TY - JOUR
T1 - Field experiment of stress corrosion cracking behavior of high strength pipeline steels in typical soil environments
AU - Liu, Z. Y.
AU - Li, Q.
AU - Cui, Z. Y.
AU - Wu, W.
AU - Li, Z.
AU - Du, C. W.
AU - Li, X. G.
N1 - Publisher Copyright:
© 2017
PY - 2017/9/1
Y1 - 2017/9/1
N2 - In this study, the corrosion behaviors of four pipeline steels, i.e., X70, X80, X100, and X120, in acidic soil (Yingtan and Xishuangbanna), alkaline soil (Korla and Dagang), and dry sandy soil (Lhasa) in China were investigated using U-bend samples and notch crevice specimens by exposure testing. The morphologies and compositions of the corrosion products were analyzed by digital photography, scanning electron microscopy, and X-ray diffraction. The results indicated that all the tested pipeline steels exhibited stress corrosion cracking (SCC) susceptibility in the abovementioned three typical soils. The SCC susceptibility increased as the strength of the pipeline steels increased and as the soil pH decreased. In acidic soil, no relationship existed between the locations of SCC crack initiation and pitting occurrences. In alkaline soil, SCC cracks were mainly initiated at the bottoms of pits.
AB - In this study, the corrosion behaviors of four pipeline steels, i.e., X70, X80, X100, and X120, in acidic soil (Yingtan and Xishuangbanna), alkaline soil (Korla and Dagang), and dry sandy soil (Lhasa) in China were investigated using U-bend samples and notch crevice specimens by exposure testing. The morphologies and compositions of the corrosion products were analyzed by digital photography, scanning electron microscopy, and X-ray diffraction. The results indicated that all the tested pipeline steels exhibited stress corrosion cracking (SCC) susceptibility in the abovementioned three typical soils. The SCC susceptibility increased as the strength of the pipeline steels increased and as the soil pH decreased. In acidic soil, no relationship existed between the locations of SCC crack initiation and pitting occurrences. In alkaline soil, SCC cracks were mainly initiated at the bottoms of pits.
KW - Field test
KW - Pipeline steel
KW - Soil environment
KW - Stress corrosion cracking
UR - https://www.scopus.com/pages/publications/85019060230
U2 - 10.1016/j.conbuildmat.2017.05.058
DO - 10.1016/j.conbuildmat.2017.05.058
M3 - 文章
AN - SCOPUS:85019060230
SN - 0950-0618
VL - 148
SP - 131
EP - 139
JO - Construction and Building Materials
JF - Construction and Building Materials
ER -