CORROSION FATIGUE CRACK GROWTH OF HIGH TENSILE STEEL HT60 IN SYNTHETIC SEA WATER

Acta Metall Sin

1991, Vol. 27

Issue (4): 121-126 DOI:

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CORROSION FATIGUE CRACK GROWTH OF HIGH TENSILE STEEL HT60 IN SYNTHETIC SEA WATER

GAO Hongbin Harbin Shipbuilding Engineering Institute

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GAO Hongbin Harbin Shipbuilding Engineering Institute. CORROSION FATIGUE CRACK GROWTH OF HIGH TENSILE STEEL HT60 IN SYNTHETIC SEA WATER. Acta Metall Sin, 1991, 27(4): 121-126.

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Abstract The corrosion fatigue crack growth and near-threshold characteristcsof high tensile steel HT60 were investigated by using the compact specimens underexposure to synthetic sea water. The da/dN vs △K_(eff) relation in air may be conser-vetivel estimated for that in sea water. In the high △K region with high stressratio, owing to the acceleration of crack growth promoted by stress-induced dissol-ution, the crack opening stress intensity factor K_(op) represents only the result ofcrack surface in contact with corrosion products, so as to give an overestimation ofK_(op) at crack tip.

Key words: corrosion fatigue crack growth crack closure synthetic sea water high tensile steel

Received: 18 April 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I4/121

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