Microstructure, wear, and corrosion characterization of high TiC content Inconel 625 matrix composites

Bakkar, Ashraf; Ahmed, Mohamed M. Z.; Alsaleh, Naser A.; Seleman, Mohamed M. El-Sayed; Ataya, Sabbah

doi:10.1016/j.jmrt.2018.09.001

Cited by 60 publications

(31 citation statements)

References 27 publications

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“…The potentiodynamic polarization curves of heat‐treated specimens in SBF are shown in Figure , and the relevant parameters are summarized in Table . According to Table , the corrosion resistance of solution‐treated TNTZ alloy is comparable with those of CP titanium, Ti‐6Al‐4V ELI, and Ti‐13Nb‐13Zr alloys. The typical active–passive transition in the anodic region of β + α″ microstructure and passivation in the case of other microstructure were clearly recognized.…”

Section: Resultsmentioning

confidence: 87%

Tribological Performance and Electrochemical Behavior of Ti‐29Nb‐14Ta‐4.5Zr Alloy in Simulated Physiological Solution

et al. 2019

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Herein, the tribological performance and in vitro electrochemical behavior of Ti‐29Nb‐13Ta‐4.6Zr (TNTZ) reinforced by various nanosized phases are investigated. The various microstructures—1) single β‐phase, 2) β + α″ martensite, 3) β + ω, and 4) β + α—are prepared through purposeful heat treatment and subsequent aging. Sliding wear tests are performed under the applied load of 5 N and sliding speed of 0.3 mm s−1 against Ti‐6Al‐4V extra‐low interstitial alloy. Wear performance of the heat‐treated alloys significantly improves compared with the solution‐treated state, where the β + ω microstructure possesses the lowest weight losses. In fact, the precipitation of the nonsharable hard nanophase improves plastic shear resistance of the subsurface and in turn prohibits premature crack initiation. Such a supporting effect of the subsurface layer also increases the stability of the superficial oxide layer and decreases the amount of metallic/oxide debris. The electrochemical performances of the elaborated microstructures are assessed through potentiodynamic polarization and electrochemical impedance spectroscopy in the simulated body fluid. Interestingly, the β + ω alloy exhibits the extraordinary corrosion resistance compared to other structures. This is attributed to the uniform distribution, spherical morphology, and coherent interface of the ω‐nanoprecipitates.

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Section: Resultsmentioning

confidence: 87%

Tribological Performance and Electrochemical Behavior of Ti‐29Nb‐14Ta‐4.5Zr Alloy in Simulated Physiological Solution

et al. 2019

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“…Due to this strong tailorability, composite materials can be designed to satisfy the needs of technologies related to the energy, construction, aerospace, automobile, and other industries. Thus, composite materials constitute most of the commercial engineering materials nowadays [ 34 , 35 , 36 ]. On the other hand, this can result in anisotropy of the evaluated mechanical properties due to the different concentration of fibers in the different directions.…”

Section: Resultsmentioning

confidence: 99%

The Role of Orientation and Temperature on the Mechanical Properties of a 20 Years Old Wind Turbine Blade GFR Composite

et al. 2021

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This work evaluates the mechanical properties of the glass fiber reinforced polymer (GFRP) material taken from an out of service 100 KW power wind turbine blade which has been in service life of 20 years old. Investigated samples were taken from two positions of undamaged regions at 1.6 m and 5.4 m from the rotor hub, respectively. Microstructure investigation and lay-up analysis were carried out. Fiber weight fraction of the investigated samples was ranging between 0.55–0.60. Tensile and compression tests were carried out at the temperature range from −10 °C to +50 °C on specimens which were machined so as to be loaded in the blade length direction LD, transverse to the blade length TD and off axis; 45° to the blade length. Tensile elastic modulus of the investigated GFRP was determined in the three direction tested. The number of fiber fabric layers found to be decreasing along the blade length away from the root and the density of the fibers along the length is the highest (858 gm/mm2) and in the transverse direction is the lowest (83 gm/mm2). The microstructure of the GFRP composite showed good wetting for the fiber by the polymer with some features of lack of penetration at the high density fiber bundles and some production porosity in the matrix. The tensile Properties at room temperature (RT) and high temperature are almost similar with the highest properties for the samples aligned with the blade length. The compressive strength is highest at the transverse direction samples and lowest at the blade length direction and decreasing with the increase of the test temperature. The bending properties are significantly affected by the fiber orientation with the highest properties for samples aligned with the blade length and the lowest for the samples with the transverse direction.

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“…Scanning electron microscopy (SEM) has been widely used to examine the microstructural changes of machined surfaces of MMCs, where the grain deformation, voids, particles cracks, protuberances and matrix tearing caused by high plastic deformation on metallic matrix as well as particles removal have been found on the workpiece surface and subsurface [7,8]. In terms of phase contrast examination, techniques such as Energy-Dispersive Spectroscopy (EDS), Electron Backscatter Diffraction (EBSD), Transmission Electron Microscopy (TEM) and Xray diffraction (XRD) have been employed for the in-depth analysis [32,38,39] (see Figure 6). EBSD is now becoming a popular technique as it has been widely used to provide quantitative information about grain characterisation of the machined workpiece including the grain orientation and phase identification [40][41][42].…”

Section: Surface Integrity After Machining Of Metal Matrix Compositesmentioning

confidence: 99%

State-of-the-art of surface integrity in machining of metal matrix composites

Liao

Abdelhafeez

et al. 2019

International Journal of Machine Tools and Manufacture

174

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Metal matrix composites (MMCs), as advanced substitutes of monolithic metallic materials, are currently getting an increasing trend of research focus as well as industrial applications for demanding applications such as aerospace, nuclear and automotive because of their enhanced mechanical properties and relative lightweight. Nevertheless, machining of MMC materials remains a challenging task as a result of their structural heterogeneity which leads to deterioration of the machined surface integrity and rapid tool wear. While prior review papers have concentrated on the other machining aspects (e.g. process modelling and tool wear) of MMCs, none of them has addressed the subject of reviewing workpiece surface integrity aspects in details. This paper presents a detailed literature survey on the conventional and nonconventional machining of metal matrix composites with the primary focus on the aspects related to workpiece surface integrity. The contribution of material mechanical and microstructural properties as well as the material removal mechanism upon the quality of workpiece surfaces/subsurface are discussed along with their influences on the fatigue performance of machined part.

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Microstructure, wear, and corrosion characterization of high TiC content Inconel 625 matrix composites

Cited by 60 publications

References 27 publications

Tribological Performance and Electrochemical Behavior of Ti‐29Nb‐14Ta‐4.5Zr Alloy in Simulated Physiological Solution

Tribological Performance and Electrochemical Behavior of Ti‐29Nb‐14Ta‐4.5Zr Alloy in Simulated Physiological Solution

The Role of Orientation and Temperature on the Mechanical Properties of a 20 Years Old Wind Turbine Blade GFR Composite

State-of-the-art of surface integrity in machining of metal matrix composites

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