THE INFLUENCE OF COOLING RATE DURING ALLOY CASTING ON THE OXIDATION BEHAVIOR OF TIAL-BASED INTERMETALLICS

Authors
GIL A WALLURA E GRUBMEIER H QUADAKKERS WJ
Citation
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
Citations number
9
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
28
Issue
21
Year of publication
1993
Pages
5869 - 5874
Database
ISI
SICI code
0022-2461(1993)28:21<5869:TIOCRD>2.0.ZU;2-Z
Abstract
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.