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A SUB‐SURFACE STRENGTHENING MODEL FOR A NON‐PROPAGATING FATIGUE CRACK IN MARTENSITIC–FERRITIC STEEL
Author(s) -
YANG C. Y.,
LIU H. W.
Publication year - 1979
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1979.tb01335.x
Subject(s) - materials science , martensite , ferrite (magnet) , crack closure , metallurgy , deformation (meteorology) , paris' law , crack growth resistance curve , composite material , fracture mechanics , microstructure
Microcrack growth in a ferrite grain in a two phase martensitic–ferritic steel was studied. A local deformation parameter, the unzipping crack increment, can be used to characterize crack tip deformation and crack growth rate. The microcrack growth behavior is interpreted in terms of the calculated unzipping crack increment.