Microcapillary Polarization of Friction Stir Welds in AZ31B Magnesium Alloy
Bibliographic record
Abstract
Corrosion of friction stir welds made in AZ31B magnesium alloy has been investigated using the microcapillary polarization technique. Various weld regions were examined in both spot and seam welds. The stir zone showed a higher reduction potential than the thermo-mechanically affected zone (TMAZ) and the base metal, due to the dissolution of β-Mg 17 Al 12 particles. The absence of second phase particles resulted in elimination of harmful microgalvanic cells between the β-Mg 17 Al 12 particles and the α-Mg matrix, and an increased concentration of aluminum in solid solution. The noble stir zone formed a macro galvanic cell with the base metal, which resulted in accelerated corrosion of the TMAZ. No significant variation in the electrochemical response of various weld zones was seen between seam and spot welds.
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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 | 0.000 | 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 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".