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.
Get full access to this article
View all access options for this article.
References
1.
PARISP. C. and ERDOGANF.: J. Basic Eng. (Trans. ASME, D), 1963, 85, 528.
2.
LINDLEYT. C. and RICHARDSC. E.: Mater. Sci. Eng., 1976, 14, 281.
3.
RITCHIER. O. and KNOTTJ. F.: Acta Metall., 1973, 21, 639.
4.
PELLOUXR. M. N.: Eng. Fract. Mech., 1970, 1, 697.
5.
LAIRDC. and SMITHG. C.: Philos. Mag., 1962,7, 847.
6.
KLESNILM. and LUKASP.: Mater. Sci. Eng., 1972, 9, 231.
7.
PARISP. C., BUCCIR. J., WESSELE. T., CLARKW. G., and MAGERT. R.: ASTM STP 513, 1972, 141.
8.
ROBINSONJ. L. and BEEVERSC. J.: Met. Sci. J., 1973, 7, 153.
9.
COOKER. J., IRVINGP. E., BOOTHG. S., and BEEVERSC. J.: Eng. Fract. Mech., 1975, 7, 69.
10.
RITCHIER. O.: Met. Sci., 1977, 11, 368.
11.
JOHNSONH. H. and PARISP. C.: Eng. Fract, Mech., 1968, 1, 3.
12.
WEIR. P.: ibid., 1970, 1, 633.
13.
BARSOMJ. M.: Proc. Int. Conf. on Corrosion Fatigue, Univ. Connecticut (NACE), 1972, 424.
14.
WEIR. P. and LANDESJ. D.: Mater. and Stds, 1969, 9, 25.
15.
GERBERICHW. W., BIRATJ. P., and ZACKAYV. F.: Ref. 13, p. 396.
16.
GALLAGHERJ. P. and WEIR. P.: ibid., p. 409.
17.
PARISP. C., BocaR. J., and LITTLEC. D.: Ref. 7, p. 196.
18.
MILLARG. A., HUDAKS. J., and WEIR. P.: J. Testing and Evaluation, 1973, 1, 524.
19.
AUSTENI. M. and WALKERE. F.: Proc. Int. Conf. on Influence of Environment on Fatigue, London, 1977(IMechE).
20.
SPITZIGW. A., TALDAP.M., and WEIR. P.: Eng. Fract. Mech., 1968, 1, 155.
21.
CLARKEW. G.: ‘Hydrogen in metals’, p. 149. 1974: Metals Park, Ohio (ASM).
22.
NELSONH. G.: Proc. Conf. on Effect of Hydrogen on Behaviour of Materials, AIME, 1975.
23.
STEWARTA. T.: ‘Mechanisms of environment sensitive cracking of materials’(Proc. Conf. Guildford1977), p.,400. 1978: London (Met. Soc.).
