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NEAR THRESHOLD FATIGUE CRACK PROPAGATION BEHAVIOUR OF A HETEROGENEOUS MICROSTRUCTURE
Author(s) -
Vaidya W. V.
Publication year - 1986
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.1460-2695.1986.tb00455.x
Subject(s) - microstructure , materials science , composite material , metallurgy
The threshold regime of a heterogeneous, pearlitic‐ferritic microstructure was investigated at R = 0.1. Not only did the Δ K th values vary depending on the test procedure in that d a /d N vs Δ K curves before and after Δ K th determination were not identical but transition Δ K values also differed. The observations are correlated with inherent micro‐ structural features.