Dependence of Stress Corrosion Crack Velocity on Strain Rate for a Binary Noble-Metal Alloy
Bibliographic record
Abstract
A published analysis of crack growth rate under ohmic control in a slow strain rate test is modified slightly to take account of a crack growth mechanism involving periodic cleavage or brittle intergranular fracture nucleated by a dealloyed layer. Assuming that a critical layer thickness must form to trigger each cleavage event, and that a surface-dealloyed layer is available to start the process off at zero strain, we obtain the following result: at low strain rate (s), the dependence of crack velocity (v) on s is close to v ~ s0.5, while at high strain rate the slope increases smoothly until it becomes v ~ s. At the highest strain rates we are not really dealing with stress corrosion cracking, since all that is happening is a single brittle event at the start of the test, followed by plastic strain to failure. The results of this calculation are consistent with data published by Serebrinsky and Galvele, who interpreted the behavior using the surface mobility model, even at strain rates higher than 1,000%/s.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 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) | 0.000 | 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 teacher head, 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".