通过腐蚀增重试验和慢应变速率试验(SSRT)研究了25Cr-20Ni-ODS钢在超临界水(SCW)中的腐蚀性能.结果表明:25Cr-20Ni-ODS钢在超临界水中的耐蚀性较好,腐蚀1000 h后其腐蚀速率非常低;在600℃超临界水环境中试样发生了沿晶应力腐蚀开裂(IGSCC),且IGSCC敏感性随着溶解氧含量的增加而提高;而在650℃下,试样的断裂失效方式为塑性断裂,并没有观察到应力腐蚀开裂迹象.
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