Transient Liquid Phase Bonding of Newly Developed HAYNES 282 Superalloy
Bibliographic record
Abstract
Transient Liquid Phase Bonding (TLP) of Haynes 282 was performed to study the influence of process parameters on TLP joint microstructure in the newly developed superalloy. Insufficient holding time for complete isothermal solidification of liquated insert caused formation of eutectic-type microconstituent along the joint centerline region. In contrast to general expectation, an increase in bonding temperature above a certain temperature resulted in a decrease in isothermal solidification rate and formation of the centreline eutectic that was avoided with same holding time at a lower temperature. Application of finite element numerical simulation showed that the anomalous behaviour can be explained by deviation from parabolic relationship between solid/liquid interface migration and holding time induced by reduction in solute concentration gradient in the solid substrate below a critical value. Comparison of the present experimental results in Haynes 282 with those in other nickel based superalloys, like IN 738, shows that the undesirable reduction in isothermal solidification rate is significantly less pronounced in the Haynes 282. This is attributable to a more extensive formation of interface Mo-rich borides in the new alloy, which can relieve boron saturation in the matrix phase and, thus, lessens the occurrence of the deviation phenomenon.
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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 | 0.000 | 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 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".