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Strengthening of Zirconia–Alumina During Cyclic Fatigue Testing
Author(s) -
Grathwohl Georg,
Liu Tianshun
Publication year - 1989
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.1151-2916.1989.tb06015.x
Subject(s) - materials science , cyclic stress , cubic zirconia , residual stress , ceramic , composite material , fatigue testing , fatigue limit , phase (matter) , chemistry , organic chemistry
Recent fatigue results of advanced ceramics are reviewed. It is pointed out that current statements of fatigue properties often relate to specimens with long artificial cracks; in this study, a Y‐ZrO 2 +Al 2 O 3 ceramic is tested under cyclic stresses using specimens with natural flaws. Cyclic fatigue is restricted to a narrow range of stresses near the ultimate strength. Survivor specimens reveal increased residual strength, possibly resulting from a higher ZrO 2 phase transformation encouraged by long‐term cyclic stresses.