Cyclic fatigue-crack propagation in magnesia-partially-stabilized zirconia ceramics

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · American Ceramic Society Bulletin; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1990.tb05132.x· OSTI ID:6456386

Dauskardt, R H; Ritchie, R O ^[1]; Marshall, D B ^[2]

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1. Lawrence Berkeley Lab., Berkeley, CA (US)
2. Rockwell International Science Center, Thousand Oaks, CA (US)

The subcritical growth of fatigue cracks under (tension-tension) cyclic loading is demonstrated for ceramic materials, based on experiments using compact C(T) specimens of a MgO-partially-stabilized zirconia (PSZ). Under variable-amplitude cyclic loading, crack-growth rates show transient accelerations following low-high block overloads and transient retardations following high-low block overloads or single tensile overloads, again analogous to behavior commonly observed in ductile metals. Possible mechanisms for cyclic crack advance in ceramic materials are examined, and the practical implications of such ceramic fatigue are briefly discussed.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6456386
• Journal Information: American Ceramic Society Bulletin; (USA), Journal Name: American Ceramic Society Bulletin; (USA) Vol. 73:4; ISSN ACSBA; ISSN 0002-7812
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPACTS
CORROSION
CRACK PROPAGATION
DUCTILITY
FATIGUE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
STABILIZATION
STRESS CORROSION
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES