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Cyclic Strain Localization in Fatigued Metals
Abstract Strain localization in ductile metals subjected to cyclic deformation is a commonly observed feature which can be regarded as the first sign of fatigue damage. Cyclic strain localization can occur in different forms, e.g. in persistent slip band (PSBs), at notches at the free surface, at the tips of propagating cracks, at precipitate-free zones (PFZs), at grain boundaries or at pores at or just below the surface. In this paper, these forms of cyclic strain localization will be discussed with reference to their thresholds and the responsible microstructural mechanisms in terms of the slip modes in single- and multiphase mono- and polycrystals. In particular, the irreversible cyclic slip mechanisms responsible for the evolution of fatigue damage will be considered.
Cyclic Strain Localization in Fatigued Metals
Abstract Strain localization in ductile metals subjected to cyclic deformation is a commonly observed feature which can be regarded as the first sign of fatigue damage. Cyclic strain localization can occur in different forms, e.g. in persistent slip band (PSBs), at notches at the free surface, at the tips of propagating cracks, at precipitate-free zones (PFZs), at grain boundaries or at pores at or just below the surface. In this paper, these forms of cyclic strain localization will be discussed with reference to their thresholds and the responsible microstructural mechanisms in terms of the slip modes in single- and multiphase mono- and polycrystals. In particular, the irreversible cyclic slip mechanisms responsible for the evolution of fatigue damage will be considered.
Cyclic Strain Localization in Fatigued Metals
Mughrabi, Hael (author)
2001-01-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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