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| TiN夹杂物对690合金管在高温高压水中的腐蚀和应力腐蚀行为的影响 | |
| 引用本文： | 郦晓慧,黄发,王俭秋,韩恩厚,柯伟. TiN夹杂物对690合金管在高温高压水中的腐蚀和应力腐蚀行为的影响[J]. 金属学报, 2011, 0(7) |
| 作者姓名： | 郦晓慧 黄发 王俭秋 韩恩厚 柯伟 |
| 作者单位： | 中国科学院金属研究所腐蚀与防护国家重点实验室; |
| 基金项目： | 国家重点基础研究发展计划项目2011CB610502; 国家科技重大专项项目2011ZX06004-009资助~~ |
| 摘 要： | 利用TEM和SEM观察了690合金管中TiN夹杂物的存在形式及其分布状态,通过高温高压电化学实验和应力腐蚀浸泡实验研究了690合金管在高温高压水溶液中的腐蚀和应力腐蚀行为.TiN是690合金管中一种主要的夹杂物,随机分布在奥氏体基体中.模拟压水堆核电站一回路水化学条件的高温高压电化学实验及能谱测试表明,点蚀优先发生在690合金管中含Ti夹杂物处.高温高压含Pb碱溶液中的应力腐蚀浸泡实验显示,690合金管表面的TiN和基体结合处的基体侧是优先发生腐蚀的位置,分布在晶界上的TiN和基体结合处发生腐蚀后容易导致局部应力集中,从而诱发沿晶应力腐蚀开裂. |
| 关 键 词： | 690合金 TiN夹杂物 高温高压 应力腐蚀 |
INFLUENCES OF TiN INCLUSION ON CORROSION AND STRESS CORROSION BEHAVIORS OF ALLOY 690 TUBE IN HIGH TEMPERATURE AND HIGH PRESSURE WATER |
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| LI Xiaohui,HUANG Fa,WANG Jianqiu,HAN En-Hou,KE Wei State Key laboratory for Corrosion , Protection. INFLUENCES OF TiN INCLUSION ON CORROSION AND STRESS CORROSION BEHAVIORS OF ALLOY 690 TUBE IN HIGH TEMPERATURE AND HIGH PRESSURE WATER[J]. Acta Metallurgica Sinica, 2011, 0(7) | |
| Authors: | LI Xiaohui HUANG Fa WANG Jianqiu HAN En-Hou KE Wei State Key laboratory for Corrosion Protection |
| Affiliation: | LI Xiaohui,HUANG Fa,WANG Jianqiu,HAN En-Hou,KE Wei State Key laboratory for Corrosion and Protection,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016 |
| Abstract: | TEM and SEM were used for studying the existing forms and distribution states of TiN inclusions in alloy 690.The corrosion and stress corrosion behaviors of alloy 690 were investigated through high temperature high pressure electrochemical measurement and immersion tests.TiN particles are the main inclusion in alloy 690 and randomly distribute in austenitic matrix.Corrosion experiments showed that pitting corrosion occurs preferentially at the inclusions containing Ti with high potential in simulated primar... |
| Keywords: | alloy 690 TiN inclusion high temperature and high pressure stress corrosion |
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