The high temperature oxidation behaviour of Ti-47Al-2Cr-0.2Si and Ti-48Al-2Cr-2Nb compared with Ti-48Al-2Cr
The oxidation behaviour of Ti-47Al-2Cr-0.2Si and Ti-48Al-2Cr-2Nb (at.%), with a fine-grained near-gamma microstructure was studied at 700 and 800 C in comparison with Ti-48Al-2Cr. Isothermal and cyclic oxidation tests were performed either in humidified synthetic air or in static laboratory air. Ti-48Al-2Cr-2Nb showed the lowest oxidation rate and the highest spallation resistance. For Ti-47Al-2Cr-0.2Si a low isothermal oxidation rate, but pronounced susceptibility for oxide spallation was found. The niobium-free and silicon free alloy Ti-48Al-2Cr showed a high isothermal oxidation rate, however, spallation was between the 2 extremes represented by Ti-48Al-2Cr-2Nb and Ti-47Al-2Cr-0.2Si.
Bibliographic Reference: Article: Intermetallics (1997)
Record Number: 199710481 / Last updated on: 1997-05-09
Original language: en
Available languages: en