Effect of Scandium Doping on The Corrosion Resistance and Mechanical Behavior of Al-3Mg Alloy in Neutral Chloride Solutions

Ahmad, Zaki; Aleem, Abdul Aleem B.; Abbas, Mohammad

doi:10.4236/msa.2011.24031

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…Addition of Sc to Al alloys results in formation of coherent strengthening particles and acts as a potential grain refiner. The Sc efficiently combines with Al and forms Al3Sc precipitate which can significantly improve the strength [9][10]. Similar result was documented recently for Erbium alloying, a grain refiner from the works of Y.…”

Section: Introductionsupporting

confidence: 67%

Microstructure and Mechanical Behavior of Sc Doped Filler Rod in TIG Welding Dissimilar Al Mg Alloys

D.¹,

Subbaiah²

2021

JNMES

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The present work reports about the effect of cast scandium doped ER5356 filler rod in Tungsten Inert Gas welding of dissimilar Aluminium Magnesium alloys. The grain refinement effect on weld microstructure by transition metal scandium was investigated with optical and scanning electron microscope. Additionally, XRD analysis, tensile strength (global and component joint) and microhardness were tested on weld samples. The microstructural examination in weld fusion zone observed fine grain size and suppressed dendrite arm spacing. The formation of Al3Sc precipitate in weld fusion zone due to scandium inclusion in filler was identified and resulted in improving the weld strength significantly. The higher joint efficiency of 92.5% was achieved in the global joint of weld samples. The failure location of global joint tensile samples identified the weld fusion zone is stronger than AA5052 base material. Further weld strength was evaluated with component joint by micro tensile test, which results in 70MPa enhancement in UTS values and validating the accurate weld strength. However, the elongation of the tensile test sample reduced marginally for the weld. The fracture mechanism of the weld joint observes decrease in ductility. The significant increase in hardness of the weld fusion zone was evident due to doping of scandium compared to the other zones of the weld.

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Section: Introductionsupporting

confidence: 67%

Microstructure and Mechanical Behavior of Sc Doped Filler Rod in TIG Welding Dissimilar Al Mg Alloys

D.¹,

Subbaiah²

2021

JNMES

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“…A strong tendency of pinning of grain boundaries was observed. This shows how the grain size and nano-precipitates affect the passivation behavior of Al-Sc-Mg alloys [32,33].…”

Section: Introductionmentioning

confidence: 87%

“…Some advanced work showed that reaction of the substrate by myristic acid and perfluorosilane enhance the corrosion resistance three-fold as compared to untreated samples [32,93].…”

Section: Effect Of Hydrophobic Surface On the Corrosion Resistance Ofmentioning

confidence: 99%

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Hydrophobicity — A Green Technique for Enhancing Corrosion Resistance of Alloys

Ahmad¹,

Khan²,

Farooq³

et al. 2015

New Trends in Alloy Development, Characterization and Application

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The corrosion phenomenon is as old as the age of the planet. The cost of corrosion has risen alarmingly with industrial progress and it is estimated to be around 300 billion dollars or 3 to 4.5% of the GNP of developed nations. Thousands of alloys have been developed to control corrosion, which is a major consideration in the development of new ferrous and non-ferrous alloys. Several corrosion control techniques such as inhibitor treatment, coatings, cathodic protection, alloying additions, and designing for corrosion protection have been developed to combat corrosion. Despite their merits, techniques such as inhibition treatment and coatings are limited by their adverse effect on the environment because of their volatile organic components. Due to an increasingly alarming carbon footprint, there is a growing global concern to keep the environment clean. Hence, a great need exists to replace the current control methods by ecofriendly methods. The potential of the green technology of hydrophobicity has therefore been exploited to control corrosion by fabricating hydrophobic surfaces on alloys and these surfaces have shown highly promising results. This technology offers a novel method to control corrosion of metals, alloys, polymers and composites.

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“…However, the effect of Sc addition on the corrosion behavior of Al alloy is in confusion. Most of works on the corrosion properties of Sc-containing alloys elaborate that Sc has a beneficial effect on corrosion resistance caused by the formation of Sc 2 O 3 on the alloy surface [9][10][11][12]. Large Al 3 Sc phase have been found having lower oxidation rate than the other intermetallic compounds and nobler than pure Al.…”

Section: Introductionmentioning

confidence: 99%

Effects of Scandium on Corrosion Resistance and Mechanical Properties of Cellular Al-Based Foams

Huang

Yang

Wang

et al. 2013

MSF

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Cellular Al-0.24wt.%Sc and Al-0.41wt.%Sc foams with a porosity ranging from 37 to 86% were successfully fabricated via the melt-foaming method with the calcium particles as the thickening agent and titanium hydride as blowing agent. The corrosion rate increased with the increasing of porosity for the cellular Al-0.24wt.%Sc, Al-0.41wt.%Sc and Al foams. Large size Al3Sc precipitates can accelerate the corrosion of the Al foams. However, T6-treatments could improve the corrosion resistance significantly. With T6-treatments, 0.24 wt.%Sc addition to Al foams exhibited unconspicuous decrease in the corrosion resistance but much improved strength.

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Effect of Scandium Doping on The Corrosion Resistance and Mechanical Behavior of Al-3Mg Alloy in Neutral Chloride Solutions

Cited by 6 publications

References 7 publications

Microstructure and Mechanical Behavior of Sc Doped Filler Rod in TIG Welding Dissimilar Al Mg Alloys

Microstructure and Mechanical Behavior of Sc Doped Filler Rod in TIG Welding Dissimilar Al Mg Alloys

Hydrophobicity — A Green Technique for Enhancing Corrosion Resistance of Alloys

Effects of Scandium on Corrosion Resistance and Mechanical Properties of Cellular Al-Based Foams

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