1 Dynamic Impact Behavior of 6061-T6 and 5083-H131 Aluminum alloys
Bibliographic record
Abstract
The results of a comparative study on microstructural evolution and damage in 6061-T6 and 5083-H131 aluminum alloys tested at high strain rates are discussed. Cylindrical samples of these alloys were tested in compression using instrumented direct impact Hopkinson Bar. Retention of heat and intense thermal softening along narrow bands during impact resulted in inhomogeneous deformation caused by shear strain localization along these bands. Deformed bands consisting of highly distorted and elongated grains were observed in the Aluminum 5083-H131 alloy after high velocity impact. On the other hand, adiabatic shear bands that look similar to the white etching bands commonly found in hardened steels were observed in the Aluminum 6061-T6 alloy. Whereas grain coarsening occurred inside the adiabatic shear bands in the Aluminum 5083-H131 alloy, the adiabatic shear bands in Aluminum 6061-T6 alloy were observed to contain much finer grains than the bulk material. 1.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".