Effect of transition-elements substitution on mechanical properties and electronic structures of B2-AlCu compounds
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Bibliographic record
Abstract
The first-principles calculations have been performed to predict the effect of transition-elements substitution on mechanical properties and electronic structures of B2-AlCu compounds. The results show that Zn, Cd, La and Hg are preferred to replace Al atom, while other transition elements are preferred to replace Cu atom. Among the mechanically stable AlCu-TM compounds, the resistance of axial deformation is greater than that of shear deformation. According to Poisson's ratio and Pugh criteria, all compounds show ductility. The compounds of Al8Cu7Fe, Al8Cu7Tc and Al8Cu7Re exhibit excellent Young's modulus and Vickers hardness in fourth, fifth and sixth periods, respectively. The bulk moduli of all AlCu-TM compounds indicate a low degree of isotropic deviation, while the shear moduli have a large anisotropy. The analysis of the electronic structures of Al8Cu7Fe, Al8Cu7Tc and Al8Cu7Re demonstrates that metal bond and covalent bond are mixed, and the properties of covalent bond between TM and Cu are weak.
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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 | 0.000 |
| 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)
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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