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Material characterization and finite element modelling of cyclic plasticity behavior for 304 stainless steel using a crystal plasticity model

Lu, Jiawa; Sun, Wei; Becker, Adib A.

Material characterization and finite element modelling of cyclic plasticity behavior for 304 stainless steel using a crystal plasticity model Thumbnail


Authors

Jiawa Lu

Wei Sun

Adib A. Becker



Abstract

Low cycle fatigue tests were carried out for a 304 stainless steel at room temperature. A series of experimental characterisations, including SEM, TEM, and XRD were conducted for the 304 stainless steel to facilitate the understanding of the mechanical responses and microstructural behaviour of the material under cyclic loading including nanostructure, crystal structure and the fractured surface. The crystal plasticity finite element method (CPFEM) is a powerful tool for studying the microstructure influence on the cyclic plasticity behaviour. This method was incorporated into the commercially available software ABAQUS by coding a UMAT user subroutine. Based on the results of fatigue tests and material characterisation, the full set of material constants for the crystal plasticity model was determined. The CPFEM framework used in this paper can be used to predict the crack initiation sites based on the local accumulated plastic deformation and local plastic dissipation energy criterion, but with limitation in predicting the crack initiation caused by precipitates.

Journal Article Type Article
Acceptance Date Nov 17, 2015
Online Publication Date Dec 2, 2015
Publication Date Jan 1, 2016
Deposit Date Jul 20, 2016
Publicly Available Date Jul 20, 2016
Journal International Journal of Mechanical Sciences
Print ISSN 0020-7403
Electronic ISSN 0020-7403
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 105
DOI https://doi.org/10.1016/j.ijmecsci.2015.11.024
Keywords Material characterisation; Cyclic plasticity; Crystal plasticity; Finite element method; 304 stainless steel
Public URL https://nottingham-repository.worktribe.com/output/978979
Publisher URL http://www.sciencedirect.com/science/article/pii/S0020740315004014

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