Pit morphology characterization and corrosion fatigue crack nucleation analysis based on energy principle

Huang, Xiaoguang; Xu, Jian

doi:10.1111/j.1460-2695.2011.01654.x

Cited by 18 publications

(6 citation statements)

References 19 publications

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“…Through a large number of experiments, many scholars have studied different corrosion FCP mechanisms and proposed different corrosion FCP models, such as Paris model, superposition model, 38 competition model, 39 and crack propagation model based on energy conservation principle. 40 Among them, the Paris model is the most famous and widely used in engineering. In general, Paris law is often multiplied by an environmental correction term to construct the corrosion FCP rate formula.…”

Section: Mathematical Model Of Propagation Ratementioning

confidence: 99%

Effect of corrosion on the fatigue crack propagation properties of butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution

Han,

Li,

et al. 2023

Fatigue Fract Eng Mat Struct

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The corrosion fatigue crack propagation (FCP) of the butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution was investigated experimentally. Considering the influences of stress ratio and loading frequency, the corrosion FCP rate curve was obtained. The results indicated that the corrosion FCP rate in the corrosion environment is three times that in air. Increasing the stress ratio or decreasing the loading frequency will increase the corrosion FCP rate. The fracture morphology of the specimens in the corrosion environment had more corrosion pits and intergranular characteristics due to anodic dissolution than that in air. Anodic dissolution and hydrogen embrittlement jointly promoted the corrosion FCP of butt weld in simulated seawater. The corrosion FCP rate model was established considering the effects of stress ratio and loading frequency.

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Section: Mathematical Model Of Propagation Ratementioning

confidence: 99%

Effect of corrosion on the fatigue crack propagation properties of butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution

Han,

Li,

et al. 2023

Fatigue Fract Eng Mat Struct

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“…. (16) According to equation 4, the reduction of the effective cross-sectional area caused by the cyclic load can be described as follows:…”

Section: Programming Realization Of Materials Damage Modelmentioning

confidence: 99%

“…e CF failure is a coupling process of metal brittle fracture under periodic/ cycle or nonperiodic/random alternating load and corrosive media. Its essence is the interaction of the electrochemical corrosion process and mechanical process [15,16]. CF failure possesses many special characteristics.…”

Section: Introductionmentioning

confidence: 99%

Research on Corrosion Fatigue Performance and Multiple Fatigue Sources Fracture Process of Corroded Steel Wires

Wang

Zheng

2019

Advances in Civil Engineering

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Corrosion fatigue (CF) failure is one of the typical failure modes of high-strength steel wires for bridge cables because the cables are subjected to long-term fatigue loads and exposed to heavily polluted environment simultaneously. In this paper, a numerical simulation method was proposed to study CF performance of corroded high-strength steel wires. Firstly, the cellular automata (CA) method was used to generate a numerical model of corroded steel wires with corrosion pit, which can accurately describe the electrochemical process of metal corrosion. In the established CA model, three kinds of cells were involved, namely, metal cell, passive film cell, and corrosive medium cell. By setting 10 cellular transformation rules, morphology of the random corrosion pit on the steel wire surface was simulated. And then, a damage evolution model related to coupling of corrosivemedium and fatigue loads (CCF) was developed to describe the CF damage evolution process of steel wires. Subsequently, the damage evolution process was analyzed by ABAQUS with a user-defined material subroutine (UMAT). Finally, the life of corroded steel wires was predicted, and the CF performance of corroded steel wires with multiple corrosion pits was evaluated. The results show that the proposed method can reasonably describe the CF damage evolution process and illuminate the failure mechanism of steel wires subjected to the CCF. Damage of the steel wire with a single corrosion pit evolves gradually, and the damage evolution rate increases. For the steel wires with multiple corrosion pits, the corrosion pits affect mutually in the fracture process. When the angle and distance between corrosion pits reach a certain degree, the mutual effects can be ignored. With the same pit depth, the angle and distance among corrosion pits determine the CF life of steel wires mainly, and the number of corrosion pits affects slightly.

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“…In acidified solutions, the basic anodic reaction is metal dissolution and the cathodic reactions are oxygen and hydrogen reduction as a result of aluminum ion hydrolysis. 1 Several works, eg, Xiao-Guang and Jin-Quan, 2 Boag et al, 3 Abodi et al, 4 Boag et al, 5 Hughes et al, 6 Glenn et al, 7 Pidaparti and Patel, 8 and ASTM G46-94, 9 have been produced in the past years aiming to understand both, pitting initiation and the evolution of pitting corrosion in aeronautical aluminum alloys exposed to different corrosive environments. Most of these studies explore accelerated laboratory corrosion tests, which are usually designed to assess the corrosion susceptibility of the alloys in the corrosive environments under consideration.…”

Section: Introductionmentioning

confidence: 99%

Effect of environment's aggressiveness on the corrosion damage evolution and mechanical behavior of AA 2024‐T3

Vasco

Chamos

Pantelakis

2017

Fatigue Fract Eng Mat Struct

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The aim of this work is to contribute on establishing correlations between corrosion damage from accelerated laboratory corrosion tests of varying aggressiveness; by accounting for both, the metallographic features of corrosion damage and the mechanical properties of the corroded material. The work is based on the investigation of corrosion damage caused by the exposure of 2024‐T3 aluminum alloy to 3.5% NaCl solution, which is presently considered to properly represent in‐service exposure. Corrosion damage evolution was quantified for periods ranging between 500 and 3000 hours by evaluating pitting density, depth, and diameter. It was compared to available results of corrosion damage of the same alloy subjected to exfoliation corrosion test. Furthermore, the tensile properties of precorroded material in each solution were evaluated. The results allow the formulation of correlation functions between corrosion damage geometrical metallographic features from low‐ to high‐aggressiveness environment exposures. On the other hand, the degradation of tensile properties, and particularly of tensile ductility, is more pronounced in specimens exposed to higher corrosion rate environments, even when damage in both environments leads to equivalent metallographic features. This suggests significant differences in the underlying physical mechanisms of the damage accumulation process when the same material is exposed to different corrosive solutions. This work suggests the need to expand current corrosion damage interpretation, to account not only for geometrical metallographic features but also for mechanical properties of the affected material.

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Pit morphology characterization and corrosion fatigue crack nucleation analysis based on energy principle

Cited by 18 publications

References 19 publications

Effect of corrosion on the fatigue crack propagation properties of butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution

Effect of corrosion on the fatigue crack propagation properties of butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution

Research on Corrosion Fatigue Performance and Multiple Fatigue Sources Fracture Process of Corroded Steel Wires

Effect of environment's aggressiveness on the corrosion damage evolution and mechanical behavior of AA 2024‐T3

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