Effect of creep on the oxidation characteristics of Fe-Si alloys at 973?1073 K

Rolls, R.; Shahhosseini, M. H.

doi:10.1007/bf00662033

Cited by 24 publications

(8 citation statements)

References 18 publications

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“…Nevertheless, all authors agree with the fact that the application of an external tensile stress to a material increases the oxidation rate [3][4][5]. Furthermore, there is some published information on the effect of external stresses on the oxide-scale integrity, adhesion and microstructure [6][7][8], oxidation products and internal oxidation [3,4]. In particular, crack healing behavior was studied by Schütze [9][10][11], and indicated that a critical tensile strain of 1% existed for such a healing process.…”

Section: Introductionmentioning

confidence: 77%

A Critical Compressive Stress for Increasing the Oxidation Kinetics of Fe–20Cr Alloy Oxidized at 900 °C

Zhou

Wang

2009

Oxid Met

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The effects of compressive stresses on the oxide-scale morphologies formed on an Fe-20Cr alloy were investigated by comparison of the oxidation behavior in air under classical conditions, i.e., without any applied mechanical stresses and under static compressive stresses, at 900°C. The study was carried out mainly by comparisons of oxidation kinetics gained by thermogravimetric analysis (TGA), surface morphologies of oxidized specimens observed by scanning electron microscopy (SEM), oxidized products examined by X-ray diffraction (XRD). It was found that the application of compressive stresses induced an increase in oxidation rate, but a decrease of oxide grain size. When the stresses are in the range of 5-8 MPa, both chromium-and iron-oxides formed but, at other stresses, only chromia was present. In particular, there was a maximum in oxidation rate when the applied stress was 5 MPa. The paper places emphasis on analyzing the cause of this phenomenon.

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Section: Introductionmentioning

confidence: 77%

A Critical Compressive Stress for Increasing the Oxidation Kinetics of Fe–20Cr Alloy Oxidized at 900 °C

Zhou

Wang

2009

Oxid Met

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“…It was found [16] that 1% tensile strain rate accelerated the oxidation rate of IN800H. Rolls et al [17] also found that external stress accelerated oxidation rates suggesting that creep played a role. Richmond et al [18] suggested that there was a critical value above which external stress affected the oxidation rate, but the mechanism was still ambiguous.…”

Section: Oxidation Kineticsmentioning

confidence: 94%

“…The mechanisms of the effects of CL and TL on the oxidation kinetics are different. Rolls et al [17] suggested the increasing oxidation rate might be linked with the possibility of there being a greater vacancy flux injected into the substrate. A decrease in the vacancy supersaturation at the scale-metal interface would favor an increase in the oxidation rate.…”

Section: Oxidation Kineticsmentioning

confidence: 98%

Effect of Mechanical Loading on the Oxidation Kinetics and Oxide-Scale Failure of Pure Ni

Zhou

Wang

2008

Oxid Met

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The oxidation kinetics and mechanism of oxide-scale failure of pure Ni oxidized under external static compressive and tensile loads were studied. The results showed that both types of mechanical loads accelerated the oxidation rate, but the effect was different for the two types. Compressive loading (CL) affected it by improving the plasticity of oxide scales, and tensile loading (TL) affected it by amplifying the compaction of the oxide-metal interface. As for the oxide-scale failure, CL can delayed cracking, TL accelerated brittle failure. The study analyzed the effect of external load on the oxidation kinetics and the failure mechanism of oxide scales.

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“…Thus, the integration and growth rate of scale have been ensured to be affected. According to previous investigations [2][3][4][5][6][7][8], the external loading did affect the scale-growth kinetics and scale failure, although different effects were suggested. It is believed that the external loading increases the growth of the oxide scale except for a few observations [9,10].…”

Section: Introductionmentioning

confidence: 99%

Oxidation Behavior of Ni-10Cr Alloy under the Compressive Stress at 900 ℃

Zhou¹,

Pan²,

Zhang³

et al. 2019

dtetr

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Oxidation behavior of Ni-10Cr alloy was investigated in the presence of compressive stress at 900 ℃. Oxidation kinetics, measured by two methods, indicated a parabolic rate law. The applied compressive stress increased the growth of the oxide scale. Evolution of surface morphology of oxide scale revealed a serious of stress releasing forms during the oxidation proceeding. In spite of occasionally cracking and spalling generated, re-oxidation at the cracks and spallation appeared.

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Effect of creep on the oxidation characteristics of Fe-Si alloys at 973?1073 K

Cited by 24 publications

References 18 publications

A Critical Compressive Stress for Increasing the Oxidation Kinetics of Fe–20Cr Alloy Oxidized at 900 °C

A Critical Compressive Stress for Increasing the Oxidation Kinetics of Fe–20Cr Alloy Oxidized at 900 °C

Effect of Mechanical Loading on the Oxidation Kinetics and Oxide-Scale Failure of Pure Ni

Oxidation Behavior of Ni-10Cr Alloy under the Compressive Stress at 900 ℃

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