Effect of cooling rate on solidification characteristics of aluminium alloy AA 5182
Bibliographic record
Abstract
Microstructural reactions during solidification of aluminium alloy AA 5182 were investigated using cooling curve analysis to determine the start temperature of the various transformations and the overall evolution in solid fraction. Three cooling rates were studied: 0.5 K s -1 , 1 K s -1 and 2 K s -1 . The key finding of the study is that the main eutectic reaction and subsequent reactions, including Mg 2 Si formation, occur at much lower temperatures and higher solid fractions than previously published. The primary eutectic was found to precipitate between 575 and 588 °C, which corresponds to a solid fraction between 0.87 and 0.91, and Mg 2 Si was found to precipitate between 551 and 560 °C, which corresponds to a solid fraction between 0.96 and 0.97. Increasing cooling rate was observed to result in a slight increase in solid fraction for primary eutectic precipitation from 0.87 - 0.88 at the low cooling rate to 0.89 - 0.91 at the intermediate cooling rate and 0.91 at the highest cooling rate. The highest cooling rate also resulted in a drop in solidus temperature to 461 °C from 500 - 510 °C (at the low and intermediate cooling rates) that led to an increase in the solidification interval from 123 K to 151 K.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| 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 source (direct Gemma or distilled Codex), 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".