The Reliability Life of 7B04 Aluminum Alloy under Alternate Action of Corrosion and Fatigue

Li, Changfan; He, Yuting; Feng, Yu; Wu, Liming; Zhang, Sheng

doi:10.1155/2016/3907420

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…In the past, due to the absence of outdoor fatigue test equipment, researchers have carried out a large number of coupling tests of environmental corrosion and fatigue load in laboratory environment in order to find out the coupling law and mechanism of environmental corrosion and fatigue load [4~5] . Li et al [6] used standard EXCO solution ( 234g/L NaCl + 50mL/L KNO3 + 6.5mL/L HNO3 ) to carry out corrosion and fatigue alternating test on 2A12-T4 aluminum alloy, and discussed its damage characteristics under the alternating action of corrosion and fatigue. Shen et al [7] carried out "3.5% NaCl corrosion environment system-fatigue load" synergistic test on 7475-T761 and LY12CZ aluminum alloys using self-made "environment box", and studied the effect of laboratory environment corrosion-fatigue load coupling on corrosion fatigue behavior of aluminum alloys.…”

Section: Introductionmentioning

confidence: 99%

Environmental Damage Behavior of 2A12 Aluminum Alloy under Coupling Action of Marine Atmospheric Environment and Tensile-Compressive Load

Luo

Wang

et al. 2022

MSF

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The coupling test of marine atmospheric environment and tensile-compressive fatigue load for 2A12 aluminum alloy was carried out in outdoor environment of Hainan station by coupling test equipment of mechanical load. The coupling effect of marine atmospheric environment corrosion and tensile-compressive fatigue load on the environmental damage behavior of 2A12 aluminum alloy was discussed from the aspects of corrosion morphology, tensile properties and fracture morphology. The results show that the corrosion characteristics of 2A12 aluminum alloy in coupling test and static exposure test are consistent. The corrosion depths of the static exposure test for 6 months and the coupling test for 35 days are 71 μm and 121 μm, respectively. The results of tensile properties show that the decrease rate of tensile properties of 2A12 aluminum alloy are accelerated by the coupling effect. And the accelerated ratio of the coupling test was more than 10 times that of the static exposure test. The fracture morphology shows that the coupling fracture crack of 2A12 aluminum alloy starts from the corrosion surface, and the crack source and propagation zone are quasi-cleavage fatigue crack propagation characteristics. The coupling test results are closer to the actual situation of equipment, which has important reference value for the design and material selection of bearing structure.

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Section: Introductionmentioning

confidence: 99%

Environmental Damage Behavior of 2A12 Aluminum Alloy under Coupling Action of Marine Atmospheric Environment and Tensile-Compressive Load

Luo

Wang

et al. 2022

MSF

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“…Menan and Henaff [28] discussed the influence of loading frequency and alternate mode on the corrosion fatigue crack growth. Li et al [29] used 7B04 aluminum alloy to carry out an alternate test of corrosion and fatigue with the purpose of investigating the reliability of life. Vucko et al [30] evaluated fatigue performance of joined assemblies in a corrosion environment with alternate corrosion fatigue mode.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alternate Corrosion and Fatigue on Fatigue Crack Growth Characterization of 2024-T4 Aluminum Alloy

Zhang

et al. 2020

Mathematical Problems in Engineering

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To investigate the effect of alternate corrosion and fatigue on fatigue crack growth characterization of 2024-T4 aluminum alloy, the pure fatigue test, “corrosion + fatigue” test (commonly known as pre-corrosion fatigue), and the “fatigue + corrosion + fatigue” alternating test of single-sided notched specimen of 2024-T4 aluminum alloy were carried out. The fatigue crack life of alternate corrosion and fatigue is longer than that of the pre-corrosion fatigue when the corrosion time is the same. And the more the times of alternating, the longer the crack growth life will be. This is mainly because the fatigue crack growth rate will change suddenly, which will have a certain hysteresis effect on the fatigue crack growth. The corrosion and fracture morphology characteristics of the alternate test were examined by scanning electron microscopy (SEM), and the composition of corrosion products was examined by the energy dispersion spectrum (EDS). The prediction model of fatigue crack growth rate considering the alternating hysteresis effect of corrosion and fatigue based on the Paris formula was established, and the parameters and precision of the model were calculated and verified. The results show that the model has certain engineering application value.

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Fatigue performances and reliability analysis of fatigue life for scarf-repaired composite laminates

Feng

Xie

et al. 2020

The Journal of Adhesion

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The Reliability Life of 7B04 Aluminum Alloy under Alternate Action of Corrosion and Fatigue

Cited by 3 publications

References 18 publications

Environmental Damage Behavior of 2A12 Aluminum Alloy under Coupling Action of Marine Atmospheric Environment and Tensile-Compressive Load

Environmental Damage Behavior of 2A12 Aluminum Alloy under Coupling Action of Marine Atmospheric Environment and Tensile-Compressive Load

Effect of Alternate Corrosion and Fatigue on Fatigue Crack Growth Characterization of 2024-T4 Aluminum Alloy

Fatigue performances and reliability analysis of fatigue life for scarf-repaired composite laminates

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