Coaxial water and air jet–assisted laser micromachining of titanium

Charee, Wisan; Qi, Huan; Zhu, Hao; Saetang, Viboon

doi:10.1007/s00170-022-09760-6

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Titanium alloys possess excellent properties, such as high specific strength, corrosion resistance, and low-temperature toughness, making them a preferred choice for key components in aerospace engines [1][2][3]. The use of titanium alloys not only effectively prolongs the service life of the parts but also reduces the weight of the parts due to their low density, leading to a reduction in fuel consumption and a significant decrease in costs, while improving flight performance [4][5][6]. However, as the performance requirements for aviation engines continue to increase, higher demands are placed on their materials and manufacturing techniques.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Effect of Cutting-Edge Shape Factor on the Cutting Performance of Titanium Alloy

You

Yuan

2023

Coatings

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Titanium alloys are extensively utilized in the aerospace industry due to their exceptional properties, encompassing high specific strength and corrosion resistance. Nevertheless, these alloys present inherent challenges as difficult-to-machine materials characterized by low thermal conductivity and high chemical reactivity. The machining of titanium alloys often gives rise to elevated cutting forces and temperatures, thereby resulting in compromised machining quality and substantial tool wear. This study explores the influence of the cutting-edge shape factor on tool performance and optimizes the cutting-edge structure through finite element simulation. Remarkably, the cutting performance of the tool demonstrates significant enhancement following cutting-edge passivation. Alterations in the geometric shape of the cutting-edge after passivation exert a notable impact on the tool’s cutting performance, with a superior performance observed for shape factor K > 1 compared to alternative edge structures. Additionally, numerical simulation is employed to analyze the influence of passivation values Sγ and Sα on cutting force and temperature, which are crucial factors affecting cutting performance. The results underscore the significant impact of Sγ on cutting force and temperature. Furthermore, within the confines of maintaining an identical shape factor K, the blade segment group featuring Sγ = 40 μm and Sα = 25 μm exhibits the lowest maximum cutting temperature, thereby indicating the optimal tool design attainable through this study.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation on the Effect of Cutting-Edge Shape Factor on the Cutting Performance of Titanium Alloy

You

Yuan

2023

Coatings

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Identifying the influence of bubble size and position on crater formation during underwater nanosecond laser ablation of stainless steel

2023

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Underwater laser ablation can be employed both as a means to produce nanoparticles and to texturize surfaces of various materials. In this approach, a stationary or flowing water layer above the target surface confines laser induced plasma which cools to form short lived cavitation bubbles, positively influencing the amount of removed material per laser pulse. Plasma and cavitation bubble evolution additionally give rise to bubbles which may persist in the water throughout the ablation process. These bubbles are known to have a detrimental effect on material removal rates particularly in stationary water, but the quantitative influence of bubble dimensions and position on removed material volume is currently unknown. Here we show the laser intensity profile changes induced by bubbles located at 0–0.4 Rayleigh lengths above a stainless steel surface and couple these changes to removed crater volume. Our results show that water flowing at Reynolds numbers in the range of 1–100 positively contribute to crater volumes for pulse frequencies up to 1 kHz. At 1 kHz, it was found bubbles have insufficient time to flow from the vicinity of the laser spot, regardless of the Reynolds number within the range investigated. These conclusions assist in selecting an appropriate combination of laser and flow conditions to optimize laser ablation material removal rate.

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Microstructural evolution, mechanical properties and surface quality of TC11 titanium alloy subjected to waterjet-assisted laser direct inscription

Wang¹,

Xu²,

Chen³

et al. 2023

Journal of Materials Research and Technology

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Coaxial water and air jet–assisted laser micromachining of titanium

Cited by 3 publications

References 19 publications

Numerical Investigation on the Effect of Cutting-Edge Shape Factor on the Cutting Performance of Titanium Alloy

Numerical Investigation on the Effect of Cutting-Edge Shape Factor on the Cutting Performance of Titanium Alloy

Identifying the influence of bubble size and position on crater formation during underwater nanosecond laser ablation of stainless steel

Microstructural evolution, mechanical properties and surface quality of TC11 titanium alloy subjected to waterjet-assisted laser direct inscription

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