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High‐Temperature Mechanical Properties of Mullite Under Compression
Author(s) -
DOKKO P. C.,
PASK JOSEPH A.,
MAZDIYASNI K. S.
Publication year - 1977
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.1151-2916.1977.tb15492.x
Subject(s) - mullite , materials science , grain boundary sliding , composite material , intergranular corrosion , deformation (meteorology) , grain boundary , creep , cavitation , crystallite , stress (linguistics) , dislocation , compression (physics) , deformation mechanism , metallurgy , microstructure , thermodynamics , ceramic , linguistics , physics , philosophy
The high strength potential of single‐phase mullite was investigated under compressive stress‐strain and creep testing conditions at 1400° and 1500°C. In single‐crystal experiments, no plastic deformation and, hence, no dislocation glide was observed. Polycrystalline mullite was deformed via the Nabarro‐Herring mechanism accompanied by grain‐boundary sliding and some cavitation. In stress‐strain tests, deformation was enhanced by intergranular separation.