HIGH-TEMPERATURE COMPRESSION BEHAVIOR OF NEAR GAMMA-TITANIUM ALUMINIDES CONTAINING ADDITIONS OF CHROMIUM OR TUNGSTEN

Authors
BEDDOES J ZHAO L WALLACE W
Citation
J. Beddoes et al., HIGH-TEMPERATURE COMPRESSION BEHAVIOR OF NEAR GAMMA-TITANIUM ALUMINIDES CONTAINING ADDITIONS OF CHROMIUM OR TUNGSTEN, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 184(1), 1994, pp. 120000011-120000015
Citations number
22
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
184
Issue
1
Year of publication
1994
Pages
120000011 - 120000015
Database
ISI
SICI code
0921-5093(1994)184:1<120000011:HCBONG>2.0.ZU;2-X
Abstract
The isothermal constant-strain-rate compression behaviours between 900 and 1200-degrees-C and between 10(-1) and 10(-1) s-1 of near gamma-Ti Al alloys containing Cr or W are compared. At low strains the strain r ate sensitivity exponent of TiAl + Cr is higher than that for TiAl + W , but the latter exhibits less cracking after compression to about 0.7 5 true strain. This is related to the larger area fraction of beta pha se in TiAl + W, preventing coarsening of dynamically recrystallized gr ains during compression.