Influence of laser shock peening pulse density and spot size on the surface integrity of X2NiCoMo18-9-5 maraging steel

Petan, Luca; Ocaña, J.L.; Grum, Janez

doi:10.1016/j.surfcoat.2016.08.088

Cited by 35 publications

(6 citation statements)

References 29 publications

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“…The interaction between laser beam size and material affected the propagation nature of the shock waves. Smaller-diameter shock waves probably expand like spheres with a higher attenuation rate than larger-diameter shock waves, which behave like planar fronts [15,16,24,25]. This phenomenon, together with a higher overlapping rate between laser spots, may explain our findings.…”

Section: Residual Stress Measurementsmentioning

confidence: 51%

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Fatigue Properties of Maraging Steel after Laser Peening

Petan

Grum

Porro

et al. 2019

Metals

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Maraging steels are precipitation hardening steels used for highly loaded components in aeronautical and tooling industry. They are subjected to thermomechanical loads and wear, which significantly shorten their service life. Improvements of their surface mechanical properties to overcome such phenomena are of great interest. The purpose of our research was to investigate the influence of pulse density and spot size of a laser shock peening (LSP) process on the surface integrity with the fatigue resistance of X2NiCoMo18-9-5 maraging steel. Surface integrity was analyzed through roughness, residual stress, and microhardness measurements. The tests performed on resonant testing machine confirmed LSP is a promising process for increasing fatigue resistance of a component. Fatigue crack occurs, when the resonance frequency decreases. This moment, when the fatigue crack initiation phase ends and the fatigue crack propagation phase starts, was chosen as the moment of failure. We have proved LSP is a successful method in improving fatigue resistance of maraging steel by appropriate combination of laser spot size and pulse density tested in our research.

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Section: Residual Stress Measurementsmentioning

confidence: 51%

“…Interactions of laser PD and SD have a significant influence on the hardness of an LSP-treated surface, found by a statistical analysis (ANOVA) (P < 0.0001) [25]. We fitted the measured values with the quadratic model.…”

Section: Microhardness Measurementsmentioning

confidence: 97%

Fatigue Properties of Maraging Steel after Laser Peening

Petan

Grum

Porro

et al. 2019

Metals

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“…Many of the previous reports [38][39][40], suggested that LSP increases the surface roughness with increasing laser energy and multiple impacts. In the meanwhile, surface topography and surface chemistry determine the wettability of materials.…”

Section: -Dimensional Topography and Surface Roughnessmentioning

confidence: 97%

Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peening

Shen

Shukla

Swanson

et al. 2019

Journal of Alloys and Compounds

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“…Petan et al [72] investigated the effect of spot diameter (circular spot of diameter 1.5, 2, 2.5 mm) on the residual stress distribution, and they found that the 2 mm diameter spot size samples show a better agreement with magnitude and depth of compressive residual stress irrespective of laser pulse density (900, 1600 and 2500 pulse cm -2 ). Kalentics et al [73] investigated 316L steel with varying the spot size of 1, 2 and 5 mm diameter and found that the smaller spot size leads to a higher magnitude of compressive stresses, whereas larger spot diameter leads to a deeper magnitude of CRS.…”

Section: Lsp and Processing Parametersmentioning

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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Influence of laser shock peening pulse density and spot size on the surface integrity of X2NiCoMo18-9-5 maraging steel

Cited by 35 publications

References 29 publications

Fatigue Properties of Maraging Steel after Laser Peening

Fatigue Properties of Maraging Steel after Laser Peening

Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peening

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

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