The number offatigue cycles required to initiate a crack were determined for the duplex stainless steel X4 CrMnNiMoN2664 in 4N NaCI, at 80°C, pH=2 and 7, and are compared with measurements of the tendency for stress-corrosion cracking and pitting in the same media. The fatigue strength of X4 CrMnNiMoN2664 in the neutral chloride solution is not much lower than in air, whereas there is a significant decrease of the fatigue strength in the acid solution. This decrease can be attributed to a decreased stability of the passive film and not to an increased tendency to pitting. There was no tendency for stress-corrosion cracking of X4 CrMnNiMoN2664 in any of the environments studied.
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References
1.
MOLLERM.: PhD thesis, ETH, Lausanne, 1980.
2.
MOLLERM.: Metall. Trans., in press.
3.
SPEIDELM. O.: Corrosion, 1977, 33, 199.
4.
MORE. D., SCOTTOV., and MOLLICAA.: Werkst. Korros., 1980, 31, 281.
5.
POURBAIXM.: Corrosion, 1970, 26, 431.
6.
POURBMXH.: J. Less-Common Met., 1972, 28, 51.
7.
LECKIEH. P. and tunicH. H.: J. Electrochem. Soc., 1966, 113, 1262.
8.
SCOTTOV., VENTURAG., and TRAVERSOA.: Corros. Sci., 1979, 19, 237.
9.
PESSALN., HULLF. C. and LiuC.: Westinghouse Research and Develop-ment Report478, 1969.
10.
BONDA. P.: J. Electrochem. Soc., 1973, 120, 103.
11.
LIZLOVSE. A. and BONDA. P.: J. Electrochem. Soc., 1975, 122, 719.
12.
RICHARDSONW. H. and GLIIIAP.: Br. Corros. J., 1979, 14, 167
13.
TRUMANJ. E., COLEMANM. J., and PIRTK. R.: Br. Corros. J., 1977,12, 236.
14.
STREICHERM. A.: Corrosion, 1974, 30, 77.
15.
HOCHMANJ., DESERTRETA., JOLLYP., and MAYOUDR.: ‘Stress corrosion cracking and hydrogen embrittlement of iron base alloys‘, (eds. StaehleR. W. et al.), 256; 1977, Houston, Texas, National Association of Corrosion Engineers.
16.
LAIRDC. and nuourrrcH. s.: ‘Corrosion fatigue: chemistry, mechanics and microstructure’, (eds. DevereuxO. et al.), 88; 1972, Houston, Texas, National Association of Corrosion Engineers.
17.
EVANSV. R.: ‘Corrosion and oxidation of metals‘; 1976, London, Arnold.
18.
MOSKOVITZJ. A. and PELLOUXR. M.: ‘Corrosion-fatigue technology‘, STP 642,133; 1978, Philadelphia, Pa, American Society for Testing and Materials.
