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Surface Finish Effects and the Strength‐Grain Size Relation in SiC
Author(s) -
CRANMER D. C.,
TRESSLER R. E.,
BRADT R. C.
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.tb14112.x
Subject(s) - machining , grain size , materials science , grit , surface finish , composite material , metallurgy , surface roughness , grain boundary strengthening , microstructure , grain boundary , psychology , developmental psychology
The effect of surface finish on the strength‐grain size relation was investigated for dense hot‐pressed SiC. Failure initiated predominantly via the propagation of extrinsic machining‐induced flaws for the range of grain sizes and machining grit sizes studied. These results are consistent with the region of large‐grain‐size flaw control as delineated by Prochazka and Charles. The severity of machining‐induced flaws, relative to the machining grit size, decreased with increasing machining grit size and decreasing SiC grain size.