Effect of shot peening temperature on the microstructure induced by surface severe plastic deformation on an austenitic stainless steel
Why this work is in the frame
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Bibliographic record
Abstract
The mechanisms of microstructure modifications were investigated for a 316 L austenitic stainless steel subjected to Surface Mechanical Attrition Treatment (SMAT) across a wide temperature range (143 K to 773 K) and their effects on hardness and residual stresses evolutions determined. The research highlights how temperature modulates deformation mechanisms , transitioning from Transformation-Induced Plasticity (TRIP) and Twinning-Induced Plasticity (TWIP) at low temperatures to dislocation glide and dynamic recrystallization at elevated temperatures. These transitions lead to a distinct trade-off: while cryogenic SMAT enhances surface hardness and compressive residual stresses , warm SMAT, particularly at 773 K, facilitates the formation of a thick refined surface layer due to thermal softening effect and increases the deformation and residual stress gradient depth. This study provides new insights into tailoring surface properties through controlled temperature during SMAT, offering pathways to enhance mechanical performance for advanced applications.
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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