Effect of Microstructural Banding on the Fatigue Behavior of Induction-Hardened 4140 Steel

Hayne, Mathew L.; Anderson, Patrick I.; Findley, Kip O.; Tyne, C. J. Van

doi:10.1007/s11661-013-1774-z

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…Cyril et al [29] observed that a significant reduction in fatigue performance can occur when MnS stringers are aligned with the crack propagation direction. Hayne [30] found that inclusion shape control through alloying with calcium prevented elongation of inclusions during rolling and diminished orientation dependent fatigue in induction hardened 4140. In previous work [25], hydrogen diffusion was not affected by MnS stringers at S levels below 0.01% and differences in effective hydrogen diffusivity were exclusively attributed to ferrite-pearlite alignment.…”

Section: Figurementioning

confidence: 99%

Effects of microstructure banding on hydrogen assisted fatigue crack growth in X65 pipeline steels

Ronevich

Somerday

Marchi

2016

International Journal of Fatigue

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Banded ferrite-pearlite X65 pipeline steel was tested in high pressure hydrogen gas to evaluate the effects of oriented pearlite on hydrogen assisted fatigue crack growth. Test specimens were oriented in the steel pipe such that cracks propagated either parallel or perpendicular to the banded pearlite. The ferrite-pearlite microstructure exhibited orientation dependent behavior in which fatigue crack growth rates were significantly lower for cracks oriented perpendicular to the banded pearlite compared to cracks oriented parallel to the bands. The reduction of hydrogen assisted fatigue crack growth across the banded pearlite is attributed to a combination of cracktip branching and impeded hydrogen diffusion across the banded pearlite.

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Section: Figurementioning

confidence: 99%

Effects of microstructure banding on hydrogen assisted fatigue crack growth in X65 pipeline steels

Ronevich

Somerday

Marchi

2016

International Journal of Fatigue

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“…The sulfur content and the fibre orientation will have a considerable influence on the tensile, impact and fatigue properties. The effect of MnS inclusions on the material behaviour is discussed in 10,28,29,30,31,32 , while 33 puts a special emphasis on the key role of non-metallic inclusions on the fatigue behaviour in general. The maximum fatigue strength with respect to crack initiation and crack propagation lifetimes is achieved for a perfect alignment ( =0°) of the fibre like forging texture with the load direction.…”

Section: Manufacturing Effects Anisotropy and Localized Materials Beh...mentioning

confidence: 99%

Deriving Stress Limits for Fatigue Design with a Consideration of the Manufacturing Process Influence

Hell

Wagener

2022

Preprint

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The material behaviour of forged components is subjected to an intensive influence of the manufacturing process. The local logarithmic strain as well as the cooling conditions may influence the cyclic stress-strain behaviour as well as the fatigue behaviour of the material. For a reliable lightweight design of components, those effects have to be considered already during early product development stages, because the definition of the component geometry will already imply process related limitations regarding the achievable local material propeties. A combination between a process simulation and a strain-based fatigue life estimation, including a customized testing strategy, allows a consideration of the manufacturing process influence as well as an implementation of statistical and mechanical size effects and improves the quality of the fatigue assessment and the reliability of numerically derived stress limits for component design compared to the state of the art.

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“…As described previously, compressive residual stresses arise in the case, which are beneficial for fatigue resistance. Similarly, Figure 26(b) is a plot of bending stress amplitude versus number of cycles to failure in induction-hardened calcium-treated 4140 steel (35). Often, the core microstructure is more susceptible to fatigue damage than the case.…”

Section: Strength and Fatigue Of Induction-hardened Partsmentioning

confidence: 99%

Microstructures and Mechanical Performance of Induction-Hardened Medium-Carbon Steels

Nissan

Findley

2014

Comprehensive Materials Processing

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Effect of Microstructural Banding on the Fatigue Behavior of Induction-Hardened 4140 Steel

Cited by 9 publications

References 14 publications

Effects of microstructure banding on hydrogen assisted fatigue crack growth in X65 pipeline steels

Effects of microstructure banding on hydrogen assisted fatigue crack growth in X65 pipeline steels

Deriving Stress Limits for Fatigue Design with a Consideration of the Manufacturing Process Influence

Microstructures and Mechanical Performance of Induction-Hardened Medium-Carbon Steels

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