A dislocation-based model for low-amplitude fatigue behaviour of face-centred cubic single crystals

A dislocation-based model intended to predict mechanical behaviour for low-amplitude fatigue loading is presented. It is based on a physical representation of the dislocation microstructure according to a statistical distribution of dislocation dipoles acting as efficient obstacles to plastic slip....

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Bibliographic Details
Published in:Scripta materialia 2008-06, Vol.58 (12), p.1086-1089
Main Authors: Déprés, C., Fivel, M., Tabourot, L.
Format: Article
Language:English
Subjects:
Cycles
Dislocation dynamics
Dislocations
Fatigue (materials)
High-cycle fatigue
Hysteresis loops
Mathematical analysis
Mathematical models
Micromechanical modeling
Representations
Statistical distributions
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Summary:A dislocation-based model intended to predict mechanical behaviour for low-amplitude fatigue loading is presented. It is based on a physical representation of the dislocation microstructure according to a statistical distribution of dislocation dipoles acting as efficient obstacles to plastic slip. This leads to a reduced set of equations that accurately predict the development of hysteresis loops during cycling.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2008.02.027