A study on laser welding of dissimilar joints of Ti6Al4V and AA7075 using a cu interlayer: Mechanical properties and corrosion behaviour
Bibliographic record
Abstract
This study investigates the use of a copper (Cu) interlayer in dissimilar laser welding between AA7075 and Ti6Al4V alloys. The primary purpose of the Cu interlayer is to reduce the formation of brittle intermetallic compounds (IMCs), which can weaken the mechanical integrity of the welded joints. Corrosion performance was examined using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) tests. The findings reveal that incorporating the Cu interlayer significantly enhances the fusion between the dissimilar alloys, resulting in joints with improved mechanical strength (240 MPa) and corrosion resistance. Corrosion tests showed the joint had intermediate corrosion resistance (corrosion current density i Corr of 1.0297 × 10 <συπ>−5</sup> A/cm² and polarization resistance R p of 3.07 K Ω.cm 2 ) compared to the base material.
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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".