Effect of C and Al Elements on High Resistivity and High Rigidity of Ultra-High Strength TiC<sub>(1−</sub><i><sub>X</sub></i><sub>)</sub>/Ti-Metal Matrix Composites Fabricated by Blended Elemental Reactive Sintering
Bibliographic record
Abstract
The effects of the C and Al content on the resistivity and rigidity of newly developed ultra-high strength titanium-based metal matrix composites (Ti-MMCs) fabricated using a technique that we refer to as blended elemental reactive sintering (BERS), were investigated. The composition of the MMCs was TiC(1−X)/Ti-6Al-4V and Ti-8.6Al-5.7V, which were compared with those for TiB/, SiC/and AlN/Ti-MMCs. The blended TiC reacted with Ti powder and transformed to TiC(0.50～0.62) during sintering. The resulting TiC(0.50～0.62)/Ti-8.6Al-5.7V exhibited a specific resistance of 2.3 μΩm, a Young's modulus of 135 GPa, and a tensile strength of 1.25 GPa, with a substantial elongation of approximately 2.5％. On the other hand, TiB/Ti-6Al-4V had excellent mechanical properties, but an extremely low electrical resistance because the conducting TiB particles have a resistivity of only 0.07 μΩm. Blended SiC and AlN also reacted with Ti powder during sintering and formed a brittle phase at the interface between the particles and the Ti matrix. As a result, Ti-6Al-4V MMCs that are suitable for use as structural materials could not be fabricated using BERS with SiC or AlN.
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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 | 0.005 | 0.001 |
| Meta-epidemiology (narrow) | 0.003 | 0.002 |
| Meta-epidemiology (broad) | 0.006 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.003 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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; both teacher heads agree on what is shown here.
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".