The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel
P.J. Cotterill, J.E. King
Fatigue crack growth tests have been carried out in a number of gaseous environments in order to assess their effects on the crack propagation resistance of BS 4360 grade 50EE, a weldable structural steel. Crack growth rates at 25 °C are up to 20 times higher in hydrogen than in air, but there is no effect when hydrogen is present as a 30% constituent of a simplified product gas (SPG). Indeed, crack growth rates in such a mixture are slightly lower than those measured in air, being comparable with those observed in an inert environment. The other gases present in the SPG are CO, CO2 and CH4, and it is probable that the carbon monoxide is responsible for nullifying the embrittling effects of hydrogen, by preferentially adsorbing on to the surface of the steel and thus blocking hydrogen entry. Experimental observations suggest that oxygen has the same effect when small quantities are allowed to diffuse into a non-flowing hydrogen environment around a propagating crack. The results are encouraging in terms of the suitability of conventional structural steels such as BS 4360 for gas plant applications. The gas mixtures present in such an environment would not have the severe detrimental effects on fatigue crack growth resistance which result from the presence of 'pure' hydrogen. © 1993.
International Journal of Fatigue
https://doi.org/10.1016/0142-1123(93)90073-Y
embrittlement
gas production
Dive into the research topics of 'The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel'. Together they form a unique fingerprint.
Crack Growth Rate Mathematics 100%
Fatigue Crack Growth Mathematics 94%
Hydrogen Mathematics 74%
Atmosphere Mathematics 70%
Steel Mathematics 67%
Fatigue crack propagation Engineering & Materials Science 57%
Coal Chemistry 54%
Influence Mathematics 43%
Cotterill, P. J., & King, J. E. (1993). The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel. International Journal of Fatigue, 15(1), 27-30. https://doi.org/10.1016/0142-1123(93)90073-Y
Cotterill, P.J. ; King, J.E. / The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel. In: International Journal of Fatigue. 1993 ; Vol. 15, No. 1. pp. 27-30.
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title = "The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel",
abstract = "Fatigue crack growth tests have been carried out in a number of gaseous environments in order to assess their effects on the crack propagation resistance of BS 4360 grade 50EE, a weldable structural steel. Crack growth rates at 25 °C are up to 20 times higher in hydrogen than in air, but there is no effect when hydrogen is present as a 30% constituent of a simplified product gas (SPG). Indeed, crack growth rates in such a mixture are slightly lower than those measured in air, being comparable with those observed in an inert environment. The other gases present in the SPG are CO, CO2 and CH4, and it is probable that the carbon monoxide is responsible for nullifying the embrittling effects of hydrogen, by preferentially adsorbing on to the surface of the steel and thus blocking hydrogen entry. Experimental observations suggest that oxygen has the same effect when small quantities are allowed to diffuse into a non-flowing hydrogen environment around a propagating crack. The results are encouraging in terms of the suitability of conventional structural steels such as BS 4360 for gas plant applications. The gas mixtures present in such an environment would not have the severe detrimental effects on fatigue crack growth resistance which result from the presence of 'pure' hydrogen. {\textcopyright} 1993.",
keywords = "embrittlement, gas production, structural steel",
author = "P.J. Cotterill and J.E. King",
doi = "10.1016/0142-1123(93)90073-Y",
journal = "International Journal of Fatigue",
Cotterill, PJ & King, JE 1993, 'The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel', International Journal of Fatigue, vol. 15, no. 1, pp. 27-30. https://doi.org/10.1016/0142-1123(93)90073-Y
The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel. / Cotterill, P.J.; King, J.E.
In: International Journal of Fatigue, Vol. 15, No. 1, 01.1993, p. 27-30.
T1 - The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel
AU - Cotterill, P.J.
AU - King, J.E.
N2 - Fatigue crack growth tests have been carried out in a number of gaseous environments in order to assess their effects on the crack propagation resistance of BS 4360 grade 50EE, a weldable structural steel. Crack growth rates at 25 °C are up to 20 times higher in hydrogen than in air, but there is no effect when hydrogen is present as a 30% constituent of a simplified product gas (SPG). Indeed, crack growth rates in such a mixture are slightly lower than those measured in air, being comparable with those observed in an inert environment. The other gases present in the SPG are CO, CO2 and CH4, and it is probable that the carbon monoxide is responsible for nullifying the embrittling effects of hydrogen, by preferentially adsorbing on to the surface of the steel and thus blocking hydrogen entry. Experimental observations suggest that oxygen has the same effect when small quantities are allowed to diffuse into a non-flowing hydrogen environment around a propagating crack. The results are encouraging in terms of the suitability of conventional structural steels such as BS 4360 for gas plant applications. The gas mixtures present in such an environment would not have the severe detrimental effects on fatigue crack growth resistance which result from the presence of 'pure' hydrogen. © 1993.
AB - Fatigue crack growth tests have been carried out in a number of gaseous environments in order to assess their effects on the crack propagation resistance of BS 4360 grade 50EE, a weldable structural steel. Crack growth rates at 25 °C are up to 20 times higher in hydrogen than in air, but there is no effect when hydrogen is present as a 30% constituent of a simplified product gas (SPG). Indeed, crack growth rates in such a mixture are slightly lower than those measured in air, being comparable with those observed in an inert environment. The other gases present in the SPG are CO, CO2 and CH4, and it is probable that the carbon monoxide is responsible for nullifying the embrittling effects of hydrogen, by preferentially adsorbing on to the surface of the steel and thus blocking hydrogen entry. Experimental observations suggest that oxygen has the same effect when small quantities are allowed to diffuse into a non-flowing hydrogen environment around a propagating crack. The results are encouraging in terms of the suitability of conventional structural steels such as BS 4360 for gas plant applications. The gas mixtures present in such an environment would not have the severe detrimental effects on fatigue crack growth resistance which result from the presence of 'pure' hydrogen. © 1993.
KW - embrittlement
KW - gas production
KW - structural steel
U2 - 10.1016/0142-1123(93)90073-Y
DO - 10.1016/0142-1123(93)90073-Y
JO - International Journal of Fatigue
JF - International Journal of Fatigue
Cotterill PJ, King JE. The influence of a coal gasifier atmosphere on fatigue crack growth rates in BS 4360 steel. International Journal of Fatigue. 1993 Jan;15(1):27-30. https://doi.org/10.1016/0142-1123(93)90073-Y