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Deformation of Alumina/Titanium Carbide Composite at Elevated Temperatures
Author(s) -
Nagano Takayuki,
Kato Hidezumi,
Wakai Fumihiro
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb08293.x
Subject(s) - materials science , composite number , composite material , deformation (meteorology) , titanium carbide , tension (geology) , strain rate , activation energy , cavitation , atmospheric temperature range , elongation , stress (linguistics) , compression (physics) , titanium , crosshead , carbide , metallurgy , ultimate tensile strength , thermodynamics , chemistry , flexural strength , organic chemistry , physics , linguistics , philosophy
The deformation behavior of an Al 2 O 3 /30 wt% TIC composite in uniaxial tension was evaluated under vacuum over the temperature range of 1300° to 1550°C. The Al 2 0 3 /TiC composite exhibited the maximum elongation of 66% at an initial strain rate of 1.19 X l0 ‐4 s ‐1 at 1550°C. The stress exponent calculated from peak stresses of true stress‐true strain curves at 1500 O C was 3.8, which was in good agreement with that obtained by changing the crosshead speed during the tension test. The apparent activation energy at 20 MPa was 853 kJ/mol. In addition the deformation of the Al 2 O 3 /TiC composite in uniaxial tension at elevated temperature was accompanied by cavitation.