Thermo-mechanical processing (TMP) of Ti-48Al-2Nb-2Cr based alloys

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:225130

Fuchs, G E ^[1]

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1. KAPL, Inc., Schenectady, NY (United States)

The effects of heat treatment and deformation processing on the microstructures and properties of {gamma}-TiAl based alloys produced by ingot metallurgy (I/M) and powder metallurgy (P/M) techniques were examined. The alloy selected for this work is the second generation {gamma}-TiAl based alloy -- Ti-48Al-2Nb-2Cr (at %). Homogenization of I/M samples was performed at a variety of temperatures, followed by hot working by isothermal forging. P/M samples were prepared from gas atomized powders, consolidated by both HIP and extrusion and some of the HIPed material was then hot worked by isothermal forging. The effects of processing, heat treatment and hot working on the microstructures and properties will be discussed.

• OSTI ID: 225130
• Report Number(s): CONF-950201--; ISBN 0-87339-304-X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CASTING
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CREEP
EXTRUSION
FORGING
GRAIN SIZE
HOT PRESSING
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
NIOBIUM ALLOYS
OPTICAL MICROSCOPY
POWDERS
SCANNING ELECTRON MICROSCOPY
STRAIN RATE
TENSILE PROPERTIES
THERMOMECHANICAL TREATMENTS
TITANIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY