Experimental Study on Cutting Forces and Surface Integrity in High-Speed Side Milling of<i>Ti-6Al-4V</i>Titanium Alloy

Wang, Fuzeng; Zhao, Jun; Li, Anhai; Zhao, Jiabang

doi:10.1080/10910344.2014.926690

Cited by 43 publications

(14 citation statements)

References 16 publications

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“…Additionally, the Cut-list nozzles were designed and manufactured based on the geometry of the Webster round coherent nozzle [30]. Unlike the traditional sloped nozzle, the internal curving geometry of the coherent nozzle can generate a coherent jet stream to provide low dispersion and minimum entrained air within the jet [31]. These unique features enhance the penetrability of Cutlist during the cutting process.…”

Section: Design Of the New Controlled Cutting Fluid Impinging Supply mentioning

confidence: 99%

Analysis of Microstructure and Chip Formation When Machining Ti-6Al-4V

Shyha

Gariani

El‐Sayed

et al. 2018

Metals

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Microstructure and chip formation were evaluated during the step shoulder down-milling of Ti-6Al-4V using a water-miscible vegetable oil-based cutting fluid. Experiments were conducted using the Cut-list fluid supply system previous developed by the authors and a conventional cutting fluid supply system. A thin plastically deformed layer below the machined surface was observed during the metallurgical investigation of the surfaces produced using both systems. Despite noticeable reductions in cutting fluid consumption achieved by Cut-list, no significant disparity was found in microstructural damage. The microstructure of the machined surfaces was strongly affected by cutting speed and fluid flow rate with a discontinuous serrated chip being the principal type. However, increases in cutting fluid flow rate associated with increased cutting speed significantly changed chip morphology where average distance between chip segments increased with cutting speed. Cut-list produced smaller saw-tooth height and larger segmented width, while the transition from aperiodic to periodic serrated chip formation was governed by cutting speed and feed rate. Chip segmentation frequency and shear angle were also sensitive to cutting speed.

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Section: Design Of the New Controlled Cutting Fluid Impinging Supply mentioning

confidence: 99%

Analysis of Microstructure and Chip Formation When Machining Ti-6Al-4V

Shyha

Gariani

El‐Sayed

et al. 2018

Metals

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“…Finally, the magnitude of the cutting forces during is a critical factor when selecting machining parameters. The increasing of the cutting forces causes more deformation in depth, resulting in hardness increase [23,24].…”

Section: Quantification Of Affected Machined Layersmentioning

confidence: 99%

Accurate determination of damaged subsurface layers in machined Inconel 718

Touazine

Jahazi

Bocher

2016

Int J Adv Manuf Technol

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The machining of high strength materials used in aeronautical applications generates damage on the subsurface layer which can significantly affect the fatigue life of the machined components. It is then important to distinguish between the damages due to machining from those caused by mechanical polishing operations used for sample observation. In this study, a new method is proposed to characterize and quantify properly the affected layer by machining and eliminate the impact from the defects originated during mechanical polishing. A protective layer of nickel coating was deposited on the machined surface. An optimum thickness of 100 µm was determined for the nickel layer to avoid any damage to the subsurface layer during sample preparation. The subsurface layer was analyzed using an automatic Knoop microhardness machine, laser-digital microscope and Electron BackScatter Diffraction (EBSD) microscopy.

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“…However a small number of research works were focused on machinability along with metallurgical changes in the milling oper-ation. [3][4][5] Literature revealed that less significant work studied the relationship between the machining parameters and the surface integrity for aluminium alloys. 6,7 The material-removal process increases the temperature in the machining region, which causes the combined effects of severe plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

“…It has been observed that the microhardness improved due to work-hardening effects and certainly microhardness decreases due to thermal softening effects during the machining process. 12 Inspected abrasion and adhesion wear on the machined surface via a scanning electron microscope during the milling of aluminium, and also it has been found that re-deposited workpiece material on the machined surface, which reduces the quality of machined components. 13 SEM micrographs revealed that the appropriate selection of the cutting parameters reduces the surface damage, like deformation feed marks, tearing surface and formation of chip layer on the milled surface.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the microhardness and surface roughness of a pressure-die-casted A413 alloy on milling using the desirability approach

Raghunayagan¹,

Murugarajan²

2019

Mater. Tehnol.

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This research, focused on a newly casted A413 diesel-engine-head aluminium alloy produced under optimal casting conditions by pressure die casting, is also used for a machinability characteristics study. The experiments were methodically conducted based on a central composite face-centred design of the response surface methodology to understand the influence of milling process parameters such as cutting speed (m/min), feed rate (mm/tooth) and depth of cut (mm) on the microhardness (HV) and surface roughness (μm). The significance of the responses was validated using the analysis of variance. Multi-objective optimization using the desirability function was adopted to optimize the process parameters that simultaneously maximize the microhardness and minimize the surface roughness. The scanning electron microscopy (SEM) of the machined surface results shows that there is certain surface damage that reduces the quality of final surface components, such as scratches, feed line damage and inclusion of the tool material. Corresponding to the highest desirability, the optimal values of the process parameters were found to be 215.644 m/min for the cutting speed, 0.230 mm/tooth for the feed rate and 1.043 mm for the depth of cut.

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Experimental Study on Cutting Forces and Surface Integrity in High-Speed Side Milling ofTi-6Al-4VTitanium Alloy

Cited by 43 publications

References 16 publications

Analysis of Microstructure and Chip Formation When Machining Ti-6Al-4V

Analysis of Microstructure and Chip Formation When Machining Ti-6Al-4V

Accurate determination of damaged subsurface layers in machined Inconel 718

Experimental investigation of the microhardness and surface roughness of a pressure-die-casted A413 alloy on milling using the desirability approach

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