Stable crack growth in polycrystalline magnesia under monotonic and cyclic loads

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb07253.x· OSTI ID:7236464

Ogawa, Takeshi ^[1]; Llorca, J ^[2]

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1. Gifu Univ. (Japan). Dept. of Mechanical Engineering
2. Polytechnic Univ. of Madrid (Spain). Dept. of Materials Science

The quasi-static, stable growth of cracks in polycrystalline magnesia under various loading conditions (cyclic compression, monotonic tension, and tension-compression fatigue) was studied. Crack length was monitored continuously through a conductive film attached to the specimen surface. The fracture surfaces and the crack path were examined by scanning electron microscopy. The different fracture mechanisms responsible for the observed stable crack growth in each loading conditions are discussed.

• OSTI ID: 7236464
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:4; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CRACK PROPAGATION
CRYSTALS
FRACTURE MECHANICS
GRAIN SIZE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MECHANICS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
POLYCRYSTALS
SIZE
STRESSES