Effects of the laser spot size and beam wobbling on the properties of aluminum 6061 weld metal
Why this work is in the frame
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Bibliographic record
Abstract
The effects of the spot size and beam wobbling on the mechanical properties and microstructure of the AA 6061 aluminum alloy during laser welding have been investigated. Changing the spot size from 0.6 to 0.3 mm reduced the required heat input for full penetration by 56% for a static laser beam and by 62% for a wobbling laser beam. Using a 0.3 mm diameter spot with beam wobbling reduced the severity of surface defects such as undercuts and excessive reinforcement. When the heat input and bead width were increased, laser beam wobbling increased the width of the equiaxed microstructure region in the weld metal. Grain refinement and the reduction in solute strengthening due to evaporation only had small effects on the weld metal strength.
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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 | 0.001 | 0.001 |
| 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 | 0.001 |
| 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