Mechanical and stress corrosion cracking behavior of welded 5059H116 alloy

Yadav, Rajesh; Kumar, Ankur; Chaudhari, G.P.; Paradkar, Archana

doi:10.1016/j.corsci.2022.110528

Cited by 12 publications

(1 citation statement)

References 49 publications

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“…Schwarzenbock et al [11] proposed the crack initiation mechanism of AA7085 dominated by hydrogen evolution in wet and dry air at 70 °C. The welding sample has higher stress corrosion sensitivity, the stress near the weld is more concentrated, and the welding-heat-affected zone promotes the corrosion fatigue crack initiation, which is more prone to cracking [12][13][14]. Zhu et al [15] studied the fatigue crack life rule of maraging steel.…”

Section: Introductionmentioning

confidence: 99%

The Initiation Characteristics of Corrosion Fatigue Crack in 18Ni (250) Steel

Pan,

Zhu,

Fang

2024

JMSE

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Maraging steel is the material of deep sea pressure equipment. The characteristics of corrosion fatigue crack initiation in 18Ni (250) were investigated by performing a tensile fatigue test under different loading conditions. The mechanism of corrosion fatigue crack initiation was analyzed considering the influence of welding. The results showed that the crack initiation life decreases with increasing load and increases with the stress ratio. In a corrosive seawater environment, crack initiation is affected by both mechanical damage and electrochemical corrosion. The proportion of the crack initiation life of the total sample life is approximately 71.45–99.55%, where the larger this proportion is, the smaller the fatigue zone is. Crack initiation and microcrack propagation in maraging steel correspond to the microfracture mechanism of dimple fractures. The microfracture mechanism is strongly affected by the presence of a weld but weakly affected by the weld position. The results of this study provide a theoretical basis for predicting the corrosion fatigue life of deep-sea submersible pressure hulls.

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Section: Introductionmentioning

confidence: 99%