On the potential of aluminum crossover alloys

Stemper, Lukas; Tunes, Matheus A.; Tosone, Ramona; Uggowitzer, Peter J.; Pogatscher, Stefan

doi:10.1016/j.pmatsci.2021.100873

Cited by 72 publications

(25 citation statements)

References 129 publications

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“…Al and Al-based alloys, owing to their inherent light weight, toughness, and high strength, have gained attention as important engineering materials for aerospace industries [ 1 , 2 , 3 ]. Of all the available alloys, Al-7075 occupies a vital place in the designing and manufacturing of aerospace components [ 4 , 5 , 6 ]. However, they are prone to high-stress corrosion cracking that fails in high-stress concentration regions, such as riveted zones in airplanes [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

et al. 2022

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The work aimed to produce Ni-P-MoS2-Al2O3 on Al-7075 alloys with multiple attributes through an electroless (EL) plating route. The effects of additives (MoS2 and Al2O3) in the EL bath on the surface morphology, topography, hardness, composition (phase and elemental), roughness, wettability, and coating thickness were evaluated. Results indicate a substantial enhancement in microhardness of the EL-coated surfaces by 70% (maximum hardness = ~316 HV) using powders, and 30% (244 HV) without powders. The maximum coating thickness and water contact angle obtained with powders were 6.16 μm and 100.46°, respectively. The coefficient of friction for the samples prepared using powders was 0.12, and for the base material it was 0.18. The compositional analysis through EDS and XRD suggested the incorporation of a hard and lubricious layer on the EL-coated surface owing to the presence of different phases of Al, Mo, P, Zn, O, and S. Therefore, the resulting coating surfaces impart hardness, self-lubrication, hydrophobicity, and wear resistance simultaneously.

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Section: Introductionmentioning

confidence: 99%

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

et al. 2022

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“…Aluminum-silicon alloy A04130 and aluminum-magnesium alloy AA5056 are structural materials widely used in the aircraft, spacecraft, vehicle and marine industries [1,2]. Since these industries are constantly developing, introducing advanced technologies into the manufacturing process of such enterprises is always a critical task.…”

Section: Introductionmentioning

confidence: 99%

Regularities of Friction Stir Processing Hardening of Aluminum Alloy Products Made by Wire-Feed Electron Beam Additive Manufacturing

Калашникова

Чумаевский

Калашников

et al. 2022

Metals

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Friction stir processing of additive workpieces in the sample growth direction (the vertical direction) and the layer deposition direction (the horizontal one) was carried out. The hardening regularities of aluminum-silicon alloy A04130 and aluminum-magnesium alloy AA5056 manufactured by electron beam additive technology were studied. For each material, 1 to 4 subsequent tool passes were performed in both cases. It was found that the formation of the stir zone macro-structure does not significantly change with the processing direction relative to the layer deposition direction in additive manufacturing. The average grain size in the stir zone after the fourth pass for AA5056 alloy in the horizontal direction was 2.5 ± 0.8 μm, for the vertical one, 1.6 ± 0.5 μm. While for the alloy A04130, the grain size was 2.6 ± 1.0 μm and 1.8 ± 0.7 for the horizontal and vertical directions, respectively. The fine-grained metal of the stir zone for each alloy in different directions had higher microhardness values than the base metal. The tensile strength of the processed metal was significantly higher than that of the additively manufactured material of the corresponding alloy. The number of tool passes along the processing line is different for the two selected alloys. The second, third and fourth passes have the most significant effect on the mechanical properties of the aluminum-magnesium alloy.

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“…7000 series aluminium alloys (Al-Zn-Mg-Cu series) have the combination of high tensile strength, toughness, fatigue life and corrosion resistance, which have been widely used in the aerospace [1][2][3]. Generally, the quenching process is necessary for the aluminium alloy to achieve the supersaturated solid solution.…”

Section: Introductionmentioning

confidence: 99%

Prediction of residual stress field on the surface of quenched 7055 aluminium alloy plates

Ren

Zhang

et al. 2022

Mater. Res. Express

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The effect of width on the surface quenching residual stress distribution in 7055 aluminum alloy plates of different width values was studied. The distribution of quenching residual stresses of the plates were studied by both simulation and experiment. Numerical simulation was carried out by using the Finite Element Method (FEM), and experimental measurements were conducted to verify the simulation work. The results show that the experimental distributions are approximately consistent with the simulation distribution. The stress fluctuations exist in the edge of the plate and the ratio of the fluctuation region decreases as the width increases. Considering the consistency of the center-point stress and actual length of the fluctuation region, we proposed a method to predict the surface residual stresses distribution using two-step data processing, providing a more convenient method for predicting the stress distribution of the plate with a large dimension by the plate with a small width.

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On the potential of aluminum crossover alloys

Cited by 72 publications

References 129 publications

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

Regularities of Friction Stir Processing Hardening of Aluminum Alloy Products Made by Wire-Feed Electron Beam Additive Manufacturing

Prediction of residual stress field on the surface of quenched 7055 aluminium alloy plates

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