Synergistic action of fatigue and corrosion during crack growth in the 2024 aluminium alloy

Menan, Frédéric; Hénaff, Gilbert

doi:10.1016/j.proeng.2010.03.156

Cited by 30 publications

(14 citation statements)

References 15 publications

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“…On peut donc penser que plus la fréquence est faible, plus les interactions en pointe de fissure entre le chargement mécanique et les réactions chimiques seront importantes et pourront augmenter les vitesses de propagation. Des essais réalisés sur l'alliage d'aluminium 2024-T351 en solution saline mettent en évidence un effet opposé [89]. Entre 10 et 0.1 Hz les vitesses de fissuration diminuent avec la fréquence (Figure 13a,b).…”

Section: Influence De La Fréquence Et De La Forme Du Signalunclassified

Influence de l'environnement sur la propagation des fissures de fatigue

Hénaff¹,

Menan²

2009

PlastOx 2007 - Mécanismes Et Mécanique Des Interactions Plasticité - Environnement

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Résumé. Cet article propose tout d'abord une revue des connaissances sur l'influence d'environnements gazeux, et en premier lieu de l'air ambiant, sur la propagation des fissures de fatigue dans les alliages métalliques. Des mises en évidence expérimentales des différentes formes d'interaction entre l'exposition à l'air et la propagation de fissure sont tout d'abord présentées. L'analyse de ces phénomènes est ensuite conduite en considérant deux mécanismes distincts : adsorption des molécules de vapeur puis rupture assistée par l'hydrogène en pointe de fissure. L'applicabilité de ces concepts au cas des milieux aqueux comme la nécessité de prendre en compte le caractère spécifique sont abordés dans une dernière partie.

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Section: Influence De La Fréquence Et De La Forme Du Signalunclassified

Influence de l'environnement sur la propagation des fissures de fatigue

Hénaff¹,

Menan²

2009

PlastOx 2007 - Mécanismes Et Mécanique Des Interactions Plasticité - Environnement

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“…e results showed a number of crack origins around the pits and the early expansion of fatigue crack was K I /K II mixed mode. Menan and Henaff [20] carried out corrosion fatigue tests on 2024 aluminum alloy in different corrosion environments. It was demonstrated that fatigue and corrosion had a synergistic effect on crack growth.…”

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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“…Corrosion and fatigue of car‐body aluminum alloys are mainly problems to the security and reliability of high‐speed train structures. Prediction on residual life has become far more complex, especially during the process of crack propagation . Previous results indicated that the corrosion fatigue crack growth in metallic materials can be schematically represented in three different ways which are corrosion‐fatigue type, stress corrosion‐fatigue type, and mixed‐type corrosion fatigue .…”

Section: Introductionmentioning

confidence: 99%

“…Prediction on residual life has become far more complex, especially during the process of crack propagation. [10] Previous results indicated that the corrosion fatigue crack growth in metallic materials can be schematically represented in three different ways which are corrosion-fatigue type, stress corrosion-fatigue type, and mixed-type corrosion fatigue. [11] Studies have shown that CFCP in aluminum alloy depends on many possible variables such as the type of load, stress ratio, mechanical parameters, environment and material factors.…”

Section: Introductionmentioning

confidence: 99%

Stress corrosion cracking and corrosion fatigue cracking behavior of A7N01P‐T4 aluminum alloy

Shen

Chen

et al. 2017

Materials & Corrosion

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A modified single edge notch tension (SENT) specimen exposed to saline environment was used to investigate the stress corrosion cracking and corrosion fatigue cracking behavior of A7N01P‐T4 aluminum alloy. The crack propagation rate was determined, the microstructure, crack growth path, and the fracture surfaces of specimens were examined by optical microscopy (OM) and scanning electron microscopy (SEM). The results showed that the stress corrosion cracking rate of A7N01P‐T4 alloy in 3.5% NaCl was three orders lower than that of corrosion fatigue crack propagation rate. Mg and Zn segregation at the grain boundaries increased the stress corrosion crack susceptibility. The grain orientation had a significant effect on the crack propagation performance, and the high angle grain boundaries were susceptible to cracking. Hydrogen embrittlement was the primary cause of stress corrosion crack and corrosion fatigue crack propagation.

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Synergistic action of fatigue and corrosion during crack growth in the 2024 aluminium alloy

Cited by 30 publications

References 15 publications

Influence de l'environnement sur la propagation des fissures de fatigue

Influence de l'environnement sur la propagation des fissures de fatigue

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

Stress corrosion cracking and corrosion fatigue cracking behavior of A7N01P‐T4 aluminum alloy

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