Study on Effect of Laser Shock Peening as a Pre-Treatment on Fatigue Performance of Hard-Chorme Plated 15–5 PH Stainless Steel

Sundar, R.; Ganesh, P.; Maravi, Swati; Dwivedi, Pushpendra Kumar; Gupta, R. K.; Nagpure, D. C.; Ranganathan, K.; Chowdhury, Abhijit; Bindra, K. S.; Kaul, R.

doi:10.1007/s40516-019-0082-x

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…A total of 05 indentations in both directions was evaluated, and an average hardness graph was evaluated for both longitudinal and transverse directions to the deposition (Figure 5(a) and (b)). The average hardness value for longitudinal ranges between 37 and 41 HRC, which is the same as reported by Sundar et al 13,45 (Table 6). Along the transverse direction, an increase in average hardness value is observed.…”

Section: Hardness and Xrd Analysissupporting

confidence: 86%

Optimization of process parameters for direct energy deposition of 15Cr5Ni precipitation hardened stainless steel for aircraft parts repair and maintenance

Pandey

Srivastava

Narain

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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In the aerospace industry, regular maintenance and repair consume maximum cost and time. Direct energy deposition is an effective cutting edge repairing technology used in aircraft parts. This paper projected direct energy deposition as an important cladding technology. And as a cladding material, the acceptability of 15Cr5Ni precipitation-hardened steel is evaluated through single-layer deposition over 304 L stainless steel via direct energy deposition. 15Cr5Ni steel is a high-strength alloy mainly used for jigs, fasteners, and landing gears in the aerospace industry. Optimization of process parameters, that is, laser power, scan speed, and powder feed rate, is performed using response surface methodology through a prediction model along with a validation test. The microstructural investigation of clad cross-section and surface morphology followed by four-dimensional X-ray microscopy reveals an improved clad quality with minimized porosity and defects. A relative error of less than 5% has been found between the prediction model and experimental values, which validate the significance of optimized process parameters toward improving the clad quality for aircraft part repairing purposes.

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Section: Hardness and Xrd Analysissupporting

confidence: 86%

Optimization of process parameters for direct energy deposition of 15Cr5Ni precipitation hardened stainless steel for aircraft parts repair and maintenance

Pandey

Srivastava

Narain

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…However, the LSP cannot create enough compressive stress (less than 1 GPa) for SSEs, and sometimes, it may even lead to the introduction of tensile stress. [ 18,31 ] The ion exchange typically introduces compressive stresses by exchanging small ions (alkali or alkali‐earth ions) with larger ions, but only a few kinds of ions can be introduced. More importantly, monovalent ions, especially lithium ions, are much easier to be exchanged than others, which may lead to the reduction of ionic conductivity.…”

Section: Resultsmentioning

confidence: 99%

Xenon Ion Implantation Induced Surface Compressive Stress for Preventing Dendrite Penetration in Solid‐State Electrolytes

Yao

Olsson

Wang

et al. 2022

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Solid‐state electrolytes (SSEs) have been thrust into the limelight for the revival of energy‐dense lithium metal batteries, but still face the challenge of failure caused by the dendrite penetration. Mounting evidence indicates that dendrite penetration is related to the mechanical failure in SSEs, which calls for mechanical engineering to tackle this problem. This work reports a proof of concept that ion implantation induced surface compressive stress enables resistance in the dendrite penetration. A deterministic sequential multiple ion energies implantation is used to generate compressive stress, with implanted Xe ions distributed in a range of 160–600 Å from the surface. The symmetric lithium cells show that pellets with an implantation dose of 1013 Xe cm−2 exhibit stable stripping/plating cycles and extended lifespan, while a lower dose of 1012 Xe cm−2 cannot create sufficient stress to prevent dendrite penetration, and an excessive dose of 1014 Xe cm−2 leads to structural destruction and a decrease in stress. This improved performance is attributed to the induced surface compressive stress balanced over crystal grains, which is confirmed by grazing incidence diffraction techniques. The author's efforts demonstrate the usefulness of surface compressive stress to suppress dendrite penetration, offering more insight into rational stress–strain engineering as opposed to empirical optimization.

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“…Furthermore, the applications mentioned above were directly influenced by the LSP process. Recently, some of the processing operations involved in product realization such as plasma nitriding [5], hard facing [19], etc, are indirectly affected by LSP.…”

Section: Introductionmentioning

confidence: 99%

Effect of laser shock peening as a pretreatment on ion nitriding of precipitation hardened stainless steel

Yadav,

Duraiselvam

2023

Surf. Topogr.: Metrol. Prop.

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Laser shock peening (LSP) is emerging as an advanced technology to improve the fatigue life of engineering products. Also, this can improve wear and corrosion resistance as add-on benefits to the properties of the materials. In the present investigation, a systematic understanding of the hybrid surface treatment that combines LSP with ion nitriding, also known as plasma nitriding (PN) of precipitated hardened (PH) stainless steel was conducted to improve the effective case hardening layer. The effect of input parameters such as laser spot diameter, the number of superimposed layers, and overlap rate was investigated on the performance characteristics, which include surface morphology, microhardness, and the change in microstructure after the proposed treatment. The surface characterization results reveal that an 80% laser overlap rate modified the surface roughness of PN samples owing to higher surface roughness values induced by ablation during the LSP treatment. The microhardness and optical microscopy (OM) results revealed an increase in the effective hardening layer thickness of about 115% for a 40% overlap rate owing to the absence of blind spots. In addition, XRD analysis revealed the presence of Fe4N and CrN compounds on the surface of the PN samples. Scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) elemental mapping reveals the presence of a nitrogen-rich phase in the effective hardened layer and increased effective hardened layer thickness owing to grain refinement of LSP pre-processing.

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Study on Effect of Laser Shock Peening as a Pre-Treatment on Fatigue Performance of Hard-Chorme Plated 15–5 PH Stainless Steel

Cited by 13 publications

References 15 publications

Optimization of process parameters for direct energy deposition of 15Cr5Ni precipitation hardened stainless steel for aircraft parts repair and maintenance

Optimization of process parameters for direct energy deposition of 15Cr5Ni precipitation hardened stainless steel for aircraft parts repair and maintenance

Xenon Ion Implantation Induced Surface Compressive Stress for Preventing Dendrite Penetration in Solid‐State Electrolytes

Effect of laser shock peening as a pretreatment on ion nitriding of precipitation hardened stainless steel

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