Synopsis
Low cycle corrosion fatigue (CF) crack growth rate of a high- tensile strength steel HT80 has been measured in ASTM synthetic sea water at free corrosion and under a cathodic potential, and 3-dimensional fracture surface analysis has been conducted by using a computer image processing technology. The CF crack growth characteristics under a cathodic potential can not be explained in terms of ΔK eff since calcareous deposits-induced wedge effect enlarges region H in hysteresis loops. The modified effective stress intensity ΔK cont proposed as a dominating mechanical parameter for CF crack growth. The crack closing simulation by means of the 3-dimensional fracture surface topography accounts for the wedge effect induced by the corrosion products or the calcareous deposits as a first approximation.
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References
Komai, K., Minoshima, K. and Yamamoto, K., “Corrosion Fatigue Crack Growth in a high-tensile Strength Steel under Cathodic Overprotection”, Proceedings of 28th Japan Congress on Materials Research, March, 1985, pp. 81–85.
Komai, K., Kita, S. and Endo, K., “Corrosion Fatigue Crack Growth of a High-tension Steel in NaCl Solution”, Bulletin of Japan Society of Mechanical Engineers, Vol.27, May, 1984, pp. 847–853.
Komai, K. and Nagano, S., “Influence of Stress Cycle Frequency and Stress Ratio on Corrosion Product-induced Wedge Effect”, Bulletin of Japan Society of Mechanical Engineers, Vol.29, Dec., 1986, pp. 3973–3978.
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© 1987 Elsevier Applied Science Publishers Ltd
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Komai, K., Noguchi, M. (1987). Low Cycle Corrosion Fatigue of High Tensile Strength Steel and Image Processing of Fracture Surfaces. In: Rie, KT. (eds) Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3459-7_51
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DOI: https://doi.org/10.1007/978-94-009-3459-7_51
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8049-1
Online ISBN: 978-94-009-3459-7
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