Journal of Ocean Engineering and Technology (한국해양공학회지)
- Volume 1 Issue 1
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- Pages.111-119
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- 1987
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- 1225-0767(pISSN)
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- 2287-6715(eISSN)
The effects of 3.5% NaCl solution on the corrosion fatigue crack propagation characteristics of SS41 steel
SS41강의 부식피로 균열 전파특성에 미치는 3.5% NaCl수용액의 영향
Abstract
The corrosion fatigue crack propagation characteristics of SS41 steel in 3.5% NaCl solution have been evaluated for loading frequencies of 1Hz and 0.2Hz. A sine wave loading profile was used for fatigue testing. Each test was carried out at a constant stress ratio, R(0.1). The main results are summarized as follows; 1. Fatigue crack propagation rate was higher in 3.5% NaCl solution than in air, higher in the base metal than in the weld metal, and higher at f =0.2Hz than at f =1Hz. 2. The crack closure level of the base metal was not influenced by cyclic frequencies, but that of the weld metal was much influenced. 3. When the crack closure effect was eliminated in the evaluation of crack propagation characteristics by using
Keywords
- corrosion fatigue;
- crack propagation;
- crack closure;
- effective stress intensity factor range;
- $\Delta K_{eff}$;
- base metal;
- weld metal;
- loading frequency