Machining of Hastelloy-X Based on Finite Element Modelling

Çakir, Fatih; Sofuoğlu, Mehmet Alper; Gürgen, Selim

doi:10.4028/www.scientific.net/aef.30.1

Cited by 19 publications

(7 citation statements)

References 17 publications

(27 reference statements)

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“…Inconel 718 has high strength-toweight ratio and provides high strength at elevated temperatures, superior creep resistance, and good corrosion resistance. In aeroengines, this alloy is employed for turbine blades operating at crucial conditions, such as high temperature and pressure (Th akur et al 2009;Çakır et al 2015;Çakır et al 2018). Although this advanced material contributes to improvement in the aviation industry, it exhibits poor manufacturing properties due to its superior mechanical and chemical properties, especially at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

An Investigation on Surface Roughness and Tool Wear in Turning Operation of Inconel 718

Gürgen

Tali

Kuşhan

2019

J.Aerosp. Technol. Manag.

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This paper investigates the influences of three different input parameters, such as feed rate, insert nose radius, and insert coating methods, in the turning operation of Inconel 718. The coating methods were selected as medium temperature chemical vapor deposition (MT-CVD) and physical vapor deposition (PVD) and in addition to coating methods, the role of various coating materials was discussed since the inserts were coated with multi-layers of TiCN/Al2O3/TiN and single-layer of TiAlN on carbide substrates. The results were discussed in terms of wear behavior of cutting tools and surface quality of the workpiece, which is indicated by surface roughness. A full factorial experimental design was employed in the present work and the results were evaluated using main effects plots. Furthermore, the analysis of variance (ANOVA) method was applied to specify both reactive and non-reactive effects of experimental parameter reactions. The results showed that surface roughness is reduced using low feed rates and large nosed inserts in the operations. Furthermore, TiAlN-coated inserts with PVD method provided better surface finish than with MT-CVD method. It was also found that surface roughness increases as the wear rate of inserts increases.

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Section: Introductionmentioning

confidence: 99%

An Investigation on Surface Roughness and Tool Wear in Turning Operation of Inconel 718

Gürgen

Tali

Kuşhan

2019

J.Aerosp. Technol. Manag.

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“…For the turning of difficult-to-machine materials, the finite element method was proven to be feasible and accurate. 27 Based on this, the simulation and experiment were combined to investigate the force-thermal characteristics and the mechanism of RCTs under different parameters. A comparative study of cutting 316L austenitic stainless steel using CL-RCT and VL-RCT was carried out.…”

Section: Introductionmentioning

confidence: 99%

Simulation and experiment on the effects and mechanism of variable-length restricted contact tool

Li,

Zhong,

Zhang

et al. 2023

Advances in Mechanical Engineering

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Difficult-to-machine materials such as stainless steel are widely used in the construction industry, because of their excellent mechanical properties and corrosion resistance. However, the poor tool-chip contact environment, severe tool wear, and heavy chip accumulation inhibit the machining efficiency. In this paper, 316L austenitic stainless steel was selected to investigate the effect of a variable-length restricted contact tool (VL-RCT), aiming at reducing the cutting temperature and increasing the tool life. A finite element simulation model of restricted contact cutting was established to investigate the machining parameters and restricted contact parameters on cutting performances and to clarify the mechanism of the VL-RCT in the cutting process. Additionally, cutting experiments were conducted to verify the cutting process mechanism. The results showed that the variable restricted contact structure efficiently reduced the cutting force and cutting temperature and improved the cutting performances of austenitic stainless steel. Both numerical simulation and cutting experiments reported that the trapezoidal restricted contact structure improved the cutting performance the best. Accordingly, this research provided theoretical guidance for the optimization of tool structure and the selection of cutting parameters, as well as a solid foundation for the future development of relevant design theories and methods for high-performance tools.

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“…Sofuog˘lu et al 15 combined ultrasonic vibration and tunnel furnace energies, simultaneously during the turning process to investigate cutting tool temperature, chip morphology, surface roughness, and chatter stability. C xakır et al 16 developed a numerical model to machining forces, machining temperature, and chip morphology during the machining of Hastelloy-X. Orak et al 17 developed an ANN based soft computing model to determine optimum parameters during the turning process.…”

Section: Introductionmentioning

confidence: 99%

Surface integrity analysis of aluminum 3003 alloy during ultrasonic-vibration-laser assisted turning

Deswal

Kant

2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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Surface integrity of the machined surface is an important aspect considering their surface alterations, metallurgical effects, and mechanical characteristics during the machining process. Industries have been seeking a capable machining technology that can improve the machining process capabilities especially in an eco-friendly manner. Hybrid machining processes have shown significant improvement in machining performance when compared with the conventional turning (CT) process without using any cutting fluids. Moreover, a recently developed hybrid machining technology, that is, ultrasonic-vibration-laser assisted turning (UVLAT) has shown better machinability than the CT process. Therefore, an attempt has been made to improve the surface integrity of aluminum 3003 alloy in terms of machining forces, surface roughness, surface damage, microstructure, microhardness, residual stresses, and corrosion behavior during the UVLAT process. A comparative surface integrity analysis has been performed among the CT, ultrasonic vibration assisted turning (UVAT), laser assisted turning (LAT), and UVLAT processes. Significant improvement in the surface integrity has been observed for the aluminum 3003 alloy during the UVLAT process in comparison to the CT, UVAT, and LAT processes. The periodic separation of the cutting tool and thermal softening of the workpiece material, simultaneously during the UVLAT process is the possible reason for the improvement in surface integrity. Results demonstrated that the UVLAT process has an excellent potential to enhance the surface integrity of aluminum alloys and is better than the CT, UVAT, and LAT processes.

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Machining of Hastelloy-X Based on Finite Element Modelling

Cited by 19 publications

References 17 publications

An Investigation on Surface Roughness and Tool Wear in Turning Operation of Inconel 718

An Investigation on Surface Roughness and Tool Wear in Turning Operation of Inconel 718

Simulation and experiment on the effects and mechanism of variable-length restricted contact tool

Surface integrity analysis of aluminum 3003 alloy during ultrasonic-vibration-laser assisted turning

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