Effects of Mn content on bending formability of extruded AZ31 magnesium alloy pipes
Bibliographic record
Abstract
Formability of extruded round AZ31 magnesium alloy pipes with different manganese concentrations was evaluated by performing bending tests and measuring strain along the length of the pipes during the bending process. It was found that an increase in the amount of manganese content from 0.3% to 0.7% did not exert any significant effect on the values of yield stress, elongation, or compression to fracture, while the values of hardness tended to increase and UTS decreased. The compression ductility was significantly lower than tensile ductility for all manganese concentrations. Accordingly, the formability of pipes decreased, causing cracks in areas where compression strain occurred during bending. It was also found that a larger strain occurred in the latter half of the region along the length of pipe between the clamp-end and pipe positioning block. For alloy pipes with higher manganese concentrations (0.5 and 0.7 Mn mass%), there was a clear strain peak occurring in the strain profile in the region, while for the 0.3 Mn mass% alloy pipe it exhibited a more uniform strain profile along the length of the pipe in this region, indicating that a more uniform deformation took place which was confirmed by microstructure analysis of the specimens.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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".