A. Gil et al., THE INFLUENCE OF COOLING RATE DURING ALLOY CASTING ON THE OXIDATION BEHAVIOR OF TIAL-BASED INTERMETALLICS, Journal of Materials Science, 28(21), 1993, pp. 5869-5874
The oxidation behaviour of the intermetallic phase Ti-50 at % Al at 90
0-degrees-C was studied. It was found that the oxidation behaviour str
ongly depends on the composition and distribution of the gamma and alp
ha2-phases in the alloy microstructure. As this microstructure strongl
y depends on the alloy cooling rate, the oxidation behaviour of TiAl-b
ased intermetallics is significantly affected by the casting procedure
and subsequent heat treatment. Rapid cooling from high temperature (
T greater-than-or-equal-to 1400-degrees-C) has a beneficial effect on
oxidation behaviour.