On the morphology and composition of κ-phases on localized corrosion in wire arc additive manufacturing nickel aluminum bronze
Bibliographic record
Abstract
This study explores the influence of κ-phase morphology and chemical composition upon localized corrosion in wire arc additively manufactured (WAAM) nickel aluminum bronze (NAB). In addition to electrochemical analyses, the study utilized focused ion beam (FIB) milling, scanning transmission electron microscopy (TEM), and x-ray microanalysis to examine microstructural features in WAAM-NAB samples after exposure to a chloride-containing environment. It was determined that κ-phases exhibited so-called ‘cathodic’ behavior relative to the α-phase; however, their nobility was affected not only by composition, but also by morphology. Notably, elongated κ-phases - despite being Ni-Al-rich - promoted localized corrosion, which is associated with their increased interfacial area. Work function and chemical potential analyses support that phase morphology can have a key role in localized corrosion. This work highlights the critical role of microstructure in governing corrosion mechanisms in WAAM-fabricated alloys and the key insights provided by characterization at the nanoscale.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".