Cutting force, chip formation, and tool wear during the laser-assisted machining a near-alpha titanium alloy BTi-6431S

Gao, Yanfeng; Wang, Gui; Bermingham, Michael; Dargusch, Matthew S.

doi:10.1007/s00170-015-6917-5

Cited by 28 publications

(11 citation statements)

References 19 publications

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“…Sun et al [76] and Dandenker et al [77] have reported significant improvement in tool life with laser assisted machining of Ti-6Al-4V alloy, while Bermingham et al [78,79] reported that temperature increase from thermal assistance of the laser enhanced diffusion induced tool wear, hence reducing the tool life during machining of Ti-6Al-4V. This was corroborated by the finding of Gao et al [80] during laser assisted machining of near alpha alloy. It was reported that laser assisted machining cannot significantly improve tool life during machining of BTi-6431 S. On the surface roughness of machined titanium parts, LAM effect has remained inconclusive as divergent results were obtained.…”

Section: Laser Assisted Machiningmentioning

confidence: 78%

“…Average reduction of cutting force was 31.96% in Ti-6Al-4V when laser power was observed with laser power of 1382 W while 16.95% reduction was reported for the same laser power in BTi-6431S near-alpha titanium alloy. Additionally, tool wear mechanism changed from flank wear in conventional machining to diffusion mechanism in laser assisted machining of both alloys [80].…”

Section: Laser Assisted Machiningmentioning

confidence: 99%

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An overview of conventional and non-conventional techniques for machining of titanium alloys

et al. 2020

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Machining is one of the major contributors to the high cost of titanium-based components. This is as a result of severe tool wear and high volume of waste generated from the workpiece. Research efforts seeking to reduce the cost of titanium alloys have explored the possibility of either eliminating machining as a processing step or optimising parameters for machining titanium alloys. Since the former is still at the infant stage, this article provides a review on the common machining techniques that were used for processing titanium-based components. These techniques are classified into two major categories based on the type of contact between the titanium workpiece and the tool. The two categories were dubbed conventional and non-conventional machining techniques. Most of the parameters that are associated with these techniques and their corresponding machinability indicators were presented. The common machinability indicators that are covered in this review include surface roughness, cutting forces, tool wear rate, chip formation and material removal rate. However, surface roughness, tool wear rate and metal removal rate were emphasised. The critical or optimum combination of parameters for achieving improved machinability was also highlighted. Some recommendations on future research directions are made.

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Section: Laser Assisted Machiningmentioning

confidence: 78%

Section: Laser Assisted Machiningmentioning

confidence: 99%

An overview of conventional and non-conventional techniques for machining of titanium alloys

et al. 2020

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“…The cutting tools are an important factor in enhancing the efficiency of machining operations. Therefore, many researchers' have been done to increase the life of cutting tools to meet industry requirements (Atlati et al (2015), Buchkremer et al (2015), Ducobu et al (2015), Fu et al (2016), Gao et al (2015), Zhu et al (2016)). Since experimental studies in the field of machining operation are costly, time-consuming and are limited so that, today researchers are using finite element methods as an efficient tool for their studies.…”

Section: Investigation Of High-speed Cryogenic Machining Based On Finmentioning

confidence: 99%

Investigation of High-Speed Cryogenic Machining Based on Finite Element Approach

Pashaki

Pouya

2017

Lat. Am. j. solids struct.

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“…The higher the laser power, the greater the reduction in cutting forces compared with conventional machining. Gao et al [12] conducted an interesting study regarding the machinability of near-alpha titanium alloy BTi-6431S compared with that of Ti-6Al-4V during laser-assisted milling. For the preheating of the BTi-6431S workpiece, temperature values of 200 • C and 300 • C were selected and experiments were conducted under various levels of cutting speed and feed rate.…”

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical aspects of cutting forces and tool wear in the laser-assisted turning of Ti-6Al-4V titanium alloy using AlTiN coated cutting tools

Habrat

Krupa

Markopoulos

et al. 2020

Int J Adv Manuf Technol

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Machining of hard-to-cut materials with conventional processes is still considered as a challenge, as the special properties of these materials often lead to rapid tool wear and reduced surface integrity. For that reason, it is preferable to combine conventional machining processes with other technologies in order to overcome the problems of machining these materials. In the present work, laser-assisted turning experiments on a Ti-6Al-4V workpiece were conducted using AlTiN coated cutting tools in order to investigate the effect of laser heating on cutting forces, cutting temperature, tool wear and microstructure alterations. Two series of experiments were performed under varying cutting speed, laser spot diameter and workpiece diameter values; the first series involved only laser heating of the workpiece and the second both laser heating and cutting. The findings revealed the effect of process parameters on cutting forces and temperature determining the importance of workpiece diameter size, indicated the formation of martensite phase at the top of the heat-affected zone of the workpiece and also showed that high temperatures can lead to intensive tool wear, instead of having a beneficial effect for the cutting tool. Finally, finite element (FE) simulations were carried out in order to study the time evolution of the temperature field and calculate the heating and cooling rates during the process. From the FE results, relatively high heating and cooling rates were observed for smaller workpiece diameters and lower cutting speed, whereas the high magnitude of these rates justified the creation of the martensite phase through a diffusionless transformation.

show abstract

Cutting force, chip formation, and tool wear during the laser-assisted machining a near-alpha titanium alloy BTi-6431S

Cited by 28 publications

References 19 publications

An overview of conventional and non-conventional techniques for machining of titanium alloys

An overview of conventional and non-conventional techniques for machining of titanium alloys

Investigation of High-Speed Cryogenic Machining Based on Finite Element Approach

Thermo-mechanical aspects of cutting forces and tool wear in the laser-assisted turning of Ti-6Al-4V titanium alloy using AlTiN coated cutting tools

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