Microstructure and fluidity evolution during recycling of Al–B <sub>4</sub> C metal matrix composites
Bibliographic record
Abstract
Fluidity of metal matrix composites can greatly influence the recyclability of the material in the conventional ingot metallurgy process. The fluidity evolution of the AA6063–10% B 4 C composite in the form of cast billets and extruded plates, as well as the AA1100–16% B 4 C composite of cast ingots and rolled sheets was investigated by the vacuum fluidity test. The results showed that the fluidity decline of cast billets was much faster than that of extruded plates. However, the fluidity of both the cast ingots and rolled sheets decreased at the same rate with the holding time. To understand the flow behavior and recyclability of different composites, the microstructure of process materials before and after remelting was examined. The distribution of B 4 C particles and their reaction products, as well as the effective volume fraction, were quantitatively characterized. It was found that the fluidity of the extruded material, hence its recyclability, was better than that of the cast material due to a more uniform particle distribution and less particle agglomerates. Contrary to the extruded material, the rolled material did not show any fluidity improvement to the cast material due to damage of the TiB 2 protective layer around the B 4 C surfaces during severe rolling deformation.
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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) | 0.001 | 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".