原子能科学技术Issue(11)：1960-1964,5.DOI:10.7538/yzk.2014.48.11.1960
316 LN 在模拟压水堆一回路异常水化学条件下的应力腐蚀敏感性研究
Study on Stress Corrosion Cracking Susceptibility of 316LN in Simulated Primary Loop of PWR Under Abnormal Water Chemistry Conditions
摘要
Abstract
It was studied that the effects of chloride ions and dissolved oxygen on stress corrosion cracking (SCC) behavior of 316LN stainless steel in simulated primary loop of pressure water reactor (PWR) under abnormal water chemistry conditions with slow strain rate test (SSRT ) method .The results show that in saturated oxygen condition , the extension of specimens decreases gradually while the SCC sensitive index increases with the increase of chloride ions concentration .In addition ,the samples will produce SCC in the case that the concentration of chloride ions is more than 1 mg/L .However , cracks are not initiated in de‐aerated solution even if the concentration of chloride ions increases to 10 mg/L .The stress corrosion cracks of 316LN are initiated in defects or Cr‐depleted zones at the surface and transgranularly propagates into the base metal .关键词
慢应变速率拉伸试验法/应力腐蚀开裂/氯离子/溶解氧Key words
SSRT method/SCC/chloride ion/dissolved oxygen分类
矿业与冶金引用本文复制引用
唐占梅,胡石林,张平柱..316 LN 在模拟压水堆一回路异常水化学条件下的应力腐蚀敏感性研究[J].原子能科学技术,2014,(11):1960-1964,5.基金项目
大型先进压水堆核电站重大专项资助项目 （）
