Journal ArticleDOI
The effect of cyclic stressing on the oxidation of a low-carbon steel
TLDR
In this paper, the effect of cyclically stressing a low carbon steel was studied at tempera-tures of 500 and 570°C, and it was found that if the cyclic strain was above a threshold value which corresponded to the fracture strain of the surface scale, then the oxide growth rate increased both at 500 and at 570°c. The oxide fracture strains under fatigue conditions were found to be in the range 2.7 - 5.1 x 10-4.Abstract:
The effect on oxidation of cyclically stressing a low carbon steel was studied at tempera-tures of 500 and 570°C. It was found that if the cyclic strain was above a threshold value which corresponded to the fracture strain of the surface scale, then the oxide growth rate increased both at 500 and at 570°C. The oxide fracture strains under fatigue conditions were found to be in the range 2.7 - 5.1 x 10-4. The mechanism of the process is discussed in relation to oxidation kinetics and the mechanical properties of the growing surface scales.read more
Citations
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Journal ArticleDOI
Thermomechanical fatigue, oxidation, and Creep: Part II. Life prediction
Richard W. Neu,Huseyin Sehitoglu +1 more
TL;DR: In this article, a life prediction model for crack nucleation and early crack growth based on fatigue, environment (oxidation), and creep damage was developed for 1070 steel for a wide range of test conditions and straintemperature phasings.
Journal ArticleDOI
Thermomechanical fatigue, oxidation, and creep: Part i. Damage mechanisms
Richard W. Neu,Huseyin Sehitoglu +1 more
TL;DR: Isothermal fatigue tests and both out-of-phase and in-phase thermomechanical fatigue tests were performed in air and in helium atmospheres as mentioned in this paper, and the results indicated that the fatigue lives are 2 to 12 times greater in helium than in air.
Journal ArticleDOI
Fatigue oxidation interaction in a superalloy—application to life prediction in high temperature low cycle fatigue
J. Reuchet,Luc Rémy +1 more
TL;DR: In this paper, a crack growth equation was proposed to calculate the elementary crack advance, which is a summation of a mechanical contribution due to the fatigue process itself which is described by Tomkins' equation and of an oxidation contribution evaluated from metallographic measurements.
Journal ArticleDOI
Analysis of the hysteresis loops of a martensitic steel: Part I: Study of the influence of strain amplitude and temperature under pure fatigue loadings using an enhanced stress partitioning method
TL;DR: In this article, a study of the cyclic stress partitioning is presented, where the authors identify the microstructural mechanisms leading to the softening effect usually presented by martensitic steels under cyclic loadings.
Journal ArticleDOI
Application of fracture mechanics to failure of surface oxide scales
P. Hancock,John Nicholls +1 more
TL;DR: In this article, a new simple method is described for determining the dimensions of a composite defect in surface scales by summing the actual defects present in the scale using well established techniques of linear elastic analysis.
References
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Journal ArticleDOI
Xi. The origin of fatigue fracture in copper
TL;DR: In this paper, metallographic observations of the development of fatigue cracks in copper were described and the bearing of these observations on the problem of the origin of a fatigue crack was discussed.
Journal ArticleDOI
The effect of atmospheric corrosion on metal fatigue
N. J. Wadsworth,J. Hutchings +1 more
TL;DR: In this paper, the authors examined polycrystalline specimens of copper, aluminium and gold and found that they were fatigued in, reversed bend in various pressures of air and in water vapour and inert gases.
Journal ArticleDOI
Strain/oxidation interactions in steels and model alloys.
D. R. Holmes,R. T. Pascoe +1 more
TL;DR: In this paper, the strain/oxidation interactions in steels and model alloys are considered in relation to their operating conditions and the strains generated in oxide films on a number of materials of interest to the power generation industry are considered.
Journal ArticleDOI
Effect of Environment and Hold Time on the High Strain Fatigue Endurance of 1/2 Percent Molybdenum Steel:
TL;DR: In this article, high strain bending fatigue tests on 1/2 per cent molybdenum steel in air and in a vacuum were conducted to investigate the effect of introducing a hold period in the position of maximum strain.
Journal ArticleDOI
Tensile fracture of magnetite films
TL;DR: In this paper, a method of detecting the onset of oxide failure in conducting oxide films is described, and critical tensile fracture strains at room temperature in the range 0·8 to 3·2 × 10 −3 have been found for magnetite films formed on iron during high temperature aqueous corrosion.
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