Abstract
Ti40 alloy (Ti-25V-15Cr-0.2Si) is a highly stabilized β type burn resistant titanium alloy. Its oxidation behavior was studied. The weight gain increases greatly with the oxidation temperature, and then decreases when the oxidation temperature is over 1000°C. The oxidized products at 600°C are TiO2 and V2O5. If the oxidation temperature is greater than 700°C, TiO2 becomes the main product due to the vaporization of V2O5. The oxide scale cracks and peels off, if the temperature is over 900°C. SiO has been evidenced in the porous oxides if the temperature is over 800°C, and it vanishes as a result of scale spallation at 1050°C. A small amount of Cr2O3 has also been detected inside the scales and distributes non-continuously. Reasons of the fast oxidation are analyzed, and an oxidation model is suggested.
Original language | English |
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Pages (from-to) | 211-216 |
Number of pages | 6 |
Journal | Materials Science and Engineering: A |
Volume | 316 |
Issue number | 1-2 |
DOIs | |
State | Published - 15 Oct 2001 |
Externally published | Yes |
Keywords
- Burn resistant titanium alloy
- Oxidation model
- Ti-V-Cr alloy
- Ti40 alloy