Abstract
To recycle Ti alloy scraps and enhance the functionality of the recycled scraps, we manufactured low-oxygen contented Ti-Mo-Si powders using two types of ternary Ti alloy ingots which were prepared by vacuum arc melting of Ti-Mo scrap with different amounts of Si. The weight ratio of Ti-Mo scrap was Ti:Mo=9:1 and Si contents in two alloy ingots were 1 and 2 wt%. The alloy powders were prepared by the hydrogenation-dehydrogenation process and the oxygen atoms were removed by the deoxidation in solid state method. We confirmed that the deoxidation process effectively reduced the oxygen content of Ti-Mo-Si alloy powder from 3,350 ppm to 1,700 ppm. In addition, we confirmed that the high-temperature oxidation resistance was increased by adding Si to Ti-Mo alloys. Thermal gravimetric analysis showed that the weight gain of powders by the oxidation was reduced from 8.85% for Ti-Mo to 7.5% for Ti-Mo-Si at 1,500 °C.
| Original language | English |
|---|---|
| Pages (from-to) | 521-524 |
| Number of pages | 4 |
| Journal | Metals and Materials International |
| Volume | 21 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2015.05.1 |
Keywords
- Oxidation
- Powder processing
- Recycling
- Thermal analysis
- Ti-Mo-Si
Quacquarelli Symonds(QS) Subject Topics
- Engineering - Mechanical
- Materials Science
- Physics & Astronomy
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