Low-cycle fatigue behaviors of 316L austenitic stainless steels with different surface finishing in simulated pressurized water reactor primary water and an oxygenated, borated, lithiated high temperature water

Xiong, Yida; Watanabe, Yutaka; Shibayama, Yuki; Zhong, Xiangyu; Mary, Nicolas

doi:10.1016/j.corsci.2021.109709

Cited by 8 publications

(1 citation statement)

References 40 publications

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“…The detailed results have shown that austenite has a lower oxidation resistance than ferrite when compared to a non-DH environment, while the oxidation resistance of both phases decreased when in a charged DH environment. H significantly accelerates the ferrite oxidation due to it acting as the diffusion path for H. The water chemistry has an obviously complex effect on crack propagation in 309L, 308L and 316L SSs [11,19,20]. In a word, both fatigue loading and water chemistry have significant effects on cracking behavior.…”

Section: Introductionmentioning

confidence: 99%

Study on Corrosion Fatigue Behavior of 304L Austenite Stainless Steel in 325 °C High-Temperature Water Environment

Wu,

Liu,

et al. 2024

Metals

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The fatigue crack growth behavior of 304L austenitic stainless steel (SS) in a 325 °C high-temperature and high-pressure water environment were investigated by a corrosion fatigue test system, by electron back scatter diffraction (EBSD), and by a transmission electron microscope (TEM). The experimental results indicated that the crack growth rate (CGR) of 304L SS increases with increasing the stress intensity factor, stress level, and fatigue frequency (f). Compared to dissolved hydrogen (DH) in a high-temperature water environment, dissolved oxygen (DO) significantly enhances the CGR by about an order of magnitude higher. The crack tip of 304L SS after the corrosion fatigue test under higher stress levels is sharper, with more secondary cracks on the fracture surface, while the crack tip under lower stress levels is blunter with relatively fewer secondary cracks. The oxidation behavior at the crack tip was analyzed under different loading and water chemistry conditions, and a related effect on the crack tip and CGR was clarified.

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Section: Introductionmentioning

confidence: 99%