Progress on microstructure and residual stress evolution and corrosion behavior in SP-, LSP- and WJP-treated austenitic stainless steels

Ming, Tingyun; Peng, Qunjia; Han, Yaolei; Zhang, Tao

doi:10.1108/acmm-11-2022-2728

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…The compression or tensile deformation caused by it exceeds the elastic recovery ability of the material itself. The residual stress may cause irreversible bending or deformation of components (Ming et al, 2023). This may lead to the instability of the component size, and even cause the coordination between components, affecting the joint condition and connection quality of components.…”

Section: Residual Stress Analysismentioning

confidence: 99%

Preparation and mechanical properties of LC cladding layer for friction parts

Jiang

2024

Front. Mech. Eng.

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Introduction: In the actual engineering operation, there are some components facing high frequency friction, which have high damage rate and poor direct replacement benefit. In order to achieve sustainable resource utilization and more effective component remanufacturing, research was conducted on the cladding layer of friction components.Methods: Based on the idea of remanufacturing, taking 42CrMo as the raw material of engine piston pin hole, laser cladding technology and ultrasonic rolling technology are used to prepare the cladding layers of Fe, Ni and Co three different substrates.Results and Discussion: The experimental results showed that the Co based cladding layer with ultrasonic rolling technology performed best. The surface roughness reduced by 1.02 μm, only 0.14 μm. The microhardness increased by 101.39%, with 795.38 HV. The friction coefficient was 0.051. The friction rate at high temperature decreased by 85.71%, and it was 1.2%. The friction at high temperature was reduced by 79.24%, with 0.9%.Conclusion: Co based cladding layer combined with ultrasonic rolling technology shows the best performance, which can effectively realize the remanufacturing of engine piston pin hole, providing technical reference and data support for the remanufacturing process of high-frequency friction components.

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Section: Residual Stress Analysismentioning

confidence: 99%

Preparation and mechanical properties of LC cladding layer for friction parts

Jiang

2024

Front. Mech. Eng.

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“…Lastly, ultra precision shot peening enables online monitoring of part surfaces and real-time adjustment of machining parameters, ensuring machining quality. Several emerging shot peening technologies have gained traction, including laser shot peening [10][11][12], ultrasonic shot peening [13][14][15], and high-pressure water jet peening [16][17][18]. Nonetheless, certain aspects remain to be clarified, including the mechanism of SP strengthening and the impact of SP parameters on the surface properties, wear resistance, fatigue resistance, and corrosion resistance of the workpiece.…”

Section: Introductionmentioning

confidence: 99%

The effect of shot peening on the contact fatigue performance of C40 steel gears after laser surface melting

Lv,

Cui,

Sun

et al. 2024

Surf. Topogr.: Metrol. Prop.

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In this paper, shot peening (SP) was employed as a post-processing technique for the laser surface melted (LSMed) gear. The aim was to improve the contact fatigue performance of laser surface melting+shot peened (LSMSPed) gears. The microstructure, surface roughness, residual stress, microhardness of C40 steel gears before and after SP treatment were characterized using scanning electron microscopy, X-ray diffraction stress analyzer, contour measuring instrument, and hardness tester. Fatigue test of gear was carried out with a Forschungsstelle für Zahnräder und Getriebebau (FZG) testing machine. Following the laser surface melting (LSM) treatment, a molten layer was observed on the gear teeth surface. The experimental results indicated that SP induced a hardened layer with a certain thickness and plastic deformation on the surface of LSMed gears. Importantly, as the SP parameters increased, there's a corresponding reduction in both the average grain diameter and the maximum grain diameter. The reduction was most pronounced when the shot diameter reached its maximum value. It's worth noting that once the optimal threshold for SP parameters is surpassed, the residual compressive stress and microhardness on the LSMSPed gear surface do not exhibit a continuous growth trend. Furthermore, the rise in SP parameters resulted in a gradual increase in the surface roughness of LSMSPed gears, albeit to varying degrees. In light of the combined effects of grain refinement, residual compressive stress, microhardness, and surface roughness, the contact fatigue performance of LSMSPed gears improved with increasing SP parameters. Notably, when comparing the contact fatigue life of LSMed gears with that of LSMSPed gears, we observed a substantial enhancement. However, it's essential to highlight that when the shot diameter reaches its maximum value, the contact fatigue life of the LSMSPed gear, somewhat unexpectedly, decreased.

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Surface integrity of consecutive shot-peened additively manufactured 316L stainless steel

Haribaskar,

Sampath Kumar

2024

Materials and Manufacturing Processes

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Progress on microstructure and residual stress evolution and corrosion behavior in SP-, LSP- and WJP-treated austenitic stainless steels

Cited by 4 publications

References 33 publications

Preparation and mechanical properties of LC cladding layer for friction parts

Preparation and mechanical properties of LC cladding layer for friction parts

The effect of shot peening on the contact fatigue performance of C40 steel gears after laser surface melting

Surface integrity of consecutive shot-peened additively manufactured 316L stainless steel

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