Oxidation Resistance and Stress Corrosion Cracking Susceptibility of 308L and 309L Stainless Steel Cladding Layers in Simulated Pressurized Water Reactor Primary Water
| Autor: | Jiarong Ma, Zhanpeng Lu, Yibo Jia, Junjie Chen, Shuangliang Yang, Qi Xiong, Kun Zhang, Tongming Cui, Zhimin Zhong, Sergio Lozano-Perez, Tetsuo Shoji, Hui Zheng |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science General Chemical Engineering Metallurgy Pressurized water reactor 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Cladding (fiber optics) 01 natural sciences law.invention law 0103 physical sciences General Materials Science Stress corrosion cracking 0210 nano-technology Oxidation resistance |
| Zdroj: | Corrosion. 77:878-895 |
| ISSN: | 1938-159X 0010-9312 |
| Popis: | Exposure and slow strain rate tensile tests were conducted in a simulated pressurized water reactor (PWR) primary water to investigate the oxidation resistance and stress corrosion cracking (SCC) susceptibility of 308L and 309L stainless steel (SS) cladding layers. A double-layer structure oxide layer grown on 308L SS and 309L SS contained the Cr-enriched nanocrystalline internal layer and the Fe-enriched spinel oxide in the external layer. Ni-enrichment at the matrix/oxide boundary was observed. The internal oxide film on 309L SS was thicker and had a lower Cr content than that on 308L SS. Preferential dissolution of inclusions led to pits on 308L SS and 309L SS surfaces during the exposure tests. More inclusions in 309L would decrease its SCC resistance due to the pits’ ability to act as the SCC initiation site. 308L SS had a lower susceptibility to SCC than 309L SS in PWR primary water. Lower ferrite content and higher strength/hardness reduced the oxidation and SCC resistance of 309L SS cladding. The effect of ferrite on oxidation and SCC of the SS claddings is discussed. |
| Databáze: | OpenAIRE |
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