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Keywords: active path corrosion
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Proceedings Papers

Effects of Trench Generated by Ni on SSC Initiation Limits for Low-Alloy Carbon Steels

Taishi Fujishiro, Taro Muraki, Daichi Izumi, Nobuyuki Ishikawa, Takuya Hara, Eiji Tada, Koji Fushimi, Mitsuo Kimura
... embrittlement Active path corrosion Carbon steel INTRODUCTION In the oil and gas industry, oil-country tubular goods and line pipes are exposed to wet H2S environments (sour environments). The presence of H2S in a sour environment enhances hydrogen ingress into steel because...
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Proceedings Papers

Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 2: Four Point Bend Test

Nobuyuki Ishikawa, Taishi Fujishiro, Eiji Tada, Daichi Izumi, Junji Shimamura, Takuya Hara, Mitsuru Kimura
... was enhanced by Ni addition. It was also found that the material with higher hardness and higher H2S partial pressure showed higher susceptibility to form the stress groove. Yamane proposed SSC mechanism that crack growth is first controlled by anodic dissolution, or active path corrosion...
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Proceedings Papers

Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 1: Constant-load (Dead-weight) Test

Taishi Fujishiro, Taro Muraki, Nobuyuki Ishikawa, Daichi Izumi, Takuya Hara, Eiji Tada, Mitsuo Kimura
... promoted SSC, suggesting that SSC was affected by both active path corrosion (APC) and hydrogen embrittlement (HE) mechanisms. In addition, the fissure shapes and crystal orientations of the microstructure were analyzed to classify the fissures as dissolution (corrosion) or mechanical cracking. Further...
View Paper titled, Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 1: Constant-load (Dead-weight) Test
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