The corrosion behavior of Co-Cr-Al alloys exposed to mixed oxygen-sulfur atmospheres at 900 °C

Guo, Xiaohui; Ren, Yan; Shen, Jun; Taguchi, Dai; Lv, Y.L.; Niu, Yanhui

doi:10.1016/j.corsci.2021.109530

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…This is particularly true for equipment operating in marine environments, where metal structures are more susceptible to severe corrosion compared to those in land-based settings. For instance, in corrosive marine conditions, aluminum alloy surfaces are vulnerable to extensive and haphazard corrosion damage, resulting in stress concentration and ultimately reducing the structure's lifespan [6][7][8][9][10]. The aluminum alloys are extensively used in the aerospace, automotive, shipbuilding, and high-speed rail industries due to their high strength-to-weight ratio, which is particularly beneficial for reducing structural weight [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Zhang,

Wang,

Fang

et al. 2024

Symmetry

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The mechanical properties and crack propagation behavior of aluminum alloys, both with and without corroded surfaces, were thoroughly investigated through molecular dynamic (MD) simulations. The study delved into the effects of corrosion depth and width on the mechanical properties of corroded aluminum alloys. It was found that as the corrosion depth increases, the yield strength experiences an initial decrease followed by a subsequent increase. This can be attributed to the impact of increased corrosion depth on the healing of surface roughness, which ultimately leads to significant changes in yield strength. Furthermore, the presence of corrosion pits was identified as a key factor in regulating the local microstructure evolution within the material, leading to pronounced differences in stress distribution localization. This, in turn, influenced the path of crack propagation within the material. These findings not only contribute to a deeper understanding of the behavior of aluminum alloys under corrosion, but also provide valuable insights for the development of aluminum alloys with enhanced mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Zhang,

Wang,

Fang

et al. 2024

Symmetry

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“…Ti64-sulfur interaction. Several studies exist for the sulfidation of Ti64 and other alloys in the presence of gaseous H 2 S or SO 2 [7][8][9][10][11]; however, to the authors best knowledge, no literature exists on the sulfidation of Ti64 with elemental sulfur. This work aimed to fill that knowledge gap.…”

Section: Introductionmentioning

confidence: 99%

Sulfidation kinetics of titanium and Ti-6Al-4V with elemental sulfur

Raikar

DiGregorio

Hildreth

2023

Corrosion Engineering, Science and Technology

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The sulfidation kinetics of titanium and Ti-6Al-4V (Ti64) using elemental sulfur were studied by measuring the amount of metal consumed instead of the change in mass or scale thickness. This metal consumption approach combines the parabolic oxidation law, Arrhenius equation, and Pilling-Bedworth ratio to determine the apparent activation energy and the pre-exponential factor of consumption of Ti64 during sulfidation. The estimations of apparent activation energy and preexponential factor were 110.4 kJ•mol −1 and 1.3 × 10 −9 m 2 s −1 for the titanium-sulfur, and 116.2 kJ•mol −1 and 1.2 × 10 −9 m 2 s −1 for the Ti64-sulfur system. Finally, a material removal predictor was developed to predict the amount of Ti64 consumed for a given sulfidation temperature and time.

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