminum Alloys

Dobkowska, Anna; Adamczyk‐Cieślak, Bogusława; Mizera, J.; Kurzydłowski, K. J.; Kiełbus, A.

doi:10.1515/amm-2016-0038

Cited by 20 publications

(12 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, they may behave differently depending on the material investigated. Based on the literature data for aluminum and its alloys for example, [2][3][4][5][6] it can be concluded that two microstructural features have the most significant impact on corrosion behavior: grain size and second-phase/ intermetallic particles.…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructural features on the corrosion behavior of severely deformed Al–Mg–Si alloy

Orłowska

Ura‐Bińczyk

Olejnik

et al. 2020

Materials & Corrosion

View full text Add to dashboard Cite

The aim of this study was to determine the influence of severe plastic deformation processing and the changes in microstructure resulting therefrom on the corrosion resistance of an Al–Mg–Si alloy. The alloy was processed using incremental equal channel angular pressing, which caused a reduction in grain size from 15 to 0.9 µm. The grain refinement was accompanied by an increase in the number of grain boundaries and dislocations, and by changes in grain orientation. However, there was no change in the size and number of intermetallic particles, which presumably resulted in a constant number of galvanic couplings. Electrochemical experiments revealed only slight differences between the samples before and after processing. Higher potential transients/oscillations upon immersion and increased corrosion currents in the vicinity of corrosion potential point to slightly higher reactivity of the most refined material. This indicates that intermetallic particles are the most crucial microstructural elements in terms of corrosion resistance. Their impact exceeds that of grain boundaries, in particular, at the stage of corrosion initiation. The development of corrosion attack is controlled more by the microstructure of the matrix as the grain refinement resulted in a less pronounced corrosion attack in comparison with the coarse‐grained sample.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of microstructural features on the corrosion behavior of severely deformed Al–Mg–Si alloy

Orłowska

Ura‐Bińczyk

Olejnik

et al. 2020

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…Dobkowska et al [4] reported the influence of the formation of intermetallic compounds of AlFeSi, AlMnFeSi, and AlMgFeSi on the corrosion resistance of AlSi5, AlSi7Mg, and AlSi10Mg. The measured corrosion densities were significantly lower than those obtained by other authors using similar alloys (Table S2).…”

Section: Corrosion Resistance Of Cast Aluminum Alloys Obtained By Gramentioning

confidence: 99%

“…SEM micrographs and EDS analysis performed in (a) AlSi7Mg and (b) AlSi10Mg, respectively. Reprinted with permission of[4].…”

mentioning

confidence: 99%

Corrosion of Cast Aluminum Alloys: A Review

Labari

Biezma

Rivero

2020

Metals

View full text Add to dashboard Cite

Research on corrosion resistance of cast aluminum alloys is reviewed in this article. The effect of the main microstructural features of cast aluminum alloys such as secondary dendrite arm spacing (SDAS), eutectic silicon morphology, grain size, macrosegregation, microsegregation, and intermetallic compounds is discussed. Moreover, the corrosion resistance of cast aluminum alloys obtained by modern manufacturing processes such as semi-solid and additive manufacturing are analyzed. Finally, the protective effects provided by different coatings on the aluminum cast alloys—such as anodized, plasma electrolytic oxidation (PEO), and laser—is reviewed. Some conclusions and future guidelines for future works are proposed.

show abstract

“…Therefore, mechanical properties of Al-Si alloys have also been extensively investigated. By contrast, the corrosion resistance of Al-Si alloys is not sufficiently researched [18][19][20][21][22][23][24][25]. Silicon, as a major alloying element in aluminium alloys, is primarily responsible for good castability, low density (2.34 g cm -3 ), and reduction of thermal expansion coefficient.…”

Section: Introductionmentioning

confidence: 99%

Corrosion investigations of Al-Si casting alloys in 0.6 M NaCl solution

et al. 2021

View full text Add to dashboard Cite

This paper presents results of the corrosion investigations of specimens made from finished parts for the automotive industry, produced by high-pressure die casting and gravity die casting process of six Al-Si alloys (40000 series). Open circuit potential and potentiodynamic polarization measurements have been performed using a potentiostat with three-electrode set-up in 0.6 M NaCl naturally aerated solution. Microstructural characterization before and after electrochemical investigations has been carried out with optical microscope to establish the connection between microstructure and corrosion parameters of investigated alloys and to analyze and record surface changes of each sample due to electrochemical corrosion. All alloys show good corrosion resistance, which manifests with low values of corrosion rates, calculated from the corrosion current densities obtained from potentiodynamic polarization measurements. Differences in electrochemical behavior appear due to the distinctions in their chemical composition and microstructure. The type of casting process does not affect electrochemical behavior of Al-Si alloys.

show abstract

The Comparison of the Microstructure and Corrosion Resistance of Sand Cast Aluminum Alloys

Cited by 20 publications

References 10 publications

Effect of microstructural features on the corrosion behavior of severely deformed Al–Mg–Si alloy

Effect of microstructural features on the corrosion behavior of severely deformed Al–Mg–Si alloy

Corrosion of Cast Aluminum Alloys: A Review

Corrosion investigations of Al-Si casting alloys in 0.6 M NaCl solution

Contact Info

Product

Resources

About