Journal
CORROSION SCIENCE
Volume 194, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109957
Keywords
combustion behavior; titanium alloys; ignition temperature; burning velocity; phase structure
Funding
- National Natural Science Foundation for Distinguished Young Scholars of China [51925401]
- Fundamental Research Funds for the Central Universities [FRF-IDRY-19-012]
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A distinctive combustion phenomenon is revealed in promoted ignition combustion tests of Ti-25V-15Cr and Ti-6Al-4V alloys, where the relationship between ignition temperatures and oxygen pressures follows the Van't Hoff equation due to the decomposition and volatilization of V2O5. Additionally, the burning velocity of the alloys is influenced by the phase structure of the matrix.
A distinctive combustion phenomenon is revealed by promoted ignition combustion tests of Ti-25V-15Cr and Ti-6Al-4V alloys. The relationship between ignition temperatures and oxygen pressures obeys the Van't Hoff equation. The ignition temperatures of Ti-25V-15Cr are higher than that of Ti-6Al-4V due to the decomposition and volatilization of V2O5. However, the burning velocity of Ti-25V-15Cr is faster than that of Ti-6Al-4V, attributed to the different migration way of solid-liquid interface. The phase structure of the matrix is considered as the key factor that controls the spreading rate of the solid-liquid interface and the burning velocities of Ti-25V-15Cr and Ti-6Al-4V alloys.
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