Stress corrosion cracking of alloy 600 in high temperature aqueous solutions: Influencing factors, mechanisms and models
- Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
A detailed critical review of the multiple variables affecting stress corrosion cracking (SCC) of in high temperature (deaerated) aqueous solutions is given. Most of the data in the literature deals with the cracking susceptibility in the primary side; however, it is clear that similar factors and to a similar extent influence the SCC susceptibility in both primary and secondary sides. Some factors such as alkalinity of the solution or presence of lead (Pb) may be more in the secondary side and others such as partial pressure of hydrogen (H{sub 2}) in the primary side. Even though the effect of the variables on SCC susceptibility is more or less established, in models, in most of the cases there is a lack of fundamental understanding of the mechanisms involved. The different mechanisms and models proposed to explain the SCC of alloy 600 are briefly reviewed and their validity to explain the influence of the variables and to predict the crack growth rate (CGR), is assessed. It is concluded that several of the proposed models seem to give a fair estimate of the CGR values under certain conditions; however, it appears that a single mechanism cannot explain in detail the complex case of alloy 600 SCC. 113 refs., 11 figs., 3 tabs.
- OSTI ID:
- 409737
- Report Number(s):
- CONF-9510292-; ISBN 1-57570-008-4; TRN: 97:000739
- Resource Relation:
- Conference: Improving the understanding and control of corrosion on the secondary side of steam generators, Airlie, VA (United States), 9-13 Oct 1995; Other Information: PBD: 1996; Related Information: Is Part Of Control of corrosion on the secondary side of steam generators. Proceedings; Staehle, R.W. [ed.] [Univ. of Minnesota, Minneapolis, MN (United States)]; Gorman, J.A. [ed.] [Dominion Engineering, McLean, VA (United States)]; McIlree, A.R. [ed.] [Electric Power Research Inst., Palo Alto, CA (United States)]; PB: 814 p.
- Country of Publication:
- United States
- Language:
- English
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