Effects of laser shock peening in different processes on fatigue life of 32CrNi steel

Wang, Yong; Wang, Xibin; Liu, Zhibing; Liu, Shuyao; Chen, Hui; Pan, Xiaoyu; Chen, Hongtao

doi:10.1016/j.msea.2020.139933

Cited by 17 publications

(8 citation statements)

References 38 publications

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“…The DCs subdivide into sub-grains with a further increase in the strain. In some cases, the formation of nanocrystalline grains is also possible [104,108,109]. Figure 10 shows the grain refinement mechanism of laser-peened Ti–6Al–4V alloy.…”

Section: Effect Of Laser Peening On Microstructural and Materials Pro...mentioning

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: Effect Of Laser Peening On Microstructural and Materials Pro...mentioning

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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“…This imbalance was the source of residual compressive stresses, which were confined to a thin layer. This compressive stress was balanced by the tensile residual stress extending beneath [30].…”

Section: Residual Stressesmentioning

confidence: 99%

Study of Surface Modifications of Textile Card Clothing (AISI 1065 Alloy) by Laser Shock Peening

Dhakshinamoorthy,

Harihara Subramanian,

Kannan

et al. 2023

Materials

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AISI 1065 is a carbon steels that is widely used in manufacturing industrial components owing to its high tensile strength and wear resistance. One of the major applications of such high-carbon steels is the manufacturing of multipoint cutting tools for materials such as metallic card clothing. The quality of the yarn is determined by the transfer efficiency of the doffer wire, which depends on its saw tooth geometry. The life and efficiency of the doffer wire depends on its hardness, sharpness, and wear resistance. This study focuses on the output of laser shock peening on the surface of the cutting edge of samples without an ablative layer. The obtained microstructure is bainite, which is composed of finely dispersed carbides in the ferrite matrix. The ablative layer induces 11.2 MPa more surface compressive residual stress. The sacrificial layer acts as a thermal protectant by decreasing surface roughness to 30.5%. The sample with a protective layer has a value of 216 HV, which is 11.2% greater than that of the unpeened sample.

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“…As a frontal surface strengthening technology, laser shock peening reduces the growth rate of fatigue cracks by introducing high residual compressive stress [24,25]. Moreover, it improves the fatigue life of metals by enhancing their surface integrity [26]. For example, Li X. et al [27] found that the residual compressive stress induced by laser shock peening suppressed the initiation of cracks by reducing the effective stress intensity factor and improved the fatigue performance of U75VG steel track welded joints.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Shock Peening on the Fatigue Life of 1Cr12Ni3Mo2VN Steel for Steam Turbine Blades

Tang,

Gao,

et al. 2023

Coatings

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In the present study, laser shock peening (LSP) was employed to enhance the rotating bending fatigue life of 1Cr12Ni3Mo2VN martensitic stainless steel used in steam turbine blades, addressing the issue of insufficient fatigue performance in these components. The aim of this study was to investigate the effect of LSP on the microhardness, residual stress, and rotating bending fatigue life of 1Cr12Ni3Mo2VN steel samples. The microhardness of LSP-treated samples was increased by 10.5% (LSP-3J sample) and 15.3% (LSP-4J sample), respectively, compared to high-frequency hardening samples. The residual compressive stress of the LSP-4J sample was the largest, reaching −689 MPa, and the affected layer depth was about 800 μm. Fatigue tests showed that the number of cycles at the fracture point for the LSP-3J and LSP-4J samples increased by 163% and 233%, respectively. The fatigue fracture morphology of the four samples showed that the microhardness and residual compressive stress distribution introduced by LSP could effectively inhibit the initiation of surface cracks, slow down the crack growth rate, and improve the rotating bending fatigue life of 1Cr12Ni3Mo2VN.

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Effects of laser shock peening in different processes on fatigue life of 32CrNi steel

Cited by 17 publications

References 38 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

Study of Surface Modifications of Textile Card Clothing (AISI 1065 Alloy) by Laser Shock Peening

Effect of Laser Shock Peening on the Fatigue Life of 1Cr12Ni3Mo2VN Steel for Steam Turbine Blades

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