Corrosion Behavior and Hardness of Al–M (M: Mo, Si, Ti, Cr) Alloys

Esquivel, J.; Gupta, Rajeev

doi:10.1007/s40195-017-0550-2

Cited by 21 publications

(14 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Commercial aluminum (Al) alloys have been widely used in the automotive, aircraft manufacturing, and shipbuilding industries, because of their excellent mechanical properties and low densities [1][2][3][4]. Vibrations, which often lead to fatigue failure of structural materials, have been the subject of increasing attention in the above fields [5].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Jiang

Zhang

Liu

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

This study investigated the microstructure, mechanical, and damping properties of a non-age-hardened Al alloy (5086) and an age-hardened Al alloy (7075) after friction stir processing (FSP). Microstructural analyses indicate that FSP led the grain refinement of samples, and the grains size decreased with the decrease in the tool rotation rate. Furthermore, FSP with low rotation rate promotes the η phase precipitation in the 7075 alloy, causing the micron-sized particles in the 5086 alloy to break up. After being subjected to FSP with low rotation rate, the 5086 and 7075 alloys exhibited excellent mechanical and damping properties. Such improved properties were ascribed to their equilibrium grain boundaries, fine grain, low density of dislocations, high fraction of high misorientation angle, and uniform particle distribution.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Jiang

Zhang

Liu

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

show abstract

“…The authors have observed that areas that tend to grow faster (finer microstructures) have better corrosion resistance than those having coarser dendritic microstructures. Esquivel and Gupta [37] examined the corrosion behavior of Al-M (M: Mo, Si, Ti, Cr) alloys and reported that alloys produced by casting and containing coarse IMCs exhibited poor corrosion resistance. However, the Al-5 at% Cr alloy produced by high-energy ball milling exhibited a considerably improved corrosion resistance, which has been attributed to the corresponding nanoscale refinement of the alloy microstructure.…”

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

“…However, since solubility of most alloying elements in Al is extremely limited, formation of secondary phases which cause localized corrosion [3,6] is inevitable through conventional processing methods. For example, Al-5at.%Cr and Al-5at.%Ti, produced by casting, showed the presence of coarse intermetallics and high corrosion rate without a significant increase in strength [7]. Therefore, non-conventional alloy production methods capable of increasing the solid solubility of alloying elements are desirable.…”

mentioning

confidence: 99%

Excellent corrosion resistance and hardness in Al alloys by extended solid solubility and nanocrystalline structure

Esquivel

Murdoch

Darling

et al. 2017

Materials Research Letters

Self Cite

View full text Add to dashboard Cite

Development of ultra-high strength and corrosion-resistant aluminum (Al) alloys is demonstrated by a combination of suitable alloying elements and processing technology able to cause extended solid solubility and nanocrystalline structure. Binary Al-transition metal (M: Cr, Ni, Mo, Si, Ti, Mn, V, Nb) alloys, produced by high-energy ball milling and subsequent cold compaction, have exhibited significantly high hardness and corrosion resistance compared to any commercial Al alloy. The cyclic potentiodynamic polarization tests revealed a significant improvement in pitting and repassivation potentials. X-ray diffraction analysis revealed the grain refinement < 100 nm and extended solid solubility. IMPACT STATEMENT High-energy ball-milled Al alloys, owing to excellent corrosion resistance and high hardness, are expected to be a new class of Al alloys and initiate a multidisciplinary research direction.

show abstract

Corrosion Behavior and Hardness of Al–M (M: Mo, Si, Ti, Cr) Alloys

Cited by 21 publications

References 31 publications

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

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

Excellent corrosion resistance and hardness in Al alloys by extended solid solubility and nanocrystalline structure

Contact Info

Product

Resources

About