Effect of aqueous and hydrogen environments on fatigue crack growth in 2Ni-Cr-Mo-V rotor steel
Authors: Smith, P.; Stewart, A. T.
Source: Metal Science, Volume 13, Number 7, July 1979 , pp. 429-435(7)
Publisher: Maney Publishing
Abstract:A comparison has been made of the corrosion fatigue behaviour of a low-alloy rotor steel in aqueous and hydrogen environments. Cracks were grown under conditions of constant alternating stress intensity and stress ratio, and fatigue crack growth rates were determined as a function of temperature, cyclic frequency, and waveform. These were found to be up to seven and fourteen times faster in water and hydrogen than in air. It is shown that the magnitude of the environmental cracking component and the morphology of cracking is the same in the two environments, indicating that a hydrogen embrittlement mechanism also operates in water.
Document Type: Research Article
Publication date: 1979-07-01
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