Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 743, Issue -, Pages 243-250Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.11.081
Keywords
Stainless steel; Corrosion fatigue; High-temperature water; Strain amplitudes; Environmental fatigue correction factor
Categories
Funding
- Key Programs of the Chinese Academy of Sciences (Research on the Development of Nuclear Power Materials and Service Security Technology) [ZDRW-CN-2017-1]
- National Natural Science Foundation of China [51601201, 51671201]
- National Science and Technology Major Project [2017ZX06002003-004-002]
- Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences [SCJJ-2013-ZD-02]
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Corrosion fatigue (CF) behavior of 316LN stainless steel under different strain amplitudes (0.3-0.8%) in 325 degrees C water was investigated at a strain rate of 0.04% s(-1). It was found that the fatigue life and strain amplitude has a linear relation in double logarithmic coordinate. The environmental damage increased with decreasing strain amplitudes. The synergistic effect of mechanical and environmental damages during the CF process in high. temperature pressurized water is discussed, and a calculation equation for environmental fatigue correction factor F-en is proposed to calculate the strain amplitude effect.
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