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CYCLIC PLASTICITY IN TYPE 316L AUSTENITIC STAINLESS STEEL
Author(s) -
POLÁK J.,
OBRTLÍK K.,
HÁJEK M.
Publication year - 1994
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.1460-2695.1994.tb00808.x
Subject(s) - materials science , plasticity , amplitude , cyclic stress , hardening (computing) , plateau (mathematics) , austenite , composite material , austenitic stainless steel , softening , lüders band , strain (injury) , dislocation , metallurgy , mathematics , microstructure , mathematical analysis , optics , physics , medicine , corrosion , layer (electronics)
— The cyclic stress‐strain response of two heats of austenitic stainless steel 3 16L was experimentally studied under a wide range of cyclic plastic strain amplitudes. Three domains on the cyclic stress‐ strain curve were found. In the middle domain the plateau behaviour corresponds to fatigue softening. The domain at low plastic strain amplitudes is characterized by stabilized behaviour and the domain of the highest plastic strain amplitudes by continuous hardening. Individual domains were correlated with observed dislocation structures. The existence of the plateau can be related to the localization of the cyclic strain into persistent slip bands. A Manson‐Coffin plot of the material over a wide cyclic amplitude range is curved and can be approximated by a double logarithmic dependence.