Effect of CP on the Occurrence of SCC in X80 and X100 Pipe Steels in a Near-neutral pH Environment
Bibliographic record
Abstract
Abstract In this work, stress corrosion cracking (SCC) of X80 and X100 pipe steels under various cathodic protection (CP) levels in near-neutral pH environment was investigated. The results showed that X100 tended to form longer SCC cracks compared to X80 steel. The crack depth exhibited normal/quasi-normal distributions for both materials. Only a small fraction of cracks within the total number of cracks formed would propagate deep into the steel. It was revealed that the effect of CP on the occurrence of SCC in X80 and X100 steels was different. For X80 steel, CP exhibited an inhibiting effect on both SCC crack initiation and propagation by controlling the anodic dissolution process of steel and the inhibiting effect increased with CP level. The mitigating effect of CP on crack initiation was more significant than that on crack propagation. For X100 steel, it was observed that hydrogen evolution and absorption played an important role in crack initiation, while anodic dissolution of steel dominated the crack propagation process. The increase of CP level could cause more cracks to initiate but retard the crack propagation.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".