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IN SITU SCANNING ELECTRON MICROSCOPE OBSERVATIONS OF FATIGUE IN MAGNESIA‐PARTIALLY‐STABILIZED ZIRCONIA
Author(s) -
Møller C. V.,
Healy J. C.,
Mai Y.W.
Publication year - 1994
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1994.tb00230.x
Subject(s) - scanning electron microscope , materials science , cubic zirconia , deflection (physics) , paris' law , composite material , crack closure , bridging (networking) , microscope , electron microscope , structural engineering , fracture mechanics , optics , ceramic , engineering , computer science , computer network , physics
— The response of magnesia‐partially‐stabilized zirconia to cyclic loading was investigated using a purpose‐built loading stage, designed to operate in the vacuum chamber of a scanning electron microscope. Crack tip/microstructural interactions, along with fatigue crack growth rates were studied and recorded photographically and via a video cassette recorder. For the experimental conditions examined, crack bridging, deflection and closure are discussed as possible mechanisms of fatigue crack growth resistance.