Numerical Prediction of the Effect of Laser Shock Peening on Residual Stress and Fatigue Life of Ti-6Al-4V Titanium Alloy

Ouyang, Peixuan; Luo, Xiangang; Dong, Zhichao; Zhang, Shuting

doi:10.3390/ma15165503

Cited by 13 publications

(5 citation statements)

References 36 publications

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“…However, a recent research article reported a significant difference in the experimental and fatigue results of Ti-6Al-4V alloy. The author claims that disregarding surface properties in the simulation is the reason for the difference [195]. Hence, simulation considering all the physical phenomena related to peening has to be developed to increase the reliability of the simulation.…”

Section: Challenges and Future Aspectsmentioning

confidence: 99%

Laser shock peening: a promising tool for enhancing the aeroengine materials’ surface properties

Praveenkumar

Rajan

Swaroop

et al. 2023

Surface Engineering

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Laser shock peening (LSP) is a unique and efficient surface modification technique that surface engineers have commonly adopted to tailor metallic materials' surface and subsurface properties. The primary goal of this review paper is to highlight LSP as a surface modification technique for materials used in aeroengine, as this further ameliorates the commercialization of LSP in aeroengine sectors. The recent research articles focused on the application of LSP to improve the surface characteristics (i.e. surface residual stresses, hardness) and to resist the corresponding service challenges (i.e. fatigue, wear) of the aeroengine metallic material have been reviewed. In addition, a brief explanation of LSP and its controlling parameters is included. From the aeroengines perspective, challenges and future aspects for improving LSP application and commercialization are summarised based on the authors' experience and published literature.

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Section: Challenges and Future Aspectsmentioning

confidence: 99%

Laser shock peening: a promising tool for enhancing the aeroengine materials’ surface properties

Praveenkumar

Rajan

Swaroop

et al. 2023

Surface Engineering

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“…At the same time, many new or novel laser processing technologies utilizing laser are emerged, and these processing technologies have brought great changes to the engineering fields. Laser shock processing (LSP) is a novel mechanical surface-strengthening technology with excellent strengthening effect, controllability, and adaptability [7,8,19,20]. Compared with the common mechanical surface supporting technologies such as SP, URSS, USP and WJP, the adequate beneficial compressive residual stress layer depth induced by LSP treatment can reach over 1 mm.…”

Section: Introductionmentioning

confidence: 99%

Improving the Wear and Corrosion Resistance of Aeronautical Component Material by Laser Shock Processing: A Review

Lin

et al. 2023

Materials

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Since the extreme service conditions, the serious failure problems caused by wear and corrosion are often encountered in the service process for aeronautical components. Laser shock processing (LSP) is a novel surface-strengthening technology to modify microstructures and induce beneficial compressive residual stress on the near-surface layer of metallic materials, thereby enhancing mechanical performances. In this work, the fundamental mechanism of LSP was summarized in detail. Several typical cases of applying LSP treatment to improve aeronautical components’ wear and corrosion resistance were introduced. Since the stress effect generated by laser-induced plasma shock waves will lead to the gradient distribution of compressive residual stress, microhardness, and microstruture evolution. Due to the enhancement of microhardness and the introduction of beneficial compressive residual stress by LSP treatment, the wear resistance of aeronautical component materials is evidently improved. In addition, LSP can lead to grain refinement and crystal defect formation, which can increase the hot corrosion resistance of aeronautical component materials. This work will provide significant reference value and guiding significance for researchers to further explore the fundamental mechanism of LSP and the aspects of the aeronautical components’ wear and corrosion resistance extension.

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“…For gas turbines, the size of the impact object is usually on a millimeter scale, and the residual stress generated by the impact is not easy to measure in practice. Therefore, the use of an FOD numerical simulation method can be useful, as it can effectively describe the size and distribution of stress concentration [ 7 ], which is an effective method of studying the FOD damage law.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Materials on Residual Stress Fields of Blade Damaged by Foreign Objects

Yin

Liu

et al. 2023

Materials

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Foreign object damage (FOD) is a common mode of failure in high-speed rotating machinery, such as aircraft engines. Therefore, research on FOD is crucial for ensuring blade integrity. FOD induces residual stress on the surface and within the blade, impacting its fatigue strength and service life. Therefore, this paper utilizes material parameters determined by existing experiments, based on the Johnson–Cook (J-C) constitutive model, to numerically simulate impact damage inflicted on specimens, compare and analyze the residual stress distribution of impact pits, and investigate the influence law of foreign object characteristics on blade residual stress. TC4 titanium alloy, 2A12 aluminum alloy, and Q235 steel were selected as foreign objects, and dynamic numerical simulations of the blade impact process were performed to explore the effects of different types of metal foreign objects. This study analyzes the influence of different materials and foreign objects on the residual stress generated by blade impact through numerical simulation, examining the distribution of residual stress in different directions. The findings indicate that the generated residual stress increases with the density of the materials. Additionally, the geometry of the impact notch is also influenced by the density difference between the impact material and the blade. The distribution of the residual stress field reveals that the maximum residual tensile stress in the blade is related to the density ratio, and the residual tensile stress in the axial and circumferential direction is relatively large. It is important to note that a significant residual tensile stress has a detrimental effect on the fatigue strength.

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Numerical Prediction of the Effect of Laser Shock Peening on Residual Stress and Fatigue Life of Ti-6Al-4V Titanium Alloy

Cited by 13 publications

References 36 publications

Laser shock peening: a promising tool for enhancing the aeroengine materials’ surface properties

Laser shock peening: a promising tool for enhancing the aeroengine materials’ surface properties

Improving the Wear and Corrosion Resistance of Aeronautical Component Material by Laser Shock Processing: A Review

Effects of Different Materials on Residual Stress Fields of Blade Damaged by Foreign Objects

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