The mixed mode Ⅰ/Ⅱ TGSCC behavior of X-70 pipeline steel  

作　　者：WANG ZhiYing WANG JianQiu HAN EnHou KE Wei 

机构地区：[1]State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 China [2]School of Materials Science and Engineering, University of Materials Science and Technology Liaoning, Anshan 114051, China

出　　处：《Chinese Science Bulletin》2009年第19期3453-3457,共5页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 50499336);the Hundred Talent Project

摘　　要：The mixed mode Ⅰ/Ⅱ SCC behavior of X-70 pipeline steel in the Xinjiang soil solution was investigated using single edge-notched specimens loaded in anti-symmetric and symmetric four-point bending configurations in laboratory. The results show that a maximum tensile stress criterion provides a good description for the mixed mode Ⅰ/Ⅱ SCC of X-70 pipeline steel in the near neutral pH solution, and the mixed mode TGSCC crack growth rate is larger than that of the mode Ⅰ TGSCC. The magnitude increase of the crack growth rate decreases with the increase of the mode Ⅱ loading.The mixed mode Ⅰ/Ⅱ SCC behavior of X-70 pipeline steel in the Xinjiang soil solution was investigated using single edge-notched specimens loaded in anti-symmetric and symmetric four-point bending configurations in laboratory. The results show that a maximum tensile stress criterion provides a good description for the mixed mode Ⅰ/ⅡSCC of X-70 pipeline steel in the near neutral pH solution, and the mixed mode TGSCC crack growth rate is larger than that of the mode Ⅰ TGSCC. The magnitude increase of the crack growth rate decreases with the increase of the mode Ⅱ loading.

关 键 词：钢管道 TGSCC 实验室 腐蚀 防护 

分 类 号：U177[交通运输工程]