Alloy modification of [gamma]TiAl for improved mechanical properties
- ABB Power Generation Ltd., Baden (Switzerland). Dept. of Materials Technology
The [gamma]TiAl is a candidate material for high temperature structural applications in gas turbine engines. The binary alloy of 48% at aluminum does not possess the adequate properties, hence, major efforts have been made in alloy modifications to improve the mechanical properties, resulting in the development of several engineering alloys such as Ti-48Al-2Mn-2Nb. The Mn addition has been employed to improve the low temperature ductility and the Nb addition for improving the oxidation behavior. The addition of Si has been reported to improve the oxidation resistance as well as the creep strength of [gamma]TiAl alloys. The aim of this paper is to report on the effects of a Si addition on the microstructures, the tensile and creep properties of the alloy Ti-48Al-2Mn-2Nb.
- OSTI ID:
- 7104685
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:7; ISSN 0956-716X; ISSN SCRMEX
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CREEP
ELEMENTS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
NIOBIUM ALLOYS
SEMIMETALS
SILICON
TENSILE PROPERTIES
TITANIUM ALLOYS