Corrosion behavior of age hardening aluminum alloys produced by high-energy ball milling

Ozdemir, Furkan; Witharamage, C.S.; Darwish, Ahmed A; Okuyucu, H.; Gupta, Rajeev

doi:10.1016/j.jallcom.2021.163488

Cited by 22 publications

(15 citation statements)

References 67 publications

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“…[32,36] The investigation of the influences of HEBM on the corrosion and hardness of AA2024 has been discussed in detail in previous studies. [19,37] The featured phenomenon investigated in the present study, which is the improved hardness and corrosion resistance of HEBM-2024-2V could be attributed to the simultaneous influence of extended solid solubility of V in AA2024 and the refined microstructure, as reported in the literature. [5,6,13,14,38,39] The improved corrosion resistance in ball milled alloys containing V could be attributed to: (a) decrease in the concentration and mobility of point defects due to the incorporation of V into the passive film, (b) repassivation of the alloy due to dissolution of V within the pit and subsequent deposition of V on the cathodic particles.…”

Section: Discussionsupporting

confidence: 72%

“…The passive region and E pit were not observed for AA2024-T3 due to pitting below the OCP. [19] The pit transition potential (E ptp ) is defined as the potential where repassivation started and it is shown by an arrow in Figure 3a. [30,31] E ptp has been reported to be a measure of repassivation [32] or protection [33,34] in case of a breakdown in the passive film.…”

Section: Corrosion Behaviormentioning

confidence: 99%

“…This high hardness could be due to the nanocrystalline microstructure, the refined intermetallic compounds, and the extended solubility of the alloying elements, which is consistent with the reported literature on high-energy ball-milled commercial alloys. [5,16,19,30] The influence of the V addition can also be seen in the increment of the average hardness of HEBM-2024-2V compared to HEBM-2024 (~251 HV). This increase can be attributed to the solid solution strengthening and dispersion hardening caused by V.…”

Section: Hardnessmentioning

confidence: 99%

“…[16] However, the role of V in alloys containing a large population of cathodic particles has not been investigated yet. [17][18][19] Aluminum alloy 2024 (AA2024) is known to exhibit poor corrosion resistance due to the presence of cathodic precipitates and constituent particles. Conversion coatings and organic coatings containing corrosion inhibitors such as vanadates have been reported to improve the corrosion performance of AA2024.…”

Section: Introductionmentioning

confidence: 99%

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Influence of vanadium addition on corrosion behavior of high‐energy ball milled aluminum alloy 2024

Ozdemir

Gupta

2022

Materials & Corrosion

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The effect of V addition on the hardness and corrosion of aluminum alloy 2024 (AA2024) produced by high-energy ball milling has been investigated. Highenergy ball milled alloys exhibited enhanced solid solubility of alloying elements and ultrafine grains. The addition of V improved the corrosion resistance of the AA2024 alloy, which was attributed to the deposition of V on the cathodic particles and therefore decrease in their ability to sustain large cathodic currents.

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Section: Discussionsupporting

confidence: 72%

Section: Corrosion Behaviormentioning

confidence: 99%

Section: Hardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of vanadium addition on corrosion behavior of high‐energy ball milled aluminum alloy 2024

Ozdemir

Gupta

2022

Materials & Corrosion

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“…Aluminium is the third most abundant element in the earth's crust, as well as the second most consumed metal by weight, trailing only iron and its alloys [21]. Modern aluminum alloys are useful for structural applications and as steel replacements to their low density and attractive features such as high ductility and corrosion resistance.…”

Section: Methodsmentioning

confidence: 99%

Optimal Selection of Cutting Parameters for Surface Roughness in Milling Machining of AA6061-T6

2022

IJE

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Due to its ability to remove material quickly while maintaining optimum surface quality, end milling is considered one of the most frequent metal cutting procedures in industry. The present study aimed to investigate the impacts of cutting parameters and tool geometry on milling of Aluminum Alloy 6061-T6 to examine the impact surface roughness by utilizing response surface methodology (RSM). RSM was used to create a second-order mathematical model of surface roughness for this purpose. A multiple regression analysis used the analysis of variance to demonstrate the effect of machining settings on surface roughness and determine experiment performance. The trials for optimizing surface roughness were set up utilizing the central composite design (CCD) method and various cutting parameters such as spindle speed, feed rate and depth of cut. Also the parameters used in tool geometry are the radial rake angle (10, 13, 16, 19 and 22 degrees), and nose radius (0, 0.2, 0.4, 0.6 and 0.8 mm). The result shows that the nose radius has more significant effect on the surface roughness followed by the radial rake angle. Moreover, the effect of the depth of cut on surface roughness is more dominant than cutting speed. The optimum combinations of cutting and tool geometry parameters were cutting speed (60.53 m/min), feed rate (0.025 mm/tooth), depth of cut (0.84 mm), radial rake angle (12.72 degree) and nose radius (0.34 mm).

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The effect of three types of heat treatment on the hardness and corrosion resistance of Al 2014 alloy

Iqbal,

Rahman,

Naveed

2024

Applied Research

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Al 2014 is a high‐strength aluminum alloy widely used in the aerospace and automotive industries for its mechanical strength. This research examines the effects of three heat treatment processes—retrogression and re‐aging (RRA), T6 standard aging, and a modified RRA with high‐temperature pre‐aging—on the hardness and corrosion resistance of Al 2014. Polarization studies using potentiodynamic electrochemical methods in a 3.5 wt% sodium chloride solution were conducted to evaluate the corrosion resistance. The results showed that heat treatment, which causes precipitation hardening, shifted the corrosion potential (E) toward a more noble direction. The formation of Al2Cu precipitates is associated with improved corrosion resistance. Additionally, samples treated with the T6 process exhibited a higher corrosion current density compared to untreated Al 2014 alloy samples, indicating superior corrosion resistance. Analysis of corroded surfaces using scanning electron microscopy (SEM) with energy‐dispersive X‐ray spectroscopy (EDS) showed evidence of general and pitting corrosion, with distinct patterns among the three heat treatment processes. A comparison of the results revealed that the T6 standard aging process provided the best combination of hardness and corrosion resistance. This was likely due to the formation of stable precipitates during aging. The results also indicated that the RRA process showed good performance, suggesting it is a viable alternative when a balance between hardness and toughness is required. The modified RRA with high‐temperature pre‐aging resulted in lower performance, likely due to overaging, which reduced hardness and corrosion resistance. These findings highlight the significance of heat treatment in improving the corrosion resistance of Al 2014 alloy. This suggests that particular processes can enhance the alloy's durability in corrosive environments, potentially leading to a longer lifespan and reduced maintenance costs. The T6 standard aging process offers the best balance of enhanced hardness and corrosion resistance for Al 2014 alloy, making it ideal for extending lifespan and reducing maintenance costs in corrosive environments. Careful selection of heat treatment is crucial based on specific alloy performance requirements.

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Corrosion behavior of age hardening aluminum alloys produced by high-energy ball milling

Cited by 22 publications

References 67 publications

Influence of vanadium addition on corrosion behavior of high‐energy ball milled aluminum alloy 2024

Influence of vanadium addition on corrosion behavior of high‐energy ball milled aluminum alloy 2024

Optimal Selection of Cutting Parameters for Surface Roughness in Milling Machining of AA6061-T6

The effect of three types of heat treatment on the hardness and corrosion resistance of Al 2014 alloy

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