Corrosion-Induced Fatigue Failure of a First-Stage Flow Straightener Vane of an Aeroengine

Hazra, Mrityunjoy; Singh, Satyapal

doi:10.1007/s11668-018-0467-8

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…However, the failure of AH 32 steel in marine environment is often caused by the interaction of load and corrosion, the researches of interaction mechanism and durability of corrosion fatigue of this material are relatively insufficient. Numerical studies have testified the accelerating effect of corrosion process on fatigue failure [17][18][19][20]. Therefore, the methods of inhibiting corrosion have been widely adopted to extend the corrosion fatigue life, such as, surface enhancement by laser [21][22], low plasticity burnishing [23], and cathodic protection [24][25].…”

Section: Introductionmentioning

confidence: 99%

Durability method on corrosion fatigue performance of AH 32 steel

Huang

Wang

2019

Frattura Ed Integrità Strutturale

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A durability method in view of cathodic protection is proposed to improve the corrosion fatigue resistance of AH 32 steel in seawater. By aid of corrosion fatigue tests, the effects of thermal spraying Zn (zinc) and Cr (chromium) coating corrosion fatigue lives are quantitatively determined, respectively, and electrochemical measurement and fracture analysis are used to analyze the life-prolonging mechanism of these two coatings on corrosion fatigue. The results show that both Zn and Cr coating improve the corrosion fatigue resistance of AH 32 steel, and the effect enhances with the decrease of stress. The effect of Cr coating on corrosion fatigue of AH 32 steel mainly reflects in extending the crack initiation life for its better corrosion resistance. While the effect of Zn coating on corrosion fatigue lies in not only inhibiting the initiation of corrosion fatigue but also restraining crack propagation as cathodic protection materials. To sum up, Cr coating has a better durability effect than Zn coating at higher stress level, while Zn exceeds Cr at low stress level.

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Section: Introductionmentioning

confidence: 99%

Durability method on corrosion fatigue performance of AH 32 steel

Huang

Wang

2019

Frattura Ed Integrità Strutturale

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Aircraft Engine Maintenance Based on Reinforcement Learning

Wang

2020

2020 International Conference on Intelligent Transportation, Big Data &Amp; Smart City (ICITBS)

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Study on Microstructure and Corrosion Fatigue Resistance of 14Cr12Ni3Mo2VN Materials Based on the Composite Technology of High-Frequency Induction Quenching and Laser Shock Peening

Gao,

Xu,

et al. 2024

Coatings

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This study investigated the microstructure, microhardness, and residual compressive stress of 14Cr12Ni3Mo2VN martensitic stainless steel treated with high-frequency induction quenching (HFIQ) and laser shock peening (LSP). Using rotating bending corrosion fatigue testing, the corrosion fatigue performance was analyzed. Results show that a microstructural gradient formed after HFIQ and LSP: the surface layer consisted of nanocrystals, the subsurface layer of short lath martensite, and the core of thick lath martensite. A hardness gradient was introduced, with surface hardness reaching 524 Hv0.1, 163 Hv0.1 higher than the core hardness. A residual compressive stress field was introduced near the surface, with a maximum residual compressive stress of approximately −575 MPa at a depth of 0.1 mm. Corrosion fatigue results indicate that cycle loading times of samples treated with HFIQ and LSP were 2.88, 2.04, and 1.45 times higher than untreated, HFIQ-only, and LSP-only samples, respectively. Transmission electron microscopy (TEM) characterization showed that HFIQ reduced the lath martensite size, while the ultra-high strain rate induced by LSP likely caused dynamic recrystallization, forming numerous sub-boundaries and refining grains, which increased surface hardness. The plastic strain induced by LSP introduced residual compressive stress, counteracting tensile stress and hindering the initiation and propagation of corrosion fatigue cracks.

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Corrosion-Induced Fatigue Failure of a First-Stage Flow Straightener Vane of an Aeroengine

Cited by 3 publications

References 6 publications

Durability method on corrosion fatigue performance of AH 32 steel

Durability method on corrosion fatigue performance of AH 32 steel

Aircraft Engine Maintenance Based on Reinforcement Learning

Study on Microstructure and Corrosion Fatigue Resistance of 14Cr12Ni3Mo2VN Materials Based on the Composite Technology of High-Frequency Induction Quenching and Laser Shock Peening

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