High-Temperature Friction and Wear Features of Nickel-Based Single Crystal Superalloy

Li, Lei; He, Kun; Yang, Weizhu; Yue, Zhufeng; Wan, Huan

doi:10.1007/s11249-020-1266-4

Cited by 29 publications

(6 citation statements)

References 36 publications

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“…In recent years, LFW has also been applied to the assembly of components made of Nickel (Ni)-based superalloys, as well as in many other engineering applications, ranging from automotive to agriculture, and allowing for new designs and applications [1,2]. In addition to overcoming the disadvantages associated with mechanical assembly techniques, such as fretting fatigue and thermomechanical fatigue [3][4][5] observed in conventional blade-disk setups, or cracking and distortions in fusion-based welding assemblies, LFW joints are characterized by higher mechanical properties and extended component life in service [6,7].…”

Section: Introductionmentioning

confidence: 99%

Grain size and misorientation evolution in linear friction welding of additively manufactured IN718 to forged superalloy AD730™

Tabaie

Rézaï-Aria²,

Flipo³

et al. 2021

Materials Characterization

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Selective Laser Melted (SLM) Inconel718 (IN718) superalloy was linear friction welded (LFWed) to forged AD730 TM Nickel-based superalloy. Successful joints free of micro-porosity, micro-cracking, and oxides were obtained. Microstructure variations across the weld line developed during LFW were examined using different techniques, including laser confocal microscopy, scanning electron microscopy, energy dispersive spectroscopy (EDS) and electron backscatter diffraction (EBSD). The microstructure was also evaluated, particularly in terms of Grain size and misorientation changes were determined and correlated with microhardness evolution in different regions of the weld joint. The characteristics of the microstructure on both sides of the weld joint was analyzed and related to the deformation and temperature paths imposed during the LFW process. Dynamic recrystallization (DRX) occurred on both sides of the dissimilar weld line and it was found that Discontinuous DRX (DDRX) and Continuous DRX (CDRX) took place in the WZ and in the TMAZ, respectively. In order to study the influence of the starting microstructure in the LFW experiments, LFW of a homogenized SLM IN718 sample was analyzed and compared with the non-homogenized sample. A clear change in the size and grain misorientation levels of the heat and thermomechanical affected zones were observed between the two conditions. The differences were related to a greater degree of strain induced in homogenized sample and the increasing effect of the solid solution strengthening mechanism caused by a partial dissolution of the second-phase strengthening particles in the matrix.

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Section: Introductionmentioning

confidence: 99%

Grain size and misorientation evolution in linear friction welding of additively manufactured IN718 to forged superalloy AD730™

Tabaie

Rézaï-Aria²,

Flipo³

et al. 2021

Materials Characterization

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“…In addition, at elevated temperatures, the increasing dominance of dislocation climb, aided by increased lattice diffusion at high temperatures, results in a significant softening of metals [18,19]. Thus, the wear mechanism at high temperature is different from that at ambient temperature [20,21]. Hemant et al [22] investigated the sliding friction and wear behaviors of austenitic stainless steel at a temperature of 473 K and 823 K, respectively, and found serious damage at 823 K due to the softening of the rubbing surfaces.…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

et al. 2021

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The friction and wear behaviors of Fe-19Cr-15Mn-0.66N steel were investigated under applied loads of 5 N and 15 N at the wear-testing temperatures of 300 °C and 500 °C using a ball-on-disc tribometer. The wear tracks were evaluated by scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM) to reveal the variation in morphologies. Energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were used to determine the components of oxide layers formed on wear surfaces. The results demonstrated that the oxide layers are favorable for obtaining a low friction coefficient under all conditions. The average friction coefficient decreased with increasing load at 300 °C, while it increased with the increase in applied load at 500 °C. At 300 °C, severe abrasive wear characterized by grooves resulted in a high friction coefficient with 5 N applied, whereas the formation of a denser oxide layer consisting of Cr2O3, FeCr2O4, Fe2O3, etc., and the increased hardness caused by work hardening led to a decrease in friction characterized by mild adhesive wear. At 500 °C, the transformation of Fe2O3 to the relatively softer Fe3O4 and the high production of lubricating Mn2O3 resulted in a minimum average friction coefficient (0.34) when 5 N was applied. However, the softening caused by high temperature weakened the hardening effect, and thus the friction coefficient increased with 15 N applied at 500 °C.

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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 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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High-Temperature Friction and Wear Features of Nickel-Based Single Crystal Superalloy

Cited by 29 publications

References 36 publications

Grain size and misorientation evolution in linear friction welding of additively manufactured IN718 to forged superalloy AD730™

Grain size and misorientation evolution in linear friction welding of additively manufactured IN718 to forged superalloy AD730™

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

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

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