Internal oxidation of Alloy 600 exposed to hydrogenated steam and the beneficial effects of thermal treatment
Internal oxidation of Alloy 600 exposed to hydrogenated steam and the beneficial effects of thermal treatment
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DOI：
10.1016/j.corsci.2014.04.041
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发表时间：
2014-09
影响因子：
8.3
通讯作者：
S. Persaud;A. Korinek;J. Huang;G. Botton;R. Newman
中科院分区：
文献类型：
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作者：
S. Persaud;A. Korinek;J. Huang;G. Botton;R. Newman
将固溶退火（SA）和热处理（TT）条件下的合金600暴露于被认为模拟压水反应堆中的一次水的氢化蒸汽环境。使用内氧化模型评估了可能的一次水应力腐蚀开裂（PWSCC）敏感性。FIB用于提取合金600样品的横截面，并生成元素图;在所有情况下均观察到颗粒内氧化，导致金属镍排出到表面。在SA样品中观察到晶间氧化和脆化，而在TT样品上形成厚而致密的富Cr氧化物。
Alloy 600 in the solution annealed (SA) and thermally treated (TT) conditions was exposed to a hydrogenated steam environment considered to simulate primary water in pressurized water reactors. The likely susceptibility to primary water stress corrosion cracking (PWSCC) was evaluated using the internal oxidation model. A FIB was used to extract cross-sections from Alloy 600 samples and elemental maps were generated; internal oxidation was observed intragranularly in all cases, resulting in expulsion of metallic nickel to the surface. Intergranular oxidation and embrittlement was observed in SA samples, while a thick and dense Cr-rich oxide was formed intergranularly on TT samples.