Influence of combined shot peening and PEO treatment on corrosion fatigue behavior of 7A85 aluminum alloy

Ye, Zuoyan; Liu, Daoxin; Zhang, Xiaohua; Wu, Zhengyan; Long, Fei

doi:10.1016/j.apsusc.2019.04.242

Cited by 44 publications

(18 citation statements)

References 34 publications

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“…The study from various researchers has found that the PEO process reduces the fatigue working of aluminum alloys. To overcome this limitation, Ye et al [ 225 ] explored the synergism of a cold working treatment process and a hard coating to improve the fatigue resistance, wear, and corrosion resistance of a 7A85 Al alloy. This alloy is one of the most key materials required by the aviation industry.…”

Section: Applications Of Peomentioning

confidence: 99%

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

et al. 2021

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Plasma electrolytic oxidation (PEO) is a novel surface treatment process to produce thick, dense metal oxide coatings, especially on light metals, primarily to improve their wear and corrosion resistance. The coating manufactured from the PEO process is relatively superior to normal anodic oxidation. It is widely employed in the fields of mechanical, petrochemical, and biomedical industries, to name a few. Several investigations have been carried out to study the coating performance developed through the PEO process in the past. This review attempts to summarize and explain some of the fundamental aspects of the PEO process, mechanism of coating formation, the processing conditions that impact the process, the main characteristics of the process, the microstructures evolved in the coating, the mechanical and tribological properties of the coating, and the influence of environmental conditions on the coating process. Recently, the PEO process has also been employed to produce nanocomposite coatings by incorporating nanoparticles in the electrolyte. This review also narrates some of the recent developments in the field of nanocomposite coatings with examples and their applications. Additionally, some of the applications of the PEO coatings have been demonstrated. Moreover, the significance of the PEO process, its current trends, and its scope of future work are highlighted.

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Section: Applications Of Peomentioning

confidence: 99%

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

et al. 2021

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“…In following paragraphs, a literature review could be seen for fatigue properties of aluminum alloys [4][5][6][7][8][9][10][11][12][13] and aluminum-matrix composites [14][15][16][17]. In addition, some other articles [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] have been reviewed for corrosion-fatigue properties of aluminum alloys. Ueno et al [4] studied fatigue properties of Al-Si-Cu alloys in ambient air and vacuum environments.…”

Section: Introductionmentioning

confidence: 99%

“…They revealed that the corrosion potential of the process was greater, compared to milled surface of the material, due to act as a galvanic couple to an adjacent bulk surface. Ye et al [33] studied the effect of combined shot peening and the plasma electrolytic oxidation on the fatigue behavior of the 7A85 aluminum alloy in air and 3.5% NaCl solutions. Their results indicated that one surface treatment reduced the corrosion-fatigue lifetime.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Effects on High‐cycle Fatigue Lifetime and Fracture Behavior for Heat‐treated Aluminum‐matrix Nano‐clay‐composite Compared to Piston Aluminum Alloy

Aroo

Azadi

2021

Silicon

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In this research, the corrosion effect has been investigated on the high-cycle fatigue lifetime and the fracture behavior for the heat-treated aluminum-matrix nano-clay-composite and piston aluminum alloys. For this objective, after fabricating stir-casted nano-clay-composite, standard samples were machined and rotary bending fatigue tests were performed. To study the corrosion effect, some specimens were corroded in in the 0.00235% H 2 SO 4 solution after 200 hours and then, they were tested under cyclic bending loading. Due to increase in the hardness by adding nano-clay particles and the heat treatment, higher fatigue strength occurred, compared to the base material. Nano-clay particles shortened the fatigue lifetime; however, this effect was less in the corrosion-fatigue lifetime. Moreover, the failure mechanism was the brittle fracture behavior due to the observation of quasi-cleavage and cleavage marks.

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“…As a result, the Vickers hardness of the surface layer increased by 320 MPa (HV0.05) more than that of the core of specimens. The surface hardening is caused by plastic deformation due to surface compressive stress introduced by sandblasting [15][16][17][18][19]29]. It can be seen from the figure 3 that the surface compressive stress influencing layer has the depth of approximately 175 μm.…”

Section: Surface Roughness (Ra) Resultsmentioning

confidence: 99%

Effect of different surface conditions on fatigue properties of 7N01 aluminum alloy and the behavioral mechanism of crack of the alloy under alternating load

Chen

Cai

Deng

et al. 2020

Mater. Res. Express

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In this paper, the surface of 7N01 aluminum alloy profile is sandblasted or electropolished. The influence of different surface conditions on its conditional fatigue strength and fatigue mechanism under the alternating load after prefabricated short crack are studied. Results show that the 7N01 aluminum alloy with sandblasting treatment has formed a work hardened layer and its fatigue strength is increased by 42.9% comparing with the original surface specimens. The fatigue strength of the 7N01 aluminum alloy after electropolishing is almost unchanged compared with the original specimen. The fatigue behavior of the 7N01 aluminum alloy after prefabricated side straight through the notch deviated from the theoretical smooth specimen law and long crack propagation law in which is a 'shortage effect'. When the notch size is smaller than the transition crack size a 0 , the fatigue limit of the notched specimen is lower than the fatigue limit of the smooth specimen. When the notch size is larger than the transition crack size, the fatigue limit of the long-notched specimen is still lower than that predicted by linear elastic fracture mechanics. Due to the 'short notch effect', the effective notch propagation threshold ΔK eff.th of the long crack is 0.39 Mpa m 1/2 based on the effective notch propagation size a 0 eff of the alloy.

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Influence of combined shot peening and PEO treatment on corrosion fatigue behavior of 7A85 aluminum alloy

Cited by 44 publications

References 34 publications

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

Corrosion Effects on High‐cycle Fatigue Lifetime and Fracture Behavior for Heat‐treated Aluminum‐matrix Nano‐clay‐composite Compared to Piston Aluminum Alloy

Effect of different surface conditions on fatigue properties of 7N01 aluminum alloy and the behavioral mechanism of crack of the alloy under alternating load

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