Abstract
The effect of impurities on the threshold stress intensity for cracking in H2S (K{ISCC}) has been investigated at various yield strength levels for a low alloy steel. Results show that the effect of impurities on KISCC is a function of the yield strength level. At low yield strength levels the KISCC of the steel is lowered markedly due to additions of impurities. However, at higher yield strength levels the KISCC data for pure and impure steels converge to a single value. In addition, the effect of yield strength level on Xiscc is a function of the degree of temper embrittlement caused by impurity segregation. For small degrees of temper embrittlement, increasing the yield strength decreases the -Kiscc appreciably, while for large degrees of temper embrittlement,K ISCC is relatively insensitive to the yield strength. At KISCCvalues below about 50 MPa Vm, the percentage of intergranular fracture in H2S is found to be uniquely related to KISCC regardless of the yield strength-impurity combination by which a givenK ISCC is obtained. Results of the study indicate that the KISCC OF steels is affected by impurities, yield strength and H2S both directly and indirectly via interactive mechanisms.
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Refererence
J. R. Low, Jr.:Fracture of Engineering Materials, ASM, p. 127, 1964.
R. Viswanathan:Met. Trans., 1971, vol. 2, p. 809.
B. J. Schulz and C. J. McMahon:ASTM STP 479, 1972, p. 104.
R. D. McRight and R. W. Staehle: Int. Conf. on Stress Corrosion Cracking and Hydrogen Embrittlement of Iron Base Alloys, Firminy, France, June, 1973.
Work of R. Smialowski as reported by A. R. Elsea and E. E. Fletcher: DMIC Report 219, Battelle Memorial Inst., June, 1965.
K. Yoshino and C. J. McMahon, Jr.:Met. Trans., 1974, vol. 5, p. 363.
U. Q. Cabrai, A. Hache, and A. Constant:C. R. Acad Sci., Paris, 1965, vol. 260, p. 6887.
J. L. Gray: Proc. I. Mech. E, 1972, vol. 186, p. 379.
D. Kalderon: Proc. I. Mech. E, 1972, vol. 186, p. 341.
de G. Jones, J. F. Newman, and Harrison: Paper presented at the Fifth Intl. Congress on Metallic Corrosion, Tokyo, 1972.
R. P. Harrison, D. de G. Jones, and J. F. Newman: Intl. Conf. on Stress Corrosion and Hydrogen Embrittlement, Unieux-Firminy, France, Paper E5, June, 1973.
D. P. Dautovich and S. Floreen:Met. Trans., 1973, vol. 4, p. 2627.
E. T. Wessel: Eng. Fract. Mech., 1968, vol. 1, p. 77.
W. G. Clark, Jr. and J. D. Landes:Stress Corrosion-New Approaches, ASTM STP610, p. 108, 1976.
P. Mclntyre and A. H. Priest: British Steel Corporation, Report MG/31/72, 1972.
R. Viswanathan and S. J. Hudak, Jr. :Effect of Hydrogen on Behavior of Materials, A. W. Thompson and I. M. Bernstein, eds., p. 262, 1975, The Metallurgical Society of AIME.
P. W. Palmberg, G. E. Riach, R. E. Weber, and N. C. McDonald:Handbook of AES, Physical Electronics Industries, Inc., 1972.
W. W. Gerberich and Y. T. Chen:Int. J. of Fract., 1973, vol. 9, p. 369.
R. Viswanathan and A. Joshi:Met. Trans. A, 1975, vol. 6A, p. 2280.
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Viswanathan, R., Hudak, S.J. The effect of impurities and strength level on hydrogen induced cracking in a low alloy turbine steel. Metall Trans A 8, 1633–1637 (1977). https://doi.org/10.1007/BF02644870
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DOI: https://doi.org/10.1007/BF02644870