Formation of nitrided layer using atmospheric-controlled IH-FPP and its effect on the fatigue properties of Ti-6Al-4V alloy under four-point bending
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Bibliographic record
Abstract
The purpose of this study is to develop a rapid nitriding using a surface modification which is a combination of atmospheric-controlled induction-heating fine particle peening (AIH-FPP) and nitrogen gas blow. AIH-FPP was performed for titanium alloy (Ti-6Al-4V ELI grade) at 1173 K for 180 s in a controlled nitrogen atmosphere with an oxygen concentration less than 10 ppm without supplying particles. A nitrogen compound (TiN) was formed on the AIH-FPP treated surface, which results in increasing the surface hardness of Ti-6Al-4V alloy. To examine the effect of AIH-FPP on the fatigue properties of Ti-6Al-4V alloy, four-point bending fatigue tests were performed at a stress ratio of 0.1 in air at room temperature. It was found that the AIH-FPP treated specimens showed low fatigue limit due to the formation of a brittle compound layer and coarse microstructure.
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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