Cellular/dendritic arrays and intermetallic phases affecting corrosion and mechanical resistances of an Al–Mg–Si alloy

Brito, Crystopher; Vida, Talita A.; Freitas, Emmanuelle S.; Cheung, Noé; Spinelli, José Eduardo; Garcia, Amauri

doi:10.1016/j.jallcom.2016.02.161

Cited by 68 publications

(27 citation statements)

References 36 publications

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“…Many authors have investigated corrosion resistance of Al-Mg-Si (6xxx series) [20][21][22][23][24][25][26][27][28] and Al-Si alloys [29][30][31][32][33][34][35]. Regarding Al-Mg-Si alloys, pitting and intergranular corrosions (IGC) have been reported as localized corrosion features [23,27].…”

Section: Introductionmentioning

confidence: 99%

Effect of Segregation and Surface Condition on Corrosion of Rheo-HPDC Al–Si Alloys

Eslami

Payandeh

Deflorian

et al. 2018

Metals

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Corrosion properties of two Al-Si alloys processed by Rheo-high pressure die cast (HPDC) method were examined using polarization and electrochemical impedance spectroscopy (EIS) techniques on as-cast and ground surfaces. The effects of the silicon content, transverse and longitudinal macrosegregation on the corrosion resistance of the alloys were determined. Microstructural studies revealed that samples from different positions contain different fractions of solid and liquid parts of the initial slurry. Electrochemical behavior of as-cast, ground surface, and bulk material was shown to be different due to the presence of a segregated skin layer and surface quality.

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Section: Introductionmentioning

confidence: 99%

Effect of Segregation and Surface Condition on Corrosion of Rheo-HPDC Al–Si Alloys

Eslami

Payandeh

Deflorian

et al. 2018

Metals

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“…It can be easily found that the P‐0.5GO/TC4 sample exhibits highest E corr which indicates that the optimal addition ratio of GO is around 0.5 wt%. And a larger value of I corr generally means lower corrosion resistance and faster corrosion rate . It can also be observed that the I corr of the P‐TC4 sample is higher than the other selected laser‐melted samples, which demonstrates that GO/TC4 nanocomposites provide more efficient corrosion resistance than pure TC4.…”

Section: Resultsmentioning

confidence: 84%

Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

Liu

et al. 2019

Materials & Corrosion

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To improve the corrosion resistance of Ti–6Al–4V (TC4) matrix, the influence on the corrosion behavior, microhardness, and microstructure of graphene oxide (GO)‐reinforced TC4 nanocomposites manufactured by selective laser melting was systematically investigated in this study. Microhardness tester, profilometer, X‐ray diffractometer, scanning electron microscopy, and electrochemical workstation were used to characterize the association between microhardness, pore microstructures, hard phases, and corrosion resistance of GO/TC4 nanocomposites. It can be observed that the incorporation of GO promotes the in situ formation of hard phases, such as TiC, TiO2, Al2O3, and so forth, and it also changes the microstructure of the matrix as well as increases its porosity. Nevertheless, GO/TC4 nanocomposites perform the best corrosion resistance when the mixing content of GO is 0.5 wt%, and its microhardness is greatly improved with the addition of GO. All experimental results suggest the efficacy of added GO.

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“…The coefficients of the equations were defined by the least squares method. Several authors 19,23,24,25,26 used this methodology. These authors also primarily use PDAS, not the secondary dendritic arm spacing (SDAS), in columnar structures.…”

Section: Resultsmentioning

confidence: 99%

An Experimental Study of the Solidification Thermal Parameters Influence upon Microstructure and Mechanical Properties of Al-Si-Cu Alloys

et al. 2018

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Metals solidification involves the transformation of the molten metal back into the solid state. Solidification structures impact heavily on the final product's characteristics. The microstructure effects on metallic alloys properties have been highlighted in various studies and particularly the dendrite arm spacing influence upon the mechanical properties such as tensile strength has been reported. In the present investigation, Al-10wt%Si-2wt%Cu and Al-10wt%Si-5wt%Cu alloys were directionally solidified upward under transient heat flow conditions. The experimental results include solidification thermal parameters such as tip growth rate and cooling rate, optical microscopy, volume fraction of the eutectic mixture, primary dendritic arm spacing and ultimate tensile strength. Experimental growth laws of primary dendrite arm spacing as a function of the solidification thermal parameters are proposed. The Hall-Petch mathematical expressions were used to correlate the ultimate tensile strength as a function of the primary dendritic arm spacing. It was found that the alloy with higher copper content had a more refined structure. More refined structures had higher ultimate tensile strength values.

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Cellular/dendritic arrays and intermetallic phases affecting corrosion and mechanical resistances of an Al–Mg–Si alloy

Cited by 68 publications

References 36 publications

Effect of Segregation and Surface Condition on Corrosion of Rheo-HPDC Al–Si Alloys

Effect of Segregation and Surface Condition on Corrosion of Rheo-HPDC Al–Si Alloys

Corrosion behavior of GO‐reinforced TC4 nanocomposites manufactured by selective laser melting

An Experimental Study of the Solidification Thermal Parameters Influence upon Microstructure and Mechanical Properties of Al-Si-Cu Alloys

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