Effect of nickel and vanadium on iron bearing intermetallic phases in AA 5657 simulated DC castings
Why this work is in the frame
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Bibliographic record
Abstract
The effect of Ni and V trace additions at various levels on the transition and distribution of Fe bearing intermetallic phases on AA 5657 was investigated with a direct chill casting simulator. Phase identification and quantification were performed using a combination of SEM, electron backscattered diffraction, energy dispersive spectrum and image analysis techniques to accurately evaluate the effect of Ni and V on ingot microstructures. The Ni addition promotes Al 3 Fe and α-AlFeSi while suppressing Al m Fe. At high Ni levels, a new Ni rich AlFeNi phase was observed. On the other hand, V strongly encourages Al m Fe and lowers the critical cooling rates of the phase formation. However, at low Ni or V levels (70–150 and 170–240 ppm respectively), the effect of Ni and V on phase selection is still weak and may not significantly affect the material properties. A counteractive effect of the combined Ni and V additions on the phase selection was observed.
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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 | 0.001 |
| 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 it