超级奥氏体不锈钢HR3C在SCW中的腐蚀行为

被引：3

作者：

沈朝 ^{[1
]}

杜东海 ^{[1
]}

孙耀 ^{[1
]}

张乐福 ^{[1
]}

徐雪莲 ^{[2
]}

机构：

[1] 上海交通大学核科学与工程学院

[2] 上海核工程研究设计院

来源：

腐蚀与防护 | 2014年 / 35卷 / 07期

关键词：

HR3C奥氏体不锈钢; 超临界水; SCC; 均匀腐蚀;

D O I：

暂无

中图分类号：

TG174.3 [腐蚀试验及设备];

学科分类号：

090303 [农业农村环境保护与治理（农业环境保护）];

摘要：

采用慢应变速率试验研究了超级奥氏体不锈钢HR3C在550℃/25 MPa、600℃/25 MPa和650℃/25MPa超临界水(SCW)中的应力腐蚀开裂(SCC)敏感性,以及在超临界650℃/25 MPa和次临界290℃/15.2MPa水中的均匀腐蚀性能。结果表明,随着温度的升高,HR3C的力学强度逐渐下降;试验后断面SEM表明材料在三种超临界工况下均具有SCC倾向;HR3C在超临界水条件下的腐蚀增重大致符合幂函数生长规律,而在次临界条件下的腐蚀重量变化却呈现出先减后增的特征。

引用

页码：662 / 667

页数：6

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