Formation of Ni-rich aluminide layers on an A356 aluminum alloy by a combined electroplating/laser alloying treatment: Microstructure and tribological characteristics

Rezaei, Masoud; Jeshvaghani, R. Arabi; Shahverdi, Hamid Reza; Mojaver, Reza; Torkamany, M.J.

doi:10.1016/j.jmapro.2017.07.028

Cited by 13 publications

(4 citation statements)

References 29 publications

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“…Consequently, the deformed surface layer exhibits a slipping motion, accelerating the formation of subsurface microcracks, leading to delamination [33,40]. The worn surface of alloy C (2 wt.% Mg), characterised by large craters of several hundred microns (indicated by arrow), reveals detachment of sheet-like debris.…”

Section: Analysis Of Worn Surfacesmentioning

confidence: 99%

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Effect of Magnesium Addition by Thixoforming Process on Wear Properties of A319 Alloy

Alhawari¹,

Omar

Samat³

et al. 2023

Preprint

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The effect of Mg addition (0.5–2.0%) on the as-cast and thixoformed microstructures, hardness and the tribological properties of A319 aluminium alloy was investigated. The investigations highlight the dry sliding wear test behaviour using a pin-on-disk tester configuration under the applied pressures of three loads of 10, 50 and 100 N at a constant sliding speed of 1 m/s and a sliding distance of 9 km. Detailed microstructural morphology studied for these alloys is correlated with the wear properties obtained. Results in the as-cast A319 alloy revealed that Mg addition transformed the Al2Cu phase and Si particle to form the Al5Cu2Mg3Si5 and Mg2Si intermetallic phases during the solidification. Moreover, the platelet-like morphology of β-Al5FeSi intermetallic completely converted to Chinese script-like morphology, π-Al8Mg3FeSi6 phase with the addition of Mg up to 1.5 wt.%. By adding Mg and performing thixoforming, the microstructure of the α-Al phase shows a fine globular primary phase surrounded by uniformly distributed Si and refined fragmented of intermetallic phases formed. The morphology of Mg2Si particles was modified from large, polygonal particles into relatively smaller and more globular, whereas the Chinese script-like morphology π-Al8Mg3FeSi6 changes to a compact shape. Adding Mg up to 2 wt.% increased the hardness at 100 Hv. The increase in Mg content enhances the wear resistance, friction coefficient and volume loss of thixoformed A319 alloy. A combination of abrasion and adhesion for alloys of low Mg dominates the wear mechanism. In contrast, excessive subsurface fracturing and delamination with minor abrasion are mainly observed for alloys of high Mg.

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Section: Analysis Of Worn Surfacesmentioning

confidence: 99%

“…Some evidence of cracks running parallel to the sliding plane results in low wear resistance. Fragmentation of intermetallic particles will facilitate the initiation and propagation of cracks and wear controlled by subsurface cracks [40,42]. Longitudinal cracks in this layer are also observed.…”

Section: Subsurface Analysismentioning

confidence: 99%

Effect of Magnesium Addition by Thixoforming Process on Wear Properties of A319 Alloy

Alhawari¹,

Omar

Samat³

et al. 2023

Preprint

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“…Over the years, many surface engineering techniques, including anodizing, electroplating, physical vapor deposition, surface melting and alloying, thermal spray coatings, plasma nitriding, ion implantation, and shot pinning have been investigated and used to enhance wear and corrosion resistance of aluminum alloys [5][6][7][8][9][10][11][12][13][14]. Economic efficiency, availability, high production speed, and no need for special industrial equipment are the positive aspects of the electroplating method, which in this study is used to create pure nickel coating on AA2024 alloy [15,16]. Effects of heat treatment processes on the crystallinity of these coatings, formation of intermetallics, adhesion of the coatings as well as wear and corrosion resistance have been studied by a number of researchers.…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on surface characteristics and corrosion behavior of nickel plated AA2024 aluminum alloy

Khiabani¹,

Seyedraoufi²,

Sohi³

2021

Surf. Topogr.: Metrol. Prop.

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In this study, AA2024 aluminum alloy specimens were electroplated with almost uniform nickel coating with an average thickness of 5 μm. The coated materials were then heat treated in an argon atmosphere at 450, 500 and 550 °C for 30, 60, 90, and 120 min, in order to investigate possible diffusion and formation of intermetallic compounds like Al 3 Ni and Al 3 Ni2 at the interface of the treated specimens. The fabricated layers were characterized by using scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS) analyzer, and x-ray diffraction (XRD) technique. XRD pattern of the electrodeposited materials indicated formation of semi-crystalline nickel coating. In addition, based on the XRD and SEM studies, intermetallic compounds began to form at 450, 500, and 550 °C after 120, 60, and 60 min, respectively. Polarization test were also carried out to study the corrosion behaviors of the coatings. The results indicated that heat treatment deteriorates the corrosion resistance of the coatings. Formation of intermetallic compounds increased the susceptibility to corrosion due to the increase in the formation of localized microcells.

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“…Therefore, in practical application in salt environments, the anti-corrosion and anti-wear properties of aluminium alloys are especially important. Several surface technologies have been developed to solve this problem, including electroplating, physical vapour deposition, laser cladding and micro-arc oxidation [3][4][5][6]. However, these methods are time-consuming, inefficient and cause environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Study of anti-corrosion and anti-wear properties on superhydrophobic aluminium alloy surfaces

Qiu

2018

Materials Science and Technology

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To improve the wear and corrosion resistance of aluminium alloys in salt environments, we produced superhydrophobic surfaces via high-speed electrical discharge machining. The specimens were characterised using a scanning electron microscope and a laser scanning confocal microscope and through contact angle (CA) measurement, measurement of electrochemical corrosion at an electrochemical workstation and wear testing. Results showed that the superhydrophobic specimens had a water CA of 151.5°. The corrosion of the as-obtained superhydrophobic specimens was significantly reduced by more than 50%, indicating their excellent anti-corrosion properties. The wear of as-obtained superhydrophobic specimens were reduced by approximately 10–35% in dry conditions and by approximately 45–85% in 3.5% NaCl solution, revealing their excellent anti-wear properties in both dry and salt environments.

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Formation of Ni-rich aluminide layers on an A356 aluminum alloy by a combined electroplating/laser alloying treatment: Microstructure and tribological characteristics

Cited by 13 publications

References 29 publications

Effect of Magnesium Addition by Thixoforming Process on Wear Properties of A319 Alloy

Effect of Magnesium Addition by Thixoforming Process on Wear Properties of A319 Alloy

Effect of heat treatment on surface characteristics and corrosion behavior of nickel plated AA2024 aluminum alloy

Study of anti-corrosion and anti-wear properties on superhydrophobic aluminium alloy surfaces

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