Premium
Toughening Mechanisms in Cemented Carbides
Author(s) -
Marshall David B.,
Morris Winfred L.,
Cox Brian N.,
Dadkhah Mahyar S.
Publication year - 1990
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.1151-2916.1990.tb06698.x
Subject(s) - materials science , toughening , fracture toughness , composite material , carbide , toughness , cemented carbide , fracture (geology) , electromagnetic shielding
Plastic zones much larger than previously expected have been observed around cracks in several cemented carbide materials. A preliminary estimate of the crack tip shielding due to the plastic zone in one material suggests that a substantial fraction of the fracture toughness may be due to the zone. Moreover, reduced zone sizes were observed in regions of rapid crack growth, implying that the dynamic fracture toughness may be smaller than the quasi‐static value.