Effects of water jet peening on residual stresses, roughness, and fatigue

Mahmoudi, A.H.; Jamali, Adil; Salahi, F.; Khajeian, A.

doi:10.1080/02670844.2020.1850196

Cited by 16 publications

(8 citation statements)

References 19 publications

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“…However, the lower water pressures may result in less abrasive particle bombardment on the H13 steel surface than the higher water pressure due to a weaker flow rate, which is significant to surface roughness findings. Thus, excessive or insufficient pressures caused lower compressive residual stress on the surface [24]. In previous research, the hardness properties of water jet shot-peened for Nickel surface ranged from 120 HV to 186 HV [25], while stainless steel was 192 HV [26].…”

Section: Hardness Propertiesmentioning

confidence: 93%

“…However, at 310 MPa pressure, the water flow bombardment on the surface overcame the impact of the abrasive particles compared to the surface peened at 241 MPa pressure. Additionally, the high water pressure reduced residual stress formation significantly [24]. Meanwhile, increasing feed rate at a constant water pressure increased surface roughness.…”

Section: Topography Analysismentioning

confidence: 95%

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Mechanical characterisation of water-jet shot peened H13 tool steel surface

Anati

Aqida²,

Ismail³

et al. 2022

JMES

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A wear-resistant surface is achievable via the surface treatment of various sources such as laser, water-jet, ion beam, and plasma. This paper investigates the parameters of water-jet shot-peened H13 tool steel for minimum surface roughness and maximum hardness properties. Water jet processing parameters are significant in determining the surface roughness as well as hardness properties. Water-jet shot-peened (WJSP) was used in this experiment to improve the surface properties of H13 tool steel. The parameters are pressure and feed rate of 172 MPa to 310 MPa and 2600 mm/min to 10000 mm/min. The shot-peened samples were characterised for surface topography, surface roughness, and hardness properties. A laser confocal microscope was used to determine the dimension of the modified surface from shot peening and average surface roughness. Hardness properties were measured using the Vickers scale. From topography analysis, the surface roughness reading on the shot-peened surface was measured as much as 6.88 µm to 14.06 µm. Minimum surface roughness measured was 6.88 µm on sample processed at pressure and feed rate 172 MPa and 2600 mm/min. The hardness properties of the shot-peened subsurface were between 196 HV and 227 HV. The resulted hardness properties were due to plastic deformation from abrasive particle bombardment during shot peening. The findings are important to designing enhanced surface properties for mould and die applications.

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Section: Hardness Propertiesmentioning

confidence: 93%

Section: Topography Analysismentioning

confidence: 95%

Mechanical characterisation of water-jet shot peened H13 tool steel surface

Anati

Aqida²,

Ismail³

et al. 2022

JMES

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“…Successful fatigue enhancement depends on a compromise between the CRS and the detrimental effect on surface quality [ 19 ]. Advanced shot peening technologies, such as laser [ 20 , 21 ], ultrasonic [ 22 , 23 ], and waterjet peening [ 24 , 25 ], are employed to reduce the irregularity and upgrade the fatigue life of Al alloys. It is noted that shot peening can mitigate the harmful effect of an anodized coating on the fatigue strength of high-strength Al alloys [ 13 , 21 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Micro-Shot Peening on the Fatigue Strength of Anodized 7075-T6 Alloy

Chen

Ding³

et al. 2023

Materials

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Micro-shot peening under two Almen intensities was performed to increase the fatigue endurance limit of anodized AA 7075 alloy in T6 condition. Compressive residual stress (CRS) and a nano-grained structure were present in the outermost as-peened layer. Microcracks in the anodized layer obviously abbreviated the fatigue strength/life of the substrate. The endurance limit of the anodized AA 7075 was lowered to less than 200 MPa. By contrast, micro-shot peening increased the endurance limit of the anodized AA 7075 to above that of the substrate (about 300 MPa). Without anodization, the fatigue strength of the high peened (HP) specimen fluctuated; this was the result of high surface roughness of the specimen, as compared to that of the low peened (LP) one. Pickling before anodizing was found to erode the outermost peened layer, which caused a decrease in the positive effect of peening. After anodization, the HP sample had a greater fatigue strength/endurance limit than that of the LP one. The fracture appearance of an anodized fatigued sample showed an observable ring of brittle fracture. Fatigue cracks present in the brittle coating propagated directly into the substrate, significantly damaging the fatigue performance of the anodized sample. The CRS and the nano-grained structure beneath the anodized layer accounted for a noticeable increase in resistance to fatigue failure of the anodized micro-shot peened specimen.

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“…However, poor surface integrity, formation of contaminants, heat generation hinder the use of these processes in biomaterials [18]. Amongst different unconventional processes, Water jet machining is the promising method for surface modi cation [19], imparting compressive residual stress [20] in the surface and sub-surface layers for enhancing the fatigue life of material with generation of smaller heat while peening that helps achievement of the desired surface characteristics without affecting the chemical composition of the material. He et al [1] and Salko [19] have indicated water jet as having potential for improving fatigue strength and removal of residual stress that occur equivalent to the shot peening.…”

Section: Introductionmentioning

confidence: 99%

“…Continuous impingement of high velocity water droplets on the material surface may result in the development of a higher axial dynamic pressure compared to the LaserJet peening operation due to higher kinetic energy of water jet coming out of the ori ce restricting micro cracks on the subsurface of a metal which promotes grain re nement and generate compressive residual stress by localized plastic deformation on the neighbouring surface of the material which improves fatigue strength. Although, many input parameters like standoff distance, water jet pressure, traverse speed, nozzle radius, type of nozzle are involved in the peening process, while control over the input parameters [20] [26] has a predominant role in getting the desired output responses for selected applications.…”

Section: Introductionmentioning

confidence: 99%

Investigations on Water Jet Peening of AZ31B Mg Alloy for Bio Medical Implants

Mohan

Muruganandhan

Natarajan

2021

Preprint

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Among different unconventional peening technique, water jet is cold working process has capable to produce surface topography on wide variety of materials. This paper deals with the effect of water jet peening on the corrosion resistance and the surface topography of AZ31B Mg alloy. Variations in water jet peening variables including standoff distance, traverse speed and multiple passes have been employed in this study. A study of the enhancement in hardening and roughening effect was made following the peening process. 29.44% Improvements in microhardness and 31.06% reduction in surface roughness were observed on the peened surfaces. Optimal peened surface was obtained through use of the multi-objective optimization technique, namely, TOPSIS, which utilizes response variables such as micro hardness and surface roughness. In this study, Surface Topography, XRD Analysis and Electrochemical test were conducted. In addition, analysis of the Microstructure of corroded region was made in the unpeened and optimized peened surfaces. Surface topography parameters including Sa, Sq, SSk, Sku results confirmed the suitability of the peened surface for ooseointegration and cell growth. FWHM value measured from XRD peaks showed the formation of grain refinement on the peened surface, and the results showed promising improvements in the corrosion resistance compared to the unpeened AZ31B Mg alloy.

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Effects of water jet peening on residual stresses, roughness, and fatigue

Cited by 16 publications

References 19 publications

Mechanical characterisation of water-jet shot peened H13 tool steel surface

Mechanical characterisation of water-jet shot peened H13 tool steel surface

Effects of Micro-Shot Peening on the Fatigue Strength of Anodized 7075-T6 Alloy

Investigations on Water Jet Peening of AZ31B Mg Alloy for Bio Medical Implants

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