Surface oxidation and phase transformation of the stainless steel by hybrid laser-waterjet impact

Weiss, Laurent; Aillerie, Michel; Tazibt, Abdel; Tidu, Albert

doi:10.1088/2053-1591/1/3/036501

Cited by 9 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The different oxides found in this study are the same than which were found in other type of high-energy cutting process like laser-water jet cutting [24] but their presence has not been explained accurately through temperatures analysis. The temperatures given in Fig.…”

Section: Oxides Detection By Raman Spectroscopy Up and Resultssupporting

confidence: 38%

Investigation and characterization of grinding burn on a nitrided steel

Lavisse

WEISS²,

KOKANYAN³

et al. 2022

Preprint

View full text Add to dashboard Cite

Grinding process may lead to the occurrence of grinding burn. Indeed, when the temperature in the grinding area gets too high, it may result in visible surface damages of the workpiece. Therefore, the aim of this present study was to fully characterize and to quantify changes in the material after a grinding burn on a nitrided steel. These microstructural changes were quantified under several grinding conditions (dry and wet). Depending upon whether the grinding process was gentle or abusive, residual stresses, crystallographic texture, and hardness measurements were done. Metallurgical and microstructural changes have been observed on the workpiece. Then the Raman spectroscopy was used as an original nondestructive method to detect, quantify and explain the chemistry and the appearance of grinding burn.

show abstract

Section: Oxides Detection By Raman Spectroscopy Up and Resultssupporting

confidence: 38%

Investigation and characterization of grinding burn on a nitrided steel

Lavisse

WEISS²,

KOKANYAN³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Excepted for the cutting speed now varying from 5 to 20 mm/min rated in steps of 1 m/min, the experimental parameters, instruments and machines are the same as those of our previous works, here being summarized, i.e. a Yb:YAG laser (wavelength = 1030 nm, spot size = 113µm, power = 400 W) ; water pumped at 1 MPa through a 0.25mm nozzle diameter [11]. The optimal cutting speed with small-oxidized zone and net shape quality cut is found to be equal to 11 m/min.…”

Section: Methodsmentioning

confidence: 99%

“…Due to this high applicative potential, in a previous paper, we have presented experimental results and interpretations of the structural changes and phase transformations during cutting of stainless steel with a coupled Laser Water Jet (LWJ) converging on the surface [11]. Using a 400 W laser, we have shown by different characterization techniques that due to the deposited energy, the reactivity of water molecules with the surface greatly increases, creating an exotic oxidation of the material.…”

Section: Introductionmentioning

confidence: 99%

“…The other characteristics of the X-Ray diffractometer are 0.027° (2θ) acquisition step with an acquisition time equal to 2 s, at 40 kV tension and 200 mA intensity collimated at 0.6 mm.The Raman spectrometer is a LabRam Aramis working with an excitation beam at 532 nm focuses with an objective x20 and the Scanning Electron Microscope is a Carl Zeiss model 40. These apparatus and associated parameters are the same as those of our previous work[11]. The samples were prepared using an etching with Kroll's reagent consisting of 2 ml of fluoridric acid, 3 ml of nitric acid and 95 ml of water.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Surface and microstructure modifications of Ti-6Al-4V titanium alloy cutting by a water jet/high power laser converging coupling

Weiss¹,

Tazibt²,

Aillerie³

et al. 2018

Mater. Res. Express

View full text Add to dashboard Cite

The metallurgical evolution of the Ti-6Al-4V samples is analyzed after an appropriate cutting using a converging water jet/high power laser system. New surface microstructures are obtained on the cutting edge as a result of thermo-mechanical effects of such hybrid fluid-jetlaser tool on the targeted material. The laser beam allows to melt and the water-jet to cool down and to evacuate the material upstream according to a controlled cutting process. The experimental results have shown that a rutile layer can be generated on the surface near the cutting zone. The recorded metallurgical effect is attributed to the chemical reaction between water molecules and titanium, where the laser thermal energy brought onto the surface plays the role of reaction activator. The width of the oxidized zone was found proportional to the cutting speed. During the reaction, hydrogen gas H 2 is formed and is absorbed by the metal. The hydrogen atoms trapped into the alloy change the metastable phase formation developing pure β circular grains as a skin at the kerf surface. This result is original so it would lead to innovative converging laser water jet process that could be used to increase the material properties especially for surface treatment, a key value of surface engineering and manufacturing chains.

show abstract

“…As shown in Figure 1, the Gaussian beam is focused to the center of the nozzle through a focusing mirror, and is fully reflected to the surface of the workpiece in a laminar water column to remove the workpiece. Water-jet guided laser technology has been widely used in the processing of difficult-to-machine materials such as composite materials and superalloys due to its high machining accuracy and small heat-affected zone [3][4][5] . When water-jet guided laser technology is used to process materials, its high-pressure water column can quickly remove the resulting melt, making the cutting efficiency high and the heat affected zone small.…”

Section: Introductionmentioning

confidence: 99%

Influence of laminar water column disturbance on laser energy transmission in water-jet guided laser

Long

Zhang

Guo

et al. 2022

Seventeenth National Conference on Laser Technology and Optoelectronics

View full text Add to dashboard Cite

Water jet-guided laser technology is an efficient processing technology that offers the advantages of a small heataffected zone and strong depth capability when processing a variety of difficult-to-process materials. However, the surface of the laminar water column can form irregular disturbances due to nozzle damage and other factors, ultimately leading to an uneven distribution of laser light intensity, causing a loss of laser power. In this paper, the relationship between the quality, morphology and coupling alignment errors of the water column on the optical transmission efficiency of water-guided lasers is investigated in depth with ray tracing method. Besides, the water column surface variable-angle prismatic disturbance model is established, considering the characteristics of the real water column to research the impact of the real situation relationship. The results show that the loss of laser energy is more severe as the complexity of the surface morphology of the water column increases. In addition, laser coupling alignment errors are studied. The results show that a circular distribution is formed in the water column when the alignment deviation occurs. Finally, the reasons affecting the laminar flow conditions are analyzed to provide theoretical support for efficient laminar coupled light transmission.

show abstract

Surface oxidation and phase transformation of the stainless steel by hybrid laser-waterjet impact

Cited by 9 publications

References 24 publications

Investigation and characterization of grinding burn on a nitrided steel

Investigation and characterization of grinding burn on a nitrided steel

Surface and microstructure modifications of Ti-6Al-4V titanium alloy cutting by a water jet/high power laser converging coupling

Influence of laminar water column disturbance on laser energy transmission in water-jet guided laser

Contact Info

Product

Resources

About