Morphology of β-Al5FeSi Phase in Al-Si Cast Alloys
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Bibliographic record
Abstract
The β-Al5FeSi platelets have long been thought to be brittle and responsible for the inferior mechanical properties of Al-Si cast alloys. Two typical cracks, transverse and longitudinal, are commonly observed in β-Al5FeSi platelets. It is thought that the cracks are probably due to the presence of doubled-over oxide films (bifilm) though some transverse cracks may be due to the brittleness. The crack is actually the gap between the two dry sides of an entrained oxide film. Its wetted sides are the favoured substrates for the nucleation and growth of β-Fe platelets. This discovery of the formation of β-Fe platelets on folded films has answered many previously intractable questions encountered in β-Fe phase. For the future, one may speculate that if oxide films could be eliminated from Al melts, it may prove possible to create alloys with unusually high toughness, despite high Fe contents.
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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 it