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| EFFECT OF STRENGTH OF STEELS ON THE SUSCEPTIBILITY TO STRESS CORROSION CRACKING |
| Zheng Wenlong(Shanghai Research Institute of Materials; Shanghai; China) |
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Abstract The susceptibility to SCC (stress corrosion cracking)of steels with different strength levels has been investigated by measuring K_(1scc), hydrogen permeation, acoustic emission and by electronfractography. The metal/environment systems investigated were 4OCrNiMo steel in 3.5% NaCl solution at room temperature, 50Mn18Cr4MoVN steel in 36% Ca(NO_3)_2+3％NH_4NO_3 solution at room temperature and 34CrNi3Mo steel in 30% NaOH solution at 80℃. The test of the last system was conducted at open circuit potential as well as at a controlled potential of-1400mV (SCE). The results reveal that the effect of strength of steels on ehe susceptibility to SCC differs with different mechanism and cannot be gentralizedo When plastic deformation is the controlling factor, the increase of the strength of steels can improve the resistance to SCC.
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Received: 25 August 1984
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[1] Buhl, H., Stress Corrosion. Cracking D, FVLR, 145 (1981)
[2] Staehle, R. W., et. al., Metals HandbooK, 8th, ASM, 10． 217(1975)
[3] Gerberich, W. W., 《Hydrogen in Metals》, Ed. by I. M. Bernstein and Anthony W. Thompson, ASM, 115～147 (1974)
[4] Sandoz, G., Stress Corrosion Cracking in High Strength Steels and in Aluminium and Titanium Alloys, Brown, B. F. Ed., NRL Washing ton D. Co 80(1972)
[5] ibit. P. 97．
[6] Kwster. F.; Bohnenkamq K.; Engell, H. J; Werkstoffe und Korrosion, 29 792～699(1978)
[7] NACE stantarel MR-01-75． Materials Performance. 14, 4, 69(1975)
[8] GB-2038-80,冶金标准化,11,1(1980)
[9] Engell, H. J.; Baumd. A, Physical Metallurgy of Stress Corrosion Fracture MSC. F. Ed., by Tyor N. Rhodin. IP. New. York. London. 193 (1959)
[10] Bohnenkamp, K., Fundamental Aspects of stress Corrosion Cracking, Staehle, R. W., Forty A. J. Ed, 374(1967) |
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