Enhancing the wear and oxidation behaviors of the Inconel 718 by low temperature aluminizing

Döleker, Kadir Mert; Erdoğan, Azmi; Yener, Tuba; Karaoğlanlı, Abdullah Cahit; Uzun, Orhan; Gök, Mustafa Sabri; Zeytin, Sakin

doi:10.1016/j.surfcoat.2021.127069

Cited by 45 publications

(10 citation statements)

References 43 publications

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“…6. The higher hardness values in the coating layer can be associated with forming the FeAl phases, and similar results were observed for the pack aluminizing process of steels in different studies [56,67].…”

Section: Characterizationsupporting

confidence: 81%

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Enhancement of Marine Corrosion and Tribocorrosion Resistance of Offshore Mooring Chain Steel by Aluminizing Process

Alkan

2022

Brodogradnja

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The safety of mooring systems and accessories is one of the most critical issues in the structural integrity of floating oil/gas and renewable offshore structures. Mooring chains and accessories operate under dynamic conditions in harsh marine environments. They are subject to severe wear and corrosion between their links due to relative movement from waves, wind, and ocean currents that disrupt structural integrity. To cope with this problem, the pack-aluminizing process was applied on the R4 grade offshore mooring chain steel for 2 h at 850 °C to improve corrosion and wear-corrosion (tribocorrosion) resistance in 3.5% NaCl. The tribocorrosion behaviour of untreated and aluminized samples was investigated by a tribo-electrochemical setup that simultaneously allows for collecting the wear and corrosion data. Potentiodynamic and potentiostatic corrosion and tribocorrosion tests were carried out to understand corrosion kinetics. Optical, SEM, XRD and EDS analyses were performed to characterize the aluminide layer and surface morphologies before and after tribocorrosion investigations. In polarization scans under corrosion and tribocorrosion conditions, the current showed a significant activation stretch of several orders of magnitude, with minor potential changes in the anodic region. Due to the galvanic effects of sliding under natural electrochemical conditions, the untreated R4 alloy exhibited cathodic properties in the wear track, while the aluminium coating was out of the wear track due to its oxide-forming ability. At the cathodic potential, two hard Al2O3 materials under pure mechanical effects and third bodies emerging from cracks on the coating surface increase the friction coefficient (COF), while the oxide product film, which has a lubricating ability and pits which reduces the contact area, caused a decrease in COF at the high anodic potential. The study revealed that while the aluminide layer improved the corrosion and tribological character of R4 alloy, material loss from wear track increased due to micro fractures and cracks in the coating layer during sliding tribocorrosion conditions.

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Section: Characterizationsupporting

confidence: 81%

“…The packaluminizing process has been used to overcome corrosion and wear issues of different materials subjected to various working and environmental conditions [44,53,55]. Several researchers investigated the thickness, microstructure, hardness, wear and corrosion damage mechanisms of the aluminizing layer [55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Marine Corrosion and Tribocorrosion Resistance of Offshore Mooring Chain Steel by Aluminizing Process

Alkan

2022

Brodogradnja

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“…It can be said that the coefficient of friction is mainly related to surface properties such as hardness, surface roughness, lubrication conditions, and local chemical interactions at the interface of the wear pair. 38 A friction coefficient result compatible with hardness, which is one of the parameters, was encountered. The friction coefficient values decreased depending on the increasing hardness.…”

Section: Wear Behaviormentioning

confidence: 90%

Laser Remelting Power Effect on Microstructure, Hardness and Wear Behavior of AISI 1020

Erdoğan

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, the effect of laser remelting on the microstructure, hardness, and wear properties of AISI 1020 steel was investigated. In this context, laser remelting process was carried out at different laser powers. The surface of steel was subjected to laser remelting process at 1, 1.3, and 1.8 kW powers. Thanks to the applied laser remelting surface modification, martensitic transformation was obtained in the pearlite+ferrite structure. Depending on the applied laser power, the transformation depth increased. The martensitic transformation was determined at a depth of 70 µm at the lowest laser power and 250 µm at the highest laser power. An increase up to 552 HV was achieved after the remelting process on the surface of AISI 1020 steel. Depending on the increasing laser power, the highest surface hardness values decreased. However, the hardness values obtained with increasing laser power were preserved at longer distances towards the center. In ball-on-disc tribology tests, laser remelting has been shown to reduce wear losses by up to 52%. The highest wear resistance was determined in the sample whose surface was modified with the lowest laser power. Laser remelted samples showed lower friction coefficient due to hardness and oxidation on their surfaces.

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“…They concluded that creep and oxidation at high temperatures greatly affected the fatigue life, especially for long holding periods. The effect of temperature on the wear mechanism of materials is also a focus of researchers (Günen, 2020;Li et al, 2020;Döleker et al, 2021). Zhen (Döleker et al, 2021) studied the influence of the test temperature on the tribological properties of nickelbased alloys.…”

Section: Introductionmentioning

confidence: 99%

“…The effect of temperature on the wear mechanism of materials is also a focus of researchers (Günen, 2020;Li et al, 2020;Döleker et al, 2021). Zhen (Döleker et al, 2021) studied the influence of the test temperature on the tribological properties of nickelbased alloys. Through observation and analysis, the mechanism of friction wear was discussed.…”

Section: Introductionmentioning

confidence: 99%

The Friction and Wear Behaviours of Inconel 718 Superalloys at Elevated Temperature

Lü

Zhang³

et al. 2021

Front. Mater.

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Machine parts made of nickel-based alloys usually work in high-temperature service environments such as aircraft turbines. The mechanical properties and antioxidant properties of materials tend to be reduced at high temperatures. Therefore, it is of great practical significance to reveal the wear mechanisms of materials at different temperatures. In the present investigation, the tribological behaviour of an Inconel 718 superalloy at different temperatures was investigated. First, the coefficient of friction curves obtained under different test conditions were analysed in detail to illustrate the dynamic change process of friction at high temperature. Next, the morphology of the wear surface, surface morphology of friction pairs and material transfer during friction were analysed via scanning electron microscopy 3D morphology and energy dispersive spectroscopy measurements to reveal the wear mechanisms of materials in a high-temperature environment. Finally, the microstructure of the cross section of the wear tracks was analysed by using optical microscopy electron back-scattered diffraction etc., to clarify the mechanisms of crack initiation and material removal. The results show that the friction properties of the Inconel 718 superalloy have differences at different test temperatures. Although increasing the test temperature does not necessarily aggravate the wear of the material, the oxidation of the wear surface during the friction process significantly increases. In addition, when the contact load increases, the thickness of the oxide layer and wear of the material simultaneously increase.

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Enhancing the wear and oxidation behaviors of the Inconel 718 by low temperature aluminizing

Cited by 45 publications

References 43 publications

Enhancement of Marine Corrosion and Tribocorrosion Resistance of Offshore Mooring Chain Steel by Aluminizing Process

Enhancement of Marine Corrosion and Tribocorrosion Resistance of Offshore Mooring Chain Steel by Aluminizing Process

Laser Remelting Power Effect on Microstructure, Hardness and Wear Behavior of AISI 1020

The Friction and Wear Behaviours of Inconel 718 Superalloys at Elevated Temperature

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