Surface Property Enhancement of Al–Si–Cu Alloy Coating by Fast Multiple Rotation Rolling
Why this work is in the frame
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Bibliographic record
Abstract
Herein, the effect of high rotational speed fast multiple rotations rolling (FMRR) on the microstructure, mechanical properties, and wear resistance of an Al–Si–Cu alloy coating friction surfaced on AA1050 aluminum alloy is investigated. The FMRR process is performed at a rotational speed of 3000 rpm with traverse speeds of 50, 80, 110, and 140 mm min −1 . The microstructure, mechanical properties, and wear resistance are examined by optical microscope, scanning electron microscope, electron backscatter diffraction, transmission electron microscope, nanoindentation test, microhardness test, and pin‐on‐disc wear test. The results show that as the traverse speed increases from 50 to 140 mm min −1 , surface roughness decreases from 6.3 ± 0.3 to 3.2 ± 0.2 μm. Additionally, with the increase in traverse speed, the coating height increases from 3.8 ± 0.3 to 4.7 ± 0.4 mm, while the coating width decreases from 37.1 ± 1.1 to 25.4 ± 1.3 mm. Furthermore, as the traverse speed increases from 50 to 140 mm min −1 , the average hardness of the FMRR‐processed layer increases from 5.6 ± 0.6 to 10.2 ± 0.6 GPa. At a traverse speed of 140 mm min −1 , the wear resistance of the FMRR‐processed layer increases by 20% compared to the Al–Si–Cu alloy consumable rod.
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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)
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 it