The microstructure and cavitation erosion resistance of Ti6Al4V alloy treated by laser gas nitriding with scanning galvanometer

Wang, Ye; Yin, Yanyi; Wu, Guolong; Li, Lin; Yao, Jianhua; Zhang, Qunli

doi:10.1016/j.optlastec.2022.108270

Cited by 18 publications

(5 citation statements)

References 52 publications

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“…However, a minor decrease in hardness is found in the SMAO coating at 2.5 min (710.7 ± 15.9 HV). In fact, the hardness of the Ti6Al4V substrate is between 330 and 340 HV [39]. The hardness enhancement gives the substrate better wear resistance after SMAO treatment.…”

Section: Mechanical Evaluationmentioning

confidence: 99%

Growth characteristics of scanning micro-arc oxidation coating on Ti6Al4V alloy

Wang

Shen

et al. 2023

Surface Engineering

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In this study, the ceramic coating was prepared on Ti6Al4V alloy by scanning micro-arc oxidation (SMAO). The growth features of SMAO coating were investigated by combining the voltage and discharge variation. The result shows that a higher working voltage is obtained during SMAO treatment owing to additional resistance from the electrolyte column. As the SMAO goes on, the discharge region moves to the electrolyte column edge, exhibiting an annular shape. The current density with Gaussian distribution is observed between the stainless-steel tube (cathode) and titanium substrate (anode), which causes the SMAO coating to show a higher thickness in the middle and lower on both sides. Similar to traditional MAO, the SMAO coating has an enhancement in the thickness, pore size and Si content with increasing oxidation time, but coating degradation occurs in the later stage of SMAO. The SMAO coating mainly consists of amorphous SiO 2 , rutile and anatase phases.

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Section: Mechanical Evaluationmentioning

confidence: 99%

Growth characteristics of scanning micro-arc oxidation coating on Ti6Al4V alloy

Wang

Shen

et al. 2023

Surface Engineering

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“…This article refers to a large number of studies and patents, mainly related to the research and practical experience of different gas nitriding processes and also combined with relevant industry standards and technical guidelines [208][209][210][211][212][213][214][215][216]. Table 4 presents the technology readiness level, reference project status, and CO 2 emission reduction potential of different gas nitriding processes.…”

Section: -8 -mentioning

confidence: 99%

“…Technology readiness level, reference project status, and CO 2 mitigation potential of different gas nitriding process (adapted from refs [208][209][210][211][212][213][214][215][216]…”

mentioning

confidence: 99%

A Review—Effect of Accelerating Methods on Gas Nitriding: Accelerating Mechanism, Nitriding Behavior, and Techno-Economic Analysis

Zhou,

Xia,

Xie

et al. 2023

Coatings

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Gas nitriding, as a surface modification technology to improve the wear resistance of workpiece surfaces, is widely used in wind turbine gears, pressure vessel gears, high-precision die casting abrasives, and other areas. However, the gas nitriding time is too long, reaching 40–60 h, which reduces the efficiency of nitriding and hinders the development of gas nitriding. Therefore, various accelerating methods are born accordingly. This review first introduces the basic principle, microstructure, and process parameters of conventional gas nitriding. Then, five common accelerating methods are summarized: process parameter optimization, surface mechanical nano-crystallization, surface-active catalysis, surface pre-oxidation, and surface laser treatment. Then, the effect of acceleration methods on gas nitriding is analyzed for the acceleration mechanism, nitriding behavior, and nitriding efficiency. Finally, the technical economy of the acceleration methods is compared for three aspects: energy consumption, carbon dioxide emission, and cost. And, the technical maturity of the acceleration methods is compared according to technology readiness level (TRL) technology. Based on the above content, the advantages and disadvantages of the five accelerating methods are reviewed, and the concept of a multi-technology collaborative processing acceleration method is proposed.

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“…Since then, the LN technique has been used to treat a variety of alloys and metals, such as aluminum, stainless steel, iron, etc. As compared to other nitriding methods, the LN technique is obviously advantageous in terms of precise control, short tie, and easy configuration. , …”

Section: Introductionmentioning

confidence: 99%

“…As compared to other nitriding methods, the LN technique is obviously advantageous in terms of precise control, short tie, and easy configuration. 45,46 To synthesize AlN more accurately and conveniently, many researchers have used this novel and promising LN method to modify the aluminum surface. 1,22,47−49 However, most of the studies are experimental works focusing on the characterization of the samples after LN.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Rapid Nitriding of Aluminum via Pulsed Laser

Ran

Cheng

et al. 2023

Ind. Eng. Chem. Res.

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To better understand the mechanisms of pulsed laser-assisted synthesis of metal nitride, a numerical model was proposed to simulate the process of laser nitriding of aluminum. The model incorporated various multiphysical processes in the laser nitriding process, including heating, melting and vaporization of aluminum, formation of plasma plume, shielding of laser energy, ionization of nitrogen gas, and the transport of nitrogen in the chemically active state N* (N atoms and N+ ions) inside the aluminum. The simulated results are in good agreement with the existing experimental results in terms of laser intensity, laser impulse, N+ lifetime in plume, and nitrogen diffusion depth in aluminum. The model can well simulate the laser shielding process by plume and the nitriding process of aluminum. Characteristics of the plume expansion, plasma formation, nitrogen ionization, and diffusion were investigated systematically by the developed model. Investigations on the effects of key operating conditions show that the impact of laser wavelength is negligible, while the full-width at half-maximum (FWHM), nitrogen gas pressure, and laser intensity have a significant impact on the laser nitriding process of aluminum. The larger FWHM and larger laser intensity yield a layer with a higher N* concentration and greater thickness. The higher nitrogen gas pressure leads to an increase in N* concentration at the same position.

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The microstructure and cavitation erosion resistance of Ti6Al4V alloy treated by laser gas nitriding with scanning galvanometer

Cited by 18 publications

References 52 publications

Growth characteristics of scanning micro-arc oxidation coating on Ti6Al4V alloy

Growth characteristics of scanning micro-arc oxidation coating on Ti6Al4V alloy

A Review—Effect of Accelerating Methods on Gas Nitriding: Accelerating Mechanism, Nitriding Behavior, and Techno-Economic Analysis

Numerical Simulation of Rapid Nitriding of Aluminum via Pulsed Laser

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