Oxidation Kinetics Researches under the Condition of Compressive Loading

Zhou, Chang; Pan, Ruiyun; T., H.; Zhang, H.; Guan, Xiangjiu; Mao, Ning; Sun, Feng

doi:10.1088/1757-899x/389/1/012017

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…As far as we know, there are two different perspectives on the effect of pre-strain. One perspective thinks that the oxidative damage level is increased by pre-strain, leading to cracking and spalling in scales [29][30][31]. Other researchers have presented a different perspective.…”

Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of Pre-Strained Polycrystalline Ni3Al-Based Superalloy

Guo,

Ding,

Wang

et al. 2024

Materials

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The harsh service environment of aeroengine hot-end components requires superalloys possessing excellent antioxidant properties. This study investigated the effect of pre-strain on the oxidation behavior of polycrystalline Ni3Al-based superalloys. The growth behaviors of oxidation products were analyzed by scanning electron microscope, transmission electron microscope, X-ray Photoelectron Spectroscopy and Raman spectroscopy. The results indicated that the 5% pre-strained alloys exhibited lower mass gain, shallower oxidation depth and more compact oxide film structures compared to the original alloy. This is mainly attributed to the formation of rapid diffusion paths for Al atoms diffusing to the surface under 5% pre-strain, which promotes the faster formation of protective Al2O3 film while continuing to increase the pre-strain to 25% results in less protective transient oxidation behavior being aggravated due to the increase in dislocation density within the alloy, which prevents the timely formation of the protective Al2O3 film, resulting in uneven oxidation behavior on the alloy.

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Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of Pre-Strained Polycrystalline Ni3Al-Based Superalloy

Guo,

Ding,

Wang

et al. 2024

Materials

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“…However, during the hot rolling of ferritic STSs with a high Cr content, oxide flakes form and stick to the rollers, deteriorating the surface of the STSs. , Because the surface quality is critical, STSs with indented surfaces have significantly diminished value. , Therefore, many engineers have tried to explain the fundamental mechanisms , and address the sticking failure problem with empirical control of alloying elements, structural analysis, processing parameter controls, and replication of hot-rolling processes . Kim et al suggested failure mechanisms with different types of commercial STSs on the basis of an ex situ elemental image analysis of the microstructure of the scale and the exposed fractured surface.…”

Section: Introductionmentioning

confidence: 99%

In SituScanning Electron Microscopy Analysis of the Interfacial Failure of Oxide Scales on Stainless Steels and Its Effect on Sticking during Hot Rolling

et al. 2022

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Despite various strategies to address sticking failure in stainless steels (STSs), difficulties in understanding its fundamental mechanisms hinder precise solutions during STS fabrication. This study investigated the effect of chromium (Cr) content on the microstructures and failure modes of oxide scales under a tensile load, simulating the hot-rolling process. The dynamic, real-time behavior of crack initiation, propagation, and interfacial delamination in the oxide scales under tension was analyzed using an in situ scanning electron microscopy (SEM) tensile test. With a high Cr content, iron (Fe) oxide and chromium(III) oxide (Cr 2 O 3 ) form a layered structure, which is delaminated along the interfaces between the thin Cr 2 O 3 layer and the bulk after perpendicular cracking. The saturated crack densities obtained from in situ SEM provide interfacial strength, while the elastic modulus and hardness obtained from nanoindentation provide vertical fracture strength. In combination with an ex situ elemental image analysis, the in situ SEM results reveal three different failure modes of the four different STSs. The results confirm that sticking failure is more likely to occur as the Cr content increases.

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Oxidation Kinetics Researches under the Condition of Compressive Loading

Cited by 2 publications

References 15 publications

Oxidation Behavior of Pre-Strained Polycrystalline Ni3Al-Based Superalloy

Oxidation Behavior of Pre-Strained Polycrystalline Ni3Al-Based Superalloy

In SituScanning Electron Microscopy Analysis of the Interfacial Failure of Oxide Scales on Stainless Steels and Its Effect on Sticking during Hot Rolling

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