Surface layer strengthening mechanism of 2060 aluminum–lithium alloy after shot-peening

Wang, Ziyu; Xie, Li; Zhang, Qun; Ali, Raneen Abd; Chen, Wenliang; Zhou, Lijuan

doi:10.1016/j.jmrt.2023.02.064

Cited by 20 publications

(10 citation statements)

References 37 publications

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“…For the microstructural-strengthening mechanism, shot peening is a process that uses a stream of projectiles to continuously and repeatedly impact the surface of a component. This causes severe plastic deformation in the surface layer, leading to an optimization of the microstructure and refinement of the grain structure, while also increasing the density of dislocations and microstrains, as shown in Figure 8, where the dislocation density of its surface material would increase rapidly, and therefore, abundant dislocation substructures were formed [78]. In some cases, such as austenitic steels, shot peening can also induce a martensitic transformation, resulting in transformation strengthening.…”

Section: Shot Peening Strengthening Mechanismsmentioning

confidence: 99%

State of the Art and Perspectives on Surface-Strengthening Process and Associated Mechanisms by Shot Peening

et al. 2023

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Shot peening is a surface-strengthening process that is widely used in various industries, such as aerospace, automotive, and biomedical engineering. The process involves the impact of small, spherical media, called shots, onto the surface of a material, resulting in residual compressive stress and improved surface properties. This review aims to provide an overview of the state of the art and perspectives on surface strengthening by shot peening. The review covers various aspects of shot peening, including process parameters, shot materials, and quality control techniques. The advantages and limitations of shot peening in comparison to other surface-strengthening techniques are also discussed. The findings of this review indicate that shot peening is a versatile and effective surface-strengthening technique with numerous applications, and further research is needed to fully realize its potential. In conclusion, this review provides insights into the current status and future perspectives on surface strengthening by shot peening, and it is expected to be useful for researchers, engineers, and practitioners in the field of material science and engineering.

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Section: Shot Peening Strengthening Mechanismsmentioning

confidence: 99%

State of the Art and Perspectives on Surface-Strengthening Process and Associated Mechanisms by Shot Peening

et al. 2023

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“…In addition, poor fatigue resistance, low surface hardness and wear resistance are also insufficient for many requirements [3,7,8]. Therefore, additional surface protection of aluminium alloys is often essential and is usually achieved by various coatings applied on aluminium alloys [1,2,5] or other surface processing techniques, such as different methods of shot peening [4,[6][7][8][9][10][11][12][13][14] cavitation peening [15] and surface remelting [3,16].…”

Section: Introductionmentioning

confidence: 99%

“…results in a deeper affected layer with higher compressive residual stresses, but on the other hand, the surface roughness increases due to large-size particles at high velocity, which inevitably weakens the improvement of fatigue properties. Wang et al [10] applied a novel coupled constitutive model to reveal the influence of different shot sizes on the microstructure of 2060 Al-Li alloy. Their results show that a larger shot size significantly improves the depth of the dislocation density layer and the fine-grain layer of 2060 Al-Li alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shot Peening on the Strength and Corrosion Properties of EN AW 6082-T651 Aluminium Alloy

Ravnikar¹,

Šturm²,

Žagar³

2023

Preprint

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This paper investigates the effect of shot peening on the strength and corrosion properties of EN AW 6082-T651 aluminium alloy. Surface roughness, microhardness, residual stresses and corrosion performance were investigated and compared with the untreated aluminium alloy. Cracks and delaminations in the surface layer can only be seen on the treated specimens at a working pressure of 4 bar and 8 bar, while no such effect was observed at a working pressure of 1.6 bar. The effect of dislocation densification was confirmed by the microhardness measurement of the hardened layer, where microhardness increased by up to 23 % compared to the untreated aluminium alloy. Shot peening also results in a deeper layer with higher compressive residual stresses compared to untreated specimens. With higher working pressure, surface roughness increases, which can promote localized pitting corrosion. However, all treated specimens improve the corrosion resistance and have a lower degree of anodic dissolution. The current density of the shot peened specimen with the lowest surface roughness was more than twice lower than that of the untreated specimen.

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“…In addition, their poor fatigue resistance, low surface hardness, and poor wear resistance also make them inadequate for many requirements [ 3 , 7 , 8 ]. Therefore, the additional surface protection of aluminium alloys is often essential and is usually achieved by various coatings applied on aluminium alloys [ 1 , 2 , 5 ] or other surface processing techniques, such as different methods of shot peening [ 4 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ], cavitation peening [ 16 ], and surface remelting [ 3 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, conventional shot peening resulted in a deeper affected layer with higher compressive residual stresses, but on the other hand, the surface roughness increased due to large-size particles at a high velocity, which inevitably weakened the improvement of fatigue properties. Wang et al [ 10 ] applied a novel coupled constitutive model to study the effect of different shot sizes on the microstructure of a 2060 Al-Li alloy and reported that a larger shot size improved the depth of the dislocation density layer.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shot Peening on the Strength and Corrosion Properties of 6082-T651 Aluminium Alloy

2023

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This paper investigated the effect of shot peening on the strength and corrosion properties of 6082-T651 aluminium alloy. The microstructure, surface roughness, microhardness, residual stresses, and corrosion behaviour were investigated and compared with those of untreated aluminium alloy. Cracks and delaminations in the surface layer could only be seen on the treated specimens at a working pressure of 4 bar and 8 bar, while no such effect was observed at a working pressure of 1.6 bar. The surface roughness was increased more than 15 times after shot peening at a working pressure of 8 bar. Shot peening resulted in an increase in microhardness of 27% and a deeper layer with higher compressive residual stresses compared to the untreated specimens. All treated specimens exhibited improved corrosion resistance with a lower degree of anodic dissolution. The current density of the treated specimen with the lowest surface roughness was more than two-fold lower than that of the untreated specimen.

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Surface layer strengthening mechanism of 2060 aluminum–lithium alloy after shot-peening

Cited by 20 publications

References 37 publications

State of the Art and Perspectives on Surface-Strengthening Process and Associated Mechanisms by Shot Peening

State of the Art and Perspectives on Surface-Strengthening Process and Associated Mechanisms by Shot Peening

Effect of Shot Peening on the Strength and Corrosion Properties of EN AW 6082-T651 Aluminium Alloy

Effect of Shot Peening on the Strength and Corrosion Properties of 6082-T651 Aluminium Alloy

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