Experimental and numerical investigation of material heterogeneity in shot peened aluminium alloy AA2024-T351

Gariépy, Alexandre; Bridier, Florent; Hoseini, Majid; Bocher, Philippe; Perron, C.; Lévesque, Martin

doi:10.1016/j.surfcoat.2012.12.046

Cited by 46 publications

(33 citation statements)

References 41 publications

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“…It can be concluded from the EBSD analysis that the microstructural changes due to local LSP treatment are relatively moderate compared to those obtained in the study by Gariépy et al (2013) [4]. Gariépy et al (2013) [4] investigated the microstructural state of AA2024-T351 after it was shot peened using the EBSD analysis.…”

Section: Figure 2 Crystal Orientation Maps and Inverse Pole Figures mentioning

confidence: 89%

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Effects of laser shock peening on the microstructure and fatigue crack propagation behaviour of thin AA2024 specimens

Kashaev

Ventzke

Horstmann

et al. 2017

International Journal of Fatigue

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Section: Figure 2 Crystal Orientation Maps and Inverse Pole Figures mentioning

confidence: 89%

“…Gariépy et al (2013) [4] investigated the microstructural state of AA2024-T351 after it was shot peened using the EBSD analysis. The authors observed an unindexable structure in the first few micrometres with large dislocation densities and extremely small dislocation substructures.…”

Section: Figure 2 Crystal Orientation Maps and Inverse Pole Figures mentioning

confidence: 99%

Effects of laser shock peening on the microstructure and fatigue crack propagation behaviour of thin AA2024 specimens

Kashaev

Ventzke

Horstmann

et al. 2017

International Journal of Fatigue

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“…Numerical simulation of shot peening A single shot impact event was simulated with ABAQUS Explicit with the model developed by Gariepy et al [1,6]. The shot was modeled as an analytical rigid semi-sphere and its mass and rotary inertia were determined from its diameter based on an assumed density of 3850 kg/m 3 .…”

Section: Nanoindentationmentioning

confidence: 99%

“…Validating the accuracy of numerical predictions is a challenging task since the stress field resulting from shot peening is produced by a random and unpredictable shot impact sequence, and, as a result, is inhomogeneous at the scale of the impingements across the affected volume [5,6]. Consequently, it is very difficult to determine the correct initial parameters that would result in the exact same impact sequence to that obtained experimentally.…”

Section: Introductionmentioning

confidence: 99%

Residual stress near single shot peening impingements determined by nanoindentation and numerical simulations

et al. 2014

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The near-surface hardness and residual stresses resulting from a single shot peening impingement on aluminum alloy 2024-T351 were assessed by nanoindentation with spatial mapping of mechanical properties on cross sections through an impingement. For residual stress, a procedure was developed to couple nanoindentation experiments with numerical simulations for better understanding and predicting the effects of shot peening. A surface preparation method was developed that exposes the cross section of a single shot impingement for nanoindentation tests, while at the same time obtaining accurate measurements of the impingement dimensions. Starting parameters for the numerical simulation in terms of shot diameter and the shot velocity were selected to best match measurements of the impingement depth and diameter. The experimental results indicated that the greatest hardness was located at the nearest indent to the peened surface, whereas the maximum compressive residual stress was located sub-surface. When comparing experimental and numerical residual stresses, the experimental results showed a greater maximum compressive residual stress that was in closer proximity to the peened surface. Overall, residual stress fields compared between experimental and numerical results were similar, and differences could be explained in terms of the effect of strain hardening. The current work demonstrated the usefulness of coupling nanoindentation experiments with numerical simulations for evaluating the surface modifications resulting from a single shot peening impingement.

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“…This value is almost equal to the 0.2% proof stress of 2024-T351 aluminum alloy 26 and the values obtained using other peening methods such as nanosecond laser peening, shot peening, or ultrasonic peening. [27][28][29][30][31][32] The compressive stress decreases to zero around 90 lm, which is around one tenth of the peened depth obtained by nanosecond laser peening.…”

Section: Resultsmentioning

confidence: 99%

Femtosecond laser peening of 2024 aluminum alloy without a sacrificial overlay under atmospheric conditions

Sano¹,

Eimura²,

Kashiwabara³

et al. 2016

Journal of Laser Applications

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The authors have successfully performed femtosecond laser peening on a 2024 aluminum alloy without any sacrificial overlays. Laser pulses were directly irradiated to the surface of specimens in the air without water film as a plasma confinement medium during the peening treatment. The fatigue life was improved as much as 38 times in comparison with base material at a stress amplitude of 195 MPa. The fatigue strength of the peened specimen after 2 × 106 cycles was 58 MPa larger than that of the base material. The femtosecond laser peening process has a great potential to be applied in various fields where conventional peening methods cannot be used, as this process can be performed under ambient conditions without the use of a plasma confinement medium such as water or transparent materials.

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Experimental and numerical investigation of material heterogeneity in shot peened aluminium alloy AA2024-T351

Cited by 46 publications

References 41 publications

Effects of laser shock peening on the microstructure and fatigue crack propagation behaviour of thin AA2024 specimens

Effects of laser shock peening on the microstructure and fatigue crack propagation behaviour of thin AA2024 specimens

Residual stress near single shot peening impingements determined by nanoindentation and numerical simulations

Femtosecond laser peening of 2024 aluminum alloy without a sacrificial overlay under atmospheric conditions

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