Phase equilibria in TiAl alloys containing 10 and 20 at% Nb at 1473 K
- Tokyo Inst. of Tech. (Japan)
- National Research Inst. for Metals, Tokyo (Japan)
Alloys with compositions around Ti-24Al-11Nb in the Ti-Al-Nb ternary system have been studied quite extensively because they constitute the base compositions of the super [alpha]2 titanium aluminides. In contrast to the above alloys, the [gamma] titanium aluminides containing niobium at the same concentration level have attracted less attention until quite recently. An earlier study on phase equilibria suggested the existence of an isolated ternary T[sub 2] phase field at a composition region around 45Ti-45Al-10Nb at 1,473 K. A recent investigation casts doubt on the existence of the T[sub 2] phase as an equilibrium phase. In this study, the phase equilibria of alloys with compositions around Ti-45Al-10Nb and Ti-40Al-20Nb have been examined to establish a [gamma] TiAl part of the isothermal section of the Ti-Al-Nb ternary system at 1,473 K.
- OSTI ID:
- 6521949
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 28:8; ISSN 0956-716X; ISSN SCRMEX
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
CRYSTAL STRUCTURE
DATA
EXPERIMENTAL DATA
INFORMATION
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
NIOBIUM ALLOYS
NUMERICAL DATA
PHASE STUDIES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TERNARY ALLOY SYSTEMS
TITANIUM ALLOYS