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.
基金
Supported by the National Natural Science Foundation of China (Grant No. 50499336)
the Hundred Talent Project
关键词
钢管道
TGSCC
实验室
腐蚀
防护
mixed mode Ⅰ/Ⅱ, TGSCC, pipeline steel, near neutral pH
