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Abstract The author studied the SCC mechanism of 34CrNi3Mo steel in 30% NaOH solution, through potentiostatic SCC test based on fracture mechanics, electrochemical hydrogen permeation, acoustic emission and electrofractography.The results showed that above 50℃ SCC can occur when the potential is at free corrosion potential.When at 80℃, the potential is more positive than-1150mV (SCE) , the cracking belongs to active path corrosion (APC) type of SCC; When the potential is more negative than-1150mV (SCE) , the cracking belongs to hydrogen embrittlement (HE) type of SCC.Even in the same steel—environment system the mechanism of SCC may be changeable.Therefore it is not proper to say that SCC is only governed by a single mechanism.
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Received: 25 February 1983
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[1] Troiano, A. R., The Role of Hydrogen and other lnterstitials in the Mechanical Behavior of Metals, Trans. ASM, 52, 54(1960)
[2] Troiano, A. R., in "Hydrogen in Metals" , Ed. by I. M. Bernstein and A . W . Thompsm, ASM, 12(1974)
[3] Snape, E., Br. Corros. J., 4, September, 253(1969)
[4] Kortovich, C. S., A Corrosion of Hydrogen Embrittlement and SCC in High Strength Steel, July, 15 ( 1971)
[5] Wilde, B. E., Corrosion, 27, 326(1971)
[6] Gerberich, W. W. and Harbower C. E., 同 3． P. 420
[7] Dunegan, H. L. and Tetelman A. S., Eng. Fracture Mechanics, 2, 387(1971)
[8] 冈田秀弥,材料科学,13,(1～3) ,24(1976)
[9] ASTM Desig. E399-74, 1976, Ann. Book of ASTM standards, Part 10, P. 471
[10] 徐克薰、苏立民,电化学技术测氢渗透瞬变行为研究钢的氢脆,中国腐蚀与防护学报,5,1,1(1933)
[11] 肖纪美,化学介质与断裂过程,北京钢铁学院,14(1979)
[12] Bohnenkamp,K., Proceeding of Conference of Fundamental Aspects of Stress Corrosion Cracking, NACE, Houston, Texas, 374(1967)
[13] #12
[14] Choi, J. Y., Met. Trans., 1, 911(1970) ,
[15] Towsend, H. E., Corrosion, 24, 261(1968)
[16]#12
[17] R. S. Shalvoy, S. K. Duglin, and R. J. Lindinger, Corrosion, 37,9, 491(1981) |
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