Molecular dynamics investigation of shock-induced microstructure evolution in single crystalline CoCrNi medium entropy alloy
Bibliographic record
Abstract
The atomic-scale deformation mechanisms under shock compression of single-crystal CoCrNi medium entropy alloy were investigated using molecular dynamics simulations. The anisotropic crystal properties significantly influence the elastic–plastic two-wave structure and the evolution of the microstructure. The results indicate that within the impact velocity range of 0.6–1.2 km/s, the [100] orientation exhibits a single-wave structure, although the mechanisms of plastic deformation differ. The plastic deformation of the single-crystal sample along the [100] direction is primarily governed by stacking faults and dislocation slip at lower impact velocities. However, as the shock velocity increases, the deformation mechanism transitions to a phase-transformation-mediated mode. In contrast, along the [110] and [111] directions, elastic–plastic two-wave structures are distinctly observed, accompanied by a plethora of dislocations with dislocation slip and the formation of disordered structures serving as the predominant plastic deformation mechanism.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 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".