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REVIEW—Transformation Toughening in Ceramics: Martensitic Transformations in Crack‐Tip Stress Fields
Author(s) -
EVANS A. G.,
HEUER A. H.
Publication year - 1980
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.1151-2916.1980.tb10712.x
Subject(s) - toughening , materials science , diffusionless transformation , ceramic , toughness , fracture toughness , martensite , composite material , transformation (genetics) , stress field , stress (linguistics) , microstructure , structural engineering , finite element method , biochemistry , chemistry , linguistics , philosophy , gene , engineering
The toughness of ceramics can be substantially enhanced by inducing a martensitic transformation in the stress field of the dominant crack. The specific characteristics of martensitic transformations pertinent to this toughening process are examined in this paper. A generalized model of the toughening is developed, which indicates the specific roles of the transformation parameters on the expected magnitude of the toughening. Finally, the implications of the analysis for the development of high‐toughness ceramics are discussed.