Fatigue crack propagation in ceria-partially-stabilized zirconia (Ce-TZP)-alumina composites

Technical Report · Wed Oct 10 04:00:00 EDT 1990

OSTI ID:5809150

Tsai, J F; Yu, C S; Shetty, D K

Fatigue crack propagation rates in tension-tension load cycling were measured in ZrO{sub 2}-12 mol% CeO{sub 2}-10 wt% Al{sub 2}O{sub 3} ceramics using precracked and annealed compact tension specimens. The fatigue crack growth behavior was examined for Ce-TZPs. The fatigue crack growth behavior was strongly influenced by the history of crack shielding via the development of the crack-tip transformation zones. Crack growth rates under sustained peak loads were also measured and found to be significantly lower and occurred at higher peak stress intensities as compared to the fatigue crack growth rates.

• Research Organization: Utah Univ., Salt Lake City, UT (USA). Dept. of Materials Science and Engineering
• OSTI ID: 5809150
• Report Number(s): AD-A-230961/5/XAB; CNN: DAAL03-87-K-0060
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANNEALING
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
CRACK PROPAGATION
CRACKS
FATIGUE
HEAT TREATMENTS
MATERIALS
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SHIELDING
STRESSES