Analysis of the effects of controlled shot peening on fatigue damage of high strength aluminium alloys

Curtis, Sean A.; Rios, E. R. de los; Rodopoulos, C. A.; Levers, Andrew

doi:10.1016/s0142-1123(02)00049-x

Cited by 118 publications

(48 citation statements)

References 20 publications

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“…The plastic deformation is associated with an indentation process arising from physical impingement and/or shockwaves from the surface treatment. The interplay between the residual stress field, the plastic strain and associated surface roughening from the process determines the effectiveness of the treatment [2]. Peening is the most common means of surface stress engineering to prolong life.…”

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confidence: 99%

Engineering the residual stress state and microstructure of stainless steel with mechanical surface treatments

et al. 2010

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Four mechanical surface treatments have been considered for the application to austenitic stainless steel structures. Shot peening (SP), laser shock peening (LSP), ultrasonic impact treatment (UIT) and water jet cavitation peening (WJCP), also known as cavitation shotless peening (CSP), have been applied to 8 mm thick Type 304 austenitic stainless steel coupons. This study considers the merits of each of these mechanical surface treatments in terms of their effect on the surface roughness, microstructure, level of plastic work and through thickness residual stress distribution. Microstructural studies have revealed the formation of martensite close to the treated surface for each process. Residual stress measurements in the samples show compressive stresses to a significantly greater depth for the LSP, UIT and WJCP samples compared to the more conventional SP treated sample.

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confidence: 99%

Engineering the residual stress state and microstructure of stainless steel with mechanical surface treatments

et al. 2010

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“…Because of the shot peening, there was residual compressive stress in the surface, which slowed down the surface fatigue crack growth rate of the specimen. S Curtis et al 22 studied effect residual compressive stress and surface roughness on the rate of crack propagation control law after shot peening processing, so effectively control the shot peening can improve the fatigue life of component.…”

Section: Introductionmentioning

confidence: 99%

Surface integrity and fatigue analysis of shot-peening for 7055 aluminum alloy under different high-speed milling conditions

Yao

Dou

et al. 2016

Advances in Mechanical Engineering

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To study the effect of different milled surfaces on shot peening surface integrity (roughness, residual stress, hardness, and microstructure), research on the change of surface integrity is carried out using the same shot peening process for different milling surfaces of 7055-T77 aluminum alloy. Surface integrity measurements, fatigue fracture analysis, and fatigue life tests are conducted to reveal the effect of surface integrity on crack initiation and fatigue life. The results show that shot peening can reduce the dispersion and instability of surface integrity brought by milling processing, although it increases the surface roughness; the maximum residual compressive stress and depth of residual stress layer increase significantly after shot peening, and the residual stress and hardening distribution are very good; larger surface roughness and irregular surface scratches of milling samples before shot peening easily lead to cracks and gouges produced on shot peening surface.

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“…Studies carried out by [11][12][13][14][15] indicate that the SP process generates compressive stresses. Research carried out by Benedetti M., Fontanari V. using alloy AA7050-T7451 has shown that the diameter of shot used does not significantly affect the amount of residual stresses.…”

Section: Introductionmentioning

confidence: 99%

“…As in the case of pressure, the impact of the angle of attack of the processing material on the range of stresses is variable. Research carried out by Jianming W., Feihong L. and Meguid S.A. indicates that cyclical stress of 300 MPa results an over 10-fold increase of the fatigue limit in comparison to other conventional process forming techniques that generate compressive stress [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Synergy of the Plastic Treatment HPT and Shot Peening in Aluminium Alloy Al-Mg-Mn-Sc-Zr

Stegliński

Byczkowska

Sawicki

et al. 2016

Archives of Metallurgy and Materials

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An improvement in fatigue strength is one of the main factors enabling the use of high-durability Al-Mg-Mn-Sc-Zr alloys in functional components of mobile robots. As part of this study, a computer simulation was carried out using ANSYS LS-DYNA software that involved the hybridization of high pressure torsion (HPT) and shot peening (SP) forming processes. The numerical analysis was aimed at determining residual stresses and strains that affect the durability and stress characteristics of the analyzed Al alloy. Results of the study indicate that tensile stresses of σ = 300 MPa generated as a result of HPT are transformed into a beneficial stress of σ = 25 MPa resulting from plastic strains caused by SP surface treatment.

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Analysis of the effects of controlled shot peening on fatigue damage of high strength aluminium alloys

Cited by 118 publications

References 20 publications

Engineering the residual stress state and microstructure of stainless steel with mechanical surface treatments

Engineering the residual stress state and microstructure of stainless steel with mechanical surface treatments

Surface integrity and fatigue analysis of shot-peening for 7055 aluminum alloy under different high-speed milling conditions

Synergy of the Plastic Treatment HPT and Shot Peening in Aluminium Alloy Al-Mg-Mn-Sc-Zr

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