采用慢应变速率试验(SSRT)技术研究了环境因素(温度、溶解氧、Cl~-)对压力容器用钢A533B在模拟PWR高温水中的应力腐蚀破袭(SCC)敏感性的影响。结果表明,溶解氧含量是影响A533BSCC敏感性的关键因素,Cl~-浓度的增加导致SCC敏感性增大。电化学测试结果表明,A533B在PWR水中的穿晶应力腐蚀破裂(TGSCC)与其表面膜钝化-活化转变密切相关。
The effects of temperature, dissolved oxygen and Cl~- on the susceptibility to SCC of the reactor pressure vessel steel A533B in simulated PWR high temperature water were investigated by slow strain rate tests (SSRT). It was shown that the content of diss
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