管线钢在近中性pH值溶液中的应力腐蚀开裂  

STRESS CORROSION CRACKING OF PIPELINE STEEL 16Mn IN SOLUTIONS WITH NEAR NEUTRAL pH VALUES

作　　者：汪兵[1] 刘素娥[1] 朱自勇[1] 柯伟[1] 韩恩厚[1] 

机构地区：[1]中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016

出　　处：《腐蚀科学与防护技术》2001年第2期71-73,共3页Corrosion Science and Protection Technology

基　　金：国家重点基础研究专项经费资助! (G19990 65 0 )

摘　　要：用电化学极化测试技术、慢应变速率拉伸试验研究了管道钢 (16Mn钢 )在近中性 pH值溶液中的应力腐蚀行为 ,并探讨了外加电位、CO2 、温度等因素的影响 .结果表明 ,应力腐蚀开裂为氢脆型应力腐蚀开裂 ;随着阴极电位的增加SCC敏感性增大 ,溶液中加入CO2The stress corrosion cracking (SCC) behavior of pipeline steel (16Mn) in different solutions with near neutral pH values was studied with slow strain rate testing and electrochemical polarization technique.The effect of applied potential, CO 2 content and temperature on SCC behavior were investigated.The results showed that the crack development was mainly controlled by hydrogen-embrittlment stress corrosion cracking.Susceptibility to SCC increased as the cathodic potential increased.The addition of CO 2 to the solution also increased veidently the SCC.

关 键 词：近中性pH值溶液 管线钢 应力腐蚀开裂 

分 类 号：TG172.9[金属学及工艺—金属表面处理]