Morphological characterization of chip segmentation in Ti-6Al-7Nb machining: A novel method based on digital image processing

Carvalho, Sílvia; Horovistiz, A.L.; Davim, J. Paulo

doi:10.1016/j.measurement.2022.112330

Cited by 12 publications

(9 citation statements)

References 35 publications

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“…The chip can be classified considering various aspects, likes microstructure of material, cutting speed, feed rate, depth of cut, shear angle, and others [16]. To study the cutting performance in a Ti-alloy biocompatible, Carvalho et al [17] analysed the chip morphology. The authors developed an image analysis technique to evaluate the morphology of segmented chips.…”

Section: Introductionmentioning

confidence: 99%

A study on the temperature of cutting fluid in the micro-cutting of commercially pure titanium

Assis,

Lauro,

Pereira

et al. 2024

Preprint

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The sustainable machining is a delicate issue because it does not depend only on the environment aspects. A simple solution would be to remove the use of cutting fluids, however, in the machining of difficult-to-cut materials, the use of cutting fluid can be strongly recommended. In these materials, the high temperature during the cut can cause damages that compromise the component efficiency, likes cracks, microstructure, and others. In recent years, the micro-cutting has been employed to obtain more detailed components and/or great surface quality, regardless of dimensions. In this work, the orthogonal micro-cutting of commercially pure titanium was investigated, employing the dry condition and the use of cutting fluid at different temperature, room temperature and the cooled. To know the cutting fluids effects, forces, friction, specific cutting energy, chip compression, chip deformation, and shear plane angle was compared. These outcomes indicated that, under the test conditions, the use of cutting fluid, principally when cooled, had a negative effect on micro-cutting performance.

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Section: Introductionmentioning

confidence: 99%

A study on the temperature of cutting fluid in the micro-cutting of commercially pure titanium

Assis,

Lauro,

Pereira

et al. 2024

Preprint

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“…It is widely used in the manufacture of aircraft engine fans, compressor plates and blades, as well as various load-bearing beams, frames, joints and fasteners in aircraft structures. Because of its excellent properties, this alloy has been successfully applied not only in aerospace, but also in medical, chemical industry, petroleum, shipbuilding and other fields [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Influence of cutting velocity on surface roughness during the ultra-precision cutting of titanium alloys based on a comparison between simulation and experiment

Lou

Chen

et al. 2023

PLoS ONE

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The Ti-6Al-4V titanium alloy is a kind of light alloy material with high specific strength, corrosion resistance and heat resistance. Because of its excellent performance, it has become an important material in aerospace industry. However, this kind of alloy has very poor machinability, and rapid tool wear is a very serious problem in titanium alloy processing. At present, it is difficult to guarantee the ultra-precision machining quality of titanium alloy materials, which limits its application in high-tech fields. In order to solve this problem, the influence of cutting speed on ultra-precision cutting process of titanium alloy was analyzed comprehensively. and it was found that better surface quality could be obtained at lower cutting speed. In order to study the influence of cutting speed in ultra-precision cutting of titanium alloys, cutting experiments have been carried out. Additionally, a finite element model was established to analyze the ultra-precision cutting process. Also, the constitutive model, damage model, friction model, and heat transfer in the modeling process were discussed. The chip morphology, cutting temperature, cutting force, and surface morphology under different cutting velocities are analyzed by simulation. Then, the simulation results were compared with the experimental results. The findings show that cutting speed has great influence on the ultra-precision turning of the Ti-6Al-4V alloy and the surface roughness obtained by ultra-precision cutting of titanium alloy can be lower than 20 nm at a lower cutting speed.

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“…Titanium alloys are widely used in bio-medical, automotive, nuclear and aerospace industries due to their excellent mechanical properties, such as low density, high corrosion resistance, hardness and impact strength compared to other materials. [1][2][3] These alloys are specially used in the aeronautical industry for civil and military aircrafts as the main load-bearing components, such as pylon bracket or landing gear beam in the air frame. Also, titanium alloys have the ability to work at high temperatures while maintaining their mechanical properties so, making it a suitable material for the manufacture of the fan disc or the casing in the engine.…”

Section: Introductionmentioning

confidence: 99%

Cutting parameters influence on surface integrity of dry-turned Ti6Al4V alloy

Martín-Béjar,

Trujillo Vilches,

Herrera Fernández

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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Surface integrity is a high-interest characteristic of machined parts in the aeronautical industry. Numerous variables are related to the surface integrity and require to be studied as a whole. Generally, the cutting parameters affect these variables’ results, especially in sustainable machining operations. This work analyses the cutting speed and feed influence on different parameters such as the roughness, macrogeometrical deviations and microhardness of Ti6Al4 V turned in dry. All variables have been taken into account simultaneously, given the synergy between the different input and output variables. In general terms, feed seems to be the most influential variable in macrogeometrical and microgeometrical deviations, while cutting speed affects mainly the microhardness parameter. In addition, an optimisation process has been carried out. In the first step, the optimal cutting parameters were obtained for the lowest cutting speed and the lowest feed values due to the roughness is the predominant variable. Therefore, a second optimisation step was performed excluding this variable, optimising the macrogeometrical deviations and the microhardness. In this case, higher cutting speed and feed values seem to be the optimal cutting parameters. Finally, different decision maps were plotted to facilitate the cutting parameter selection according to the property to optimise.

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Morphological characterization of chip segmentation in Ti-6Al-7Nb machining: A novel method based on digital image processing

Cited by 12 publications

References 35 publications

A study on the temperature of cutting fluid in the micro-cutting of commercially pure titanium

A study on the temperature of cutting fluid in the micro-cutting of commercially pure titanium

Influence of cutting velocity on surface roughness during the ultra-precision cutting of titanium alloys based on a comparison between simulation and experiment

Cutting parameters influence on surface integrity of dry-turned Ti6Al4V alloy

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